1
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Rojas-Buzo S, Salusso D, Le THT, Ortuño MA, Lomachenko KA, Bordiga S. Unveiling the Role and Stabilization Mechanism of Cu + into Defective Ce-MOF Clusters during CO Oxidation. J Phys Chem Lett 2024; 15:3962-3967. [PMID: 38569092 PMCID: PMC11017307 DOI: 10.1021/acs.jpclett.4c00324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/21/2024] [Accepted: 03/29/2024] [Indexed: 04/05/2024]
Abstract
Copper single-site catalysts supported on Zr-based metal-organic frameworks (MOFs) are well-known systems in which the nature of the active sites has been deeply investigated. Conversely, the redox chemistry of the Ce-counterparts is more limited, because of the often-unclear Cu2+/Cu+ and Ce4+/Ce3+ pairs behavior. Herein, we studied a novel Cu2+ single-site catalyst supported on a defective Ce-MOF, Cu/UiO-67(Ce), as a catalyst for the CO oxidation reaction. Based on a combination of in situ DRIFT and operando XAS spectroscopies, we established that Cu+ sites generated during catalysis play a pivotal role. Moreover, the oxygen vacancies associated with Ce3+ sites and presented in the defective Cu/UiO-67(Ce) material are able to activate the O2 molecules, closing the catalytic cycle. The results presented in this work open a new route for the design of active and stable single-site catalysts supported on defective Ce-MOFs.
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Affiliation(s)
- Sergio Rojas-Buzo
- Instituto
de Tecnología Química, Universitat
Politècnica de València - Consejo Superior de Investigaciones
Científicas, Av. de los Naranjos, s/n, 46022 Valencia, Spain
| | - Davide Salusso
- European
Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble Cedex 9, France
| | - Thanh-Hiep Thi Le
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CIQUS), University
of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Manuel A. Ortuño
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CIQUS), University
of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Kirill A. Lomachenko
- European
Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble Cedex 9, France
| | - Silvia Bordiga
- Department
of Chemistry and NIS Centre, University
of Turin, Via Giuria
7, 10125 Turin, Italy
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2
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Nifant'ev I, Komarov P, Sadrtdinova G, Safronov V, Kolosov N, Ivchenko P. Mechanistic Insights of Ethylene Polymerization on Phillips Chromium Catalysts. Polymers (Basel) 2024; 16:681. [PMID: 38475365 DOI: 10.3390/polym16050681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Silica-supported chromium oxide catalysts, also named Phillips chromium catalysts (PCCs), provide more than half of the world's production of high- and medium-density polyethylenes. PCCs are usually prepared in the Cr(VI)/SiO2 form, which is subjected to reductive activation. It has been explicitly proven that CO reduces Cr(VI) to Cr(II) species that initiate ethylene polymerization; ethylene activates Cr(VI) sites as well, but the nature of the catalytic species is complicated by the presence of the ethylene oxidation products. It is widely accepted that the catalytic species are of a Cr(III)-alkyl nature, but this common assumption faces the challenge of "extra" hydrogen: the formation of similar species under the action of even-electron reducing agents requires an additional H atom. Relatively recently, it was found that saturated hydrocarbons can also activate CrOx/SiO2, and alkyl fragments turn out to be bonded with a polyethylene chain. In recent years, there have been numerous experimental and theoretical studies of the structure and chemistry of PCCs at the different stages of preparation and activation. The use of modern spectral methods (such as extended X-ray absorption fine structure (EXAFS), X-ray absorption near-edge structure (XANES), and others); operando IR, UV-vis, EPR, and XAS spectroscopies; and theoretical approaches (DFT modeling, machine learning) clarified many essential aspects of the mechanisms of CrOx/SiO2 activation and catalytic behavior. Overall, the Cosse-Arlman mechanism of polymerization on Cr(III)-alkyl centers is confirmed in many works, but its theoretical support required the development of nontrivial and contentious mechanistic concepts of Cr(VI)/SiO2 or Cr(II)/SiO2 activation. On the other hand, conflicting experimental data continue to be obtained, and certain mechanistic concepts are being developed with the use of outdated models. Strictly speaking, the main question of what type of catalytic species, Cr(II), Cr(III), or Cr(IV), comes into polymerization still has not received an unambiguous answer. The role of the chemical nature of the support-through the prism of the nature, geometry, and distribution of the active sites-is also not clear in depth. In the present review, we endeavored to summarize and discuss the recent studies in the field of the preparation, activation, and action of PCCs, with a focus on existing contradictions in the interpretation of the experimental and theoretical results.
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Affiliation(s)
- Ilya Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
- Department of Chemistry, M.V. Lomonosov Moscow University, 1-3 Leninskie Gory, 119991 Moscow, Russia
| | - Pavel Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
| | - Guzelia Sadrtdinova
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
- Faculty of Chemistry, National Research University Higher School of Economics, Myasnitskaya St. 20, 101100 Moscow, Russia
| | | | | | - Pavel Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
- Department of Chemistry, M.V. Lomonosov Moscow University, 1-3 Leninskie Gory, 119991 Moscow, Russia
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3
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Tian Y, Xu W, Cong W, Bi X, He J, Song Z, Guan H, Huang C, Wang X. Research progress on the catalytic and thermal decomposition of ammonium dinitramide (ADN). RSC Adv 2024; 14:3636-3646. [PMID: 38268549 PMCID: PMC10804229 DOI: 10.1039/d3ra08053f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/10/2024] [Indexed: 01/26/2024] Open
Abstract
Ammonium dinitramide (NH4N(NO3)2, ADN) is regarded as a promising oxidizer due to its low signature and high specific impulse. Generally, ADN undergoes exothermic decomposition above 140 °C accompanied by the byproduct of ammonium nitrate (AN). The inevitable endothermic decomposition of AN decreases the overall heat release, and so there is a need to develop efficient catalysts to guide ADN decomposition along desired pathways with a lower decomposition temperature and higher heat release. A suitable catalyst should be able to withstand the harsh conditions in a thruster to achieve a stable thrust force, which poses a huge obstacle for manufacturing a stable and active catalyst. This review gives a comprehensive summary of the thermal and catalytic decomposition pathways of ADN for the first time, which is expected to deepen the understanding of its reaction mechanism and provide useful guidance for designing prospective catalysts toward efficient ADN decomposition.
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Affiliation(s)
- Yubo Tian
- School of Chemical Engineering, Zhengzhou University Zhengzhou 450001 P. R. China
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
| | - Weibin Xu
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
- School of Chemical Engineering, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Weimin Cong
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
| | - Xueqian Bi
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
- College of Environmental Science and Engineering, Dalian Maritime University Dalian 116026 P. R. China
| | - Jiahui He
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
- School of Chemical Engineering, Northwest University Xi'an 710069 P. R. China
| | - Zhe Song
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
- School of Chemical Engineering, Northwest University Xi'an 710069 P. R. China
| | - Hongling Guan
- School of Chemical Engineering, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Chuande Huang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
| | - Xiaodong Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS) Dalian 116023 P. R. China
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4
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Nifant’ev IE, Komarov PD, Kostomarova OD, Kolosov NA, Ivchenko PV. MAO- and Borate-Free Activating Supports for Group 4 Metallocene and Post-Metallocene Catalysts of α-Olefin Polymerization and Oligomerization. Polymers (Basel) 2023; 15:3095. [PMID: 37514483 PMCID: PMC10384419 DOI: 10.3390/polym15143095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Modern industry of advanced polyolefins extensively uses Group 4 metallocene and post-metallocene catalysts. High-throughput polyolefin technologies demand the use of heterogeneous catalysts with a given particle size and morphology, high thermal stability, and controlled productivity. Conventional Group 4 metal single-site heterogeneous catalysts require the use of high-cost methylalumoxane (MAO) or perfluoroaryl borate activators. However, a number of inorganic phases, containing highly acidic Lewis and Brønsted sites, are able to activate Group 4 metal pre-catalysts using low-cost and affordable alkylaluminums. In the present review, we gathered comprehensive information on MAO- and borate-free activating supports of different types and discussed the surface nature and chemistry of these phases, examples of their use in the polymerization of ethylene and α-olefins, and prospects of the further development for applications in the polyolefin industry.
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Affiliation(s)
- Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
| | | | - Nikolay A. Kolosov
- NIOST LLC, Kuzovlevsky Tr. 2-270, 634067 Tomsk, Russia; (O.D.K.); (N.A.K.)
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
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5
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Mohanan S, Guan X, Liang M, Karakoti A, Vinu A. Stimuli-Responsive Silica Silanol Conjugates: Strategic Nanoarchitectonics in Targeted Drug Delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301113. [PMID: 36967548 DOI: 10.1002/smll.202301113] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The design of novel drug delivery systems is exceptionally critical in disease treatments. Among the existing drug delivery systems, mesoporous silica nanoparticles (MSNs) have shown profuse promise owing to their structural stability, tunable morphologies/sizes, and ability to load different payload chemistry. Significantly, the presence of surface silanol groups enables functionalization with relevant drugs, imaging, and targeting agents, promoting their utility and popularity among researchers. Stimuli-responsive silanol conjugates have been developed as a novel, more effective way to conjugate, deliver, and release therapeutic drugs on demand and precisely to the selected location. Therefore, it is urgent to summarize the current understanding and the surface silanols' role in making MSN a versatile drug delivery platform. This review provides an analytical understanding of the surface silanols, chemistry, identification methods, and their property-performance correlation. The chemistry involved in converting surface silanols to a stimuli-responsive silica delivery system by endogenous/exogenous stimuli, including pH, redox potential, temperature, and hypoxia, is discussed in depth. Different chemistries for converting surface silanols to stimuli-responsive bonds are discussed in the context of drug delivery. The critical discussion is culminated by outlining the challenges in identifying silanols' role and overcoming the limitations in synthesizing stimuli-responsive mesoporous silica-based drug delivery systems.
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Affiliation(s)
- Shan Mohanan
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Mingtao Liang
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, The University of Newcastle, Callaghan, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
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6
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Lombard CJ, van Sittert CGCE, Mugo JN, Perry C, Willock DJ. Computational investigation of α-SiO 2 surfaces as a support for Pd. Phys Chem Chem Phys 2023; 25:6121-6130. [PMID: 36752082 DOI: 10.1039/d2cp04722e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The properties of a supported metal catalyst depend crucially on the interaction between the active metal and the support. A case in point is Pd supported on silica, Pd/SiO2, which is widely used in oxidation catalysis. There is a need for a broad range of computational models that describe the interaction of Pd with silica surfaces so that active site models can be proposed and tested. In this work, we create well-defined, reproducible, periodic models of SiO2 surfaces and investigate their interaction with Pd using dispersion-corrected DFT. We use crystalline α-SiO2 as a useful starting point for creating and estimating the adsorption properties of metals on SiO2 surfaces, which can represent the specific isolated functional groups present on more complex amorphous silica surfaces. We have modelled α-SiO2 (001), (100) and (101) surfaces containing isolated siloxane and silanol functional groups and estimated their affinity towards the adsorption of Pd atoms regarding an isolated gaseous Pd atom and the fcc Pd solid. This provides additional information on the ease with which Pd can be dispersed on the surfaces in question. From our model, we characterise the surface energies of the α-SiO2 (hkl) surfaces and calculate the geometries of the Pd1/α-SiO2 (hkl) adsorption site on each surface. We estimate that Pd1(g) will prefer to adsorb close to strained four-membered siloxane rings or on a vicinal silanol group of α-SiO2 (101).
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Affiliation(s)
- C J Lombard
- Laboratory for Applied Molecular Modelling, Research Focus Area: Chemical Resource Beneficiation, North-West University, Private Bag X6001, Potchefstroom, 252, South Africa.
| | - C G C E van Sittert
- Laboratory for Applied Molecular Modelling, Research Focus Area: Chemical Resource Beneficiation, North-West University, Private Bag X6001, Potchefstroom, 252, South Africa.
| | - J N Mugo
- Johnson Matthey Technology Center, Belasis Avenue, Billingham TS23 1LH, UK
| | - C Perry
- Johnson Matthey Technology Center, Blount's Court, Sonning Common, Reading RG4 9NH, UK
| | - D J Willock
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
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7
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Jing W, Shen H, Qin R, Wu Q, Liu K, Zheng N. Surface and Interface Coordination Chemistry Learned from Model Heterogeneous Metal Nanocatalysts: From Atomically Dispersed Catalysts to Atomically Precise Clusters. Chem Rev 2022; 123:5948-6002. [PMID: 36574336 DOI: 10.1021/acs.chemrev.2c00569] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The surface and interface coordination structures of heterogeneous metal catalysts are crucial to their catalytic performance. However, the complicated surface and interface structures of heterogeneous catalysts make it challenging to identify the molecular-level structure of their active sites and thus precisely control their performance. To address this challenge, atomically dispersed metal catalysts (ADMCs) and ligand-protected atomically precise metal clusters (APMCs) have been emerging as two important classes of model heterogeneous catalysts in recent years, helping to build bridge between homogeneous and heterogeneous catalysis. This review illustrates how the surface and interface coordination chemistry of these two types of model catalysts determines the catalytic performance from multiple dimensions. The section of ADMCs starts with the local coordination structure of metal sites at the metal-support interface, and then focuses on the effects of coordinating atoms, including their basicity and hardness/softness. Studies are also summarized to discuss the cooperativity achieved by dual metal sites and remote effects. In the section of APMCs, the roles of surface ligands and supports in determining the catalytic activity, selectivity, and stability of APMCs are illustrated. Finally, some personal perspectives on the further development of surface coordination and interface chemistry for model heterogeneous metal catalysts are presented.
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Affiliation(s)
- Wentong Jing
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hui Shen
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ruixuan Qin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qingyuan Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
| | - Kunlong Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
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8
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Surface Organometallic Chemistry for Single-site Catalysis and Single-atom Catalysis. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2211-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Li LY, Wang ZY, Yang SY, Chen JG, He ZH, Wang K, Luo QX, Liu ZW, Liu ZT. Understanding the Role of Fe Doping in Tuning the Size and Dispersion of GaN Nanocrystallites for CO 2-Assisted Oxidative Dehydrogenation of Propane. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Long-Yao Li
- Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Zhong-Yu Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
| | - Shao-Yan Yang
- Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Jian-Gang Chen
- Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Zhen-Hong He
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
| | - Kuan Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
| | - Qun-Xing Luo
- International Science & Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, School of Chemical Engineering, Northwest University, Xi’an 710069, China
| | - Zhong-Wen Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Zhao-Tie Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
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10
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Zaera F. Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? Chem Rev 2022; 122:8594-8757. [PMID: 35240777 DOI: 10.1021/acs.chemrev.1c00905] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A critical review of different prominent nanotechnologies adapted to catalysis is provided, with focus on how they contribute to the improvement of selectivity in heterogeneous catalysis. Ways to modify catalytic sites range from the use of the reversible or irreversible adsorption of molecular modifiers to the immobilization or tethering of homogeneous catalysts and the development of well-defined catalytic sites on solid surfaces. The latter covers methods for the dispersion of single-atom sites within solid supports as well as the use of complex nanostructures, and it includes the post-modification of materials via processes such as silylation and atomic layer deposition. All these methodologies exhibit both advantages and limitations, but all offer new avenues for the design of catalysts for specific applications. Because of the high cost of most nanotechnologies and the fact that the resulting materials may exhibit limited thermal or chemical stability, they may be best aimed at improving the selective synthesis of high value-added chemicals, to be incorporated in organic synthesis schemes, but other applications are being explored as well to address problems in energy production, for instance, and to design greener chemical processes. The details of each of these approaches are discussed, and representative examples are provided. We conclude with some general remarks on the future of this field.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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11
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Rodriguez-Olguin MA, Cruz-Herbert RN, Atia H, Bosco M, Fornero EL, Eckelt R, De Haro Del Río DA, Aguirre A, Gardeniers JGE, Susarrey-Arce A. Tuning the catalytic acidity in Al 2O 3 nanofibers with mordenite nanocrystals for dehydration reactions. Catal Sci Technol 2022; 12:4243-4254. [PMID: 35873718 PMCID: PMC9252259 DOI: 10.1039/d2cy00143h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/10/2022] [Indexed: 11/21/2022]
Abstract
The chemical and structural properties of Al2O3 are tuned for dehydration reactions. The synergy between the structured Al2O3 shaped as nanofiber and the acid site nature of the zeolite mordenite in the nanofiber improves the dehydration reaction.
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Affiliation(s)
- M. A. Rodriguez-Olguin
- Mesoscale Chemical Systems, MESA+ Institute, University of Twente, PO. Box 217, 7500AE, Enschede, The Netherlands
| | - R. N. Cruz-Herbert
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba S/N, San Nicolás de los Garza, Nuevo León, 64455, Mexico
| | - H. Atia
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, D-18059, Rostock, Germany
| | - M. Bosco
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral, CONICET, Güemes 3450, S3000GLN, Santa Fe, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL), Santiago del Estero 2829, Santa Fe, 3000, Argentina
| | - E. L. Fornero
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral, CONICET, Güemes 3450, S3000GLN, Santa Fe, Argentina
- Facultad de Ingeniería en Ciencias Hídricas, UNL, Ciudad Universitaria, Ruta Nacional N° 168 – Km 472,4, 3000 Santa Fe, Argentina
| | - R. Eckelt
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, D-18059, Rostock, Germany
| | - D. A. De Haro Del Río
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba S/N, San Nicolás de los Garza, Nuevo León, 64455, Mexico
| | - A. Aguirre
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral, CONICET, Güemes 3450, S3000GLN, Santa Fe, Argentina
| | - J. G. E. Gardeniers
- Mesoscale Chemical Systems, MESA+ Institute, University of Twente, PO. Box 217, 7500AE, Enschede, The Netherlands
| | - A. Susarrey-Arce
- Mesoscale Chemical Systems, MESA+ Institute, University of Twente, PO. Box 217, 7500AE, Enschede, The Netherlands
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12
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Huang M, Yasumura S, Li L, Toyao T, Maeno Z, Shimizu KI. High-loading Ga-exchanged MFI zeolites as selective and coke-resistant catalysts for nonoxidative ethane dehydrogenation. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01799c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A high-loading Ga-exchanged MFI zeolite was developed for efficient ethane dehydrogenation. Its high catalytic performance is ascribed to both the low amount of Brønsted acid sites and the major formation of [GaH2]+ ions among isolated Ga hydrides.
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Affiliation(s)
- Mengwen Huang
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Shunsaku Yasumura
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Lingcong Li
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto, 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto, 615-8520, Japan
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13
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Rodriguez-Olguin M, Atia H, Bosco M, Aguirre A, Eckelt R, Asuquo E, Vandichel M, Gardeniers J, Susarrey-Arce A. Al2O3 nanofibers prepared from aluminum Di(sec-butoxide)acetoacetic ester chelate exhibits high surface area and acidity. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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14
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Kubota H, Mine S, Toyao T, Maeno Z, Shimizu KI. Redox-Driven Reversible Structural Evolution of Isolated Silver Atoms Anchored to Specific Sites on γ-Al2O3. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroe Kubota
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Shinya Mine
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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15
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16
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Chen L, Qi Z, Peng X, Chen JL, Pao CW, Zhang X, Dun C, Young M, Prendergast D, Urban JJ, Guo J, Somorjai GA, Su J. Insights into the Mechanism of Methanol Steam Reforming Tandem Reaction over CeO 2 Supported Single-Site Catalysts. J Am Chem Soc 2021; 143:12074-12081. [PMID: 34328729 DOI: 10.1021/jacs.1c03895] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrated how the special synergy between a noble metal single site and neighboring oxygen vacancies provides an "ensemble reaction pool" for high hydrogen generation efficiency and carbon dioxide (CO2) selectivity of a tandem reaction: methanol steam reforming. Specifically, the hydrogen generation rate over single site Ru1/CeO2 catalyst is up to 9360 mol H2 per mol Ru per hour (579 mLH2 gRu-1 s-1) with 99.5% CO2 selectivity. Reaction mechanism study showed that the integration of metal single site and O vacancies facilitated the tandem reaction, which consisted of methanol dehydrogenation, water dissociation, and the subsequent water gas shift (WGS) reaction. In addition, the strength of CO adsorption and the reaction activation energy difference between methanol dehydrogenation and WGS reaction play an important role in determining the activity and CO2 selectivity. Our study paves the way for the further rational design of single site catalysts at the atomic scale. Furthermore, the development of such highly efficient and selective hydrogen evolution systems promises to deliver highly desirable economic and ecological benefits.
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Affiliation(s)
- Luning Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | | | | | - Jeng-Lung Chen
- National Synchrotron Radiation Research Center, Science-Based Industrial Park Hsinchu 30076, Taiwan
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Center, Science-Based Industrial Park Hsinchu 30076, Taiwan
| | - Xibo Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | | | - Melissa Young
- Department of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
| | | | | | | | - Gabor A Somorjai
- Department of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
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17
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen-Bonding-Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021; 60:17446-17451. [PMID: 34036725 DOI: 10.1002/anie.202106682] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/23/2021] [Indexed: 02/04/2023]
Abstract
The practical synthesis of polar-functionalized polyolefins using transition-metal-catalyzed copolymerization of olefins with polar monomers is a challenge; the use of heterogeneous catalysts is little explored. Herein, we report the synthesis of heterogeneous naphthoquinone-based nickel (Ni/SiO2 ) and palladium (Pd/SiO2 ) catalysts through hydrogen bonding interactions of the ligands with the silica surface. Ni/SiO2 exhibits high activities (up to 2.65×106 g mol-1 h-1 ) during the copolymerization of ethylene with 5-hexene-1-yl-acetate, affording high-molecular-weight (Mn up to 630 000) polar-functionalized semicrystalline polyethylene (comonomer incorporation up to 2.8 mol %), along with great morphology control. The resulting copolymers possess improved surface properties and great mechanical properties. Pd/SiO2 can mediate ethylene copolymerization with polar monomers with moderate activity to produce high-molecular-weight copolymers with tunable comonomer incorporation.
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Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
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18
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen‐Bonding‐Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
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19
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Sun X, Xue J, Ren Y, Li X, Zhou L, Li B, Zhao Z. Revealing nature of active site and reaction mechanism of supported chromium oxide catalyst in propane direct dehydrogenation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111520] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Gonçalves AAS, Ciesielczyk F, Samojeden B, Jaroniec M. Toward development of single-atom ceramic catalysts for selective catalytic reduction of NO with NH 3. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123413. [PMID: 32763703 DOI: 10.1016/j.jhazmat.2020.123413] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/21/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Insertion of transition metal species into crystalline alumina at low temperatures is proposed to achieve the dispersion of these species at atomic level paired with exceptional textural properties. Precisely, MeAl2O4/γ-Al2O3 (Me = Mn, Fe, Co, Ni, and/or Cu) nanostructured ceramic catalysts were fabricated with ultra large mesopores (16-30 nm), and high specific surface area (180-290 m2 g-1) and pore volume (1.1-1.6 cm3 g-1). These ceramics were applied as efficient catalysts for the selective catalytic reduction (SCR) of NO with NH3, and their selectivity was discussed in terms of N2O formation, an undesirable byproduct. The catalysts containing Fe, Cu, or Mn showed the highest activities, however, within different temperature ranges. Further tuning of the catalytic activity and selectivity was achieved by creating ceramic catalysts with mixed compositions, e.g., CuFe and MnFe. Upon insertion of the transition metal species into crystalline structure of alumina to maximize atom efficiency, the N2O formation profile did not change significantly for all metal aluminates except MnAl2O4, indicating that these catalysts are suitable for SCR and selectively promote the reduction of NO.
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Affiliation(s)
- Alexandre A S Gonçalves
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, United States
| | - Filip Ciesielczyk
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, PL-60965 Poznan, Poland
| | - Bogdan Samojeden
- Faculty of Energy and Fuels, AGH University of Science and Technology, PL-30059 Krakow, Poland
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240, United States.
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21
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Bathellier A, Moreno D, Maron L, Dinoi C, Rosal I. Grafting of Lanthanum Complexes on a Functionalized Graphene Surface: Theoretical Investigation on Ethylene and 1,3‐Butadiene Homo‐ and Co‐Polymerization. Chemistry 2020; 26:13213-13225. [DOI: 10.1002/chem.202001056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Adrien Bathellier
- INSA, UPS, CNRS (UMR 5215), Institut National des, Sciences Appliquées, LPCNO (IRSAMC) Université de Toulouse 135 avenue de Rangueil 31077 Toulouse France
| | - Diego Moreno
- INSA, UPS, CNRS (UMR 5215), Institut National des, Sciences Appliquées, LPCNO (IRSAMC) Université de Toulouse 135 avenue de Rangueil 31077 Toulouse France
| | - Laurent Maron
- INSA, UPS, CNRS (UMR 5215), Institut National des, Sciences Appliquées, LPCNO (IRSAMC) Université de Toulouse 135 avenue de Rangueil 31077 Toulouse France
| | - Chiara Dinoi
- INSA, UPS, CNRS (UMR 5215), Institut National des, Sciences Appliquées, LPCNO (IRSAMC) Université de Toulouse 135 avenue de Rangueil 31077 Toulouse France
| | - Iker Rosal
- INSA, UPS, CNRS (UMR 5215), Institut National des, Sciences Appliquées, LPCNO (IRSAMC) Université de Toulouse 135 avenue de Rangueil 31077 Toulouse France
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22
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Moroz IB, Florian P, Viger‐Gravel J, Gordon CP, Lesage A, Copéret C. Silica‐Grafted Tris(neopentyl)aluminum: A Monomeric Aluminum Solid Co‐catalyst for Efficient Nickel‐Catalyzed Ethene Dimerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ilia B. Moroz
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Pierre Florian
- CEMHTI CNRS UPR3079 Université d'Orléans 1D Avenue de la Recherche-Scientifique 45071 Orléans Cedex 2 France
| | - Jasmine Viger‐Gravel
- Centre de RMN à Très Hauts Champs Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1) 69100 Villeurbanne France
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1) 69100 Villeurbanne France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
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23
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Wang Q, Li W, Hung I, Mentink-Vigier F, Wang X, Qi G, Wang X, Gan Z, Xu J, Deng F. Mapping the oxygen structure of γ-Al 2O 3 by high-field solid-state NMR spectroscopy. Nat Commun 2020; 11:3620. [PMID: 32680993 PMCID: PMC7367832 DOI: 10.1038/s41467-020-17470-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/30/2020] [Indexed: 11/29/2022] Open
Abstract
γ-Al2O3 is one of the most widely used catalysts or catalyst supports in numerous industrial catalytic processes. Understanding the structure of γ-Al2O3 is essential to tuning its physicochemical property, which still remains a great challenge. We report a strategy for the observation and determination of oxygen structure of γ-Al2O3 by using two-dimensional (2D) solid-state NMR spectroscopy at high field. 2D 17O double-quantum single-quantum homonuclear correlation NMR experiment is conducted at an ultra-high magnetic field of 35.2 T to reveal the spatial proximities between different oxygen species from the bulk to surface. Furthermore, 2D proton-detected 1H-17O heteronuclear correlation NMR experiments allow for a rapid identification and differentiation of surface hydroxyl groups and (sub-)surface oxygen species. Our experimental results demonstrate a non-random distribution of oxygen species in γ-Al2O3. γ-Al2O3 is widely used in catalytic processes, but understanding its detailed structure remains a challenge. The authors, using two-dimensional solid-state NMR spectroscopy at a high magnetic field, characterize the spatial proximity and connectivity between oxygen species from the bulk to the surface.
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Affiliation(s)
- Qiang Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Wenzheng Li
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Ivan Hung
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL, 32310-3706, USA
| | - Frederic Mentink-Vigier
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL, 32310-3706, USA
| | - Xiaoling Wang
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL, 32310-3706, USA
| | - Guodong Qi
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Xiang Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhehong Gan
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL, 32310-3706, USA
| | - Jun Xu
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China. .,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Feng Deng
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
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24
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Moroz IB, Florian P, Viger-Gravel J, Gordon CP, Lesage A, Copéret C. Silica-Grafted Tris(neopentyl)aluminum: A Monomeric Aluminum Solid Co-catalyst for Efficient Nickel-Catalyzed Ethene Dimerization. Angew Chem Int Ed Engl 2020; 59:16167-16172. [PMID: 32452148 DOI: 10.1002/anie.202006285] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/21/2020] [Indexed: 11/11/2022]
Abstract
A silica-supported monomeric alkylaluminum co-catalyst was prepared via surface organometallic chemistry by contacting tris(neopentyl)aluminum and partially dehydroxylated silica. This system, fully characterized by solid-state 27 Al NMR spectroscopy augmented by computational studies, efficiently activates (n Bu3 P)2 NiCl2 towards dimerization of ethene, demonstrating comparable activity to previously reported dimeric diethylaluminum chloride supported on silica. Three types of aluminum surface species have been identified: monografted tetracoordinated Al species as well as two types of bisgrafted Al species-tetra- and pentacoordinated. Of them, only the monografted Al species is proposed to be able to activate the (n Bu3 P)2 NiCl2 complex and generate the active cationic species.
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Affiliation(s)
- Ilia B Moroz
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
| | - Pierre Florian
- CEMHTI CNRS UPR3079, Université d'Orléans, 1D Avenue de la Recherche-Scientifique, 45071, Orléans Cedex 2, France
| | - Jasmine Viger-Gravel
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Christopher P Gordon
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
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25
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Mance D, Comas-Vives A, Copéret C. Proton-Detected Multidimensional Solid-State NMR Enables Precise Characterization of Vanadium Surface Species at Natural Abundance. J Phys Chem Lett 2019; 10:7898-7904. [PMID: 31770488 DOI: 10.1021/acs.jpclett.9b02872] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Heterogeneous catalysts fulfill vital roles in industrial processes; however, the nature of the catalytic surfaces, typically either containing a low abundance of active sites or being amorphous in nature, leads to difficulties when attempting to study the structure of the active sites. In this work, we show how making use of fast MAS ssNMR allows one to efficiently detect well-resolved 1H-detected spectra of heterogeneous catalysts. This approach was applied to study the structure of surface species resulting from the grafting of VO(OiPr)3 onto a partially dehydroxylated silica using the surface organometallic chemistry approach. The use of 1H sensitivity enabled detection of various hetero- and homonuclear correlation spectra in order to study the structure of this system and to resolve the structure of the grafted vanadium complex. More specifically, VO(OiPr)3 grafts through both protonolysis and opening of siloxane bridges to generate a bis-grafted species.
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Affiliation(s)
- Deni Mance
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog Weg 1-5 , CH-8093 Zürich , Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog Weg 1-5 , CH-8093 Zürich , Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog Weg 1-5 , CH-8093 Zürich , Switzerland
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26
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Cobalt-Based Fischer–Tropsch Synthesis: A Kinetic Evaluation of Metal–Support Interactions Using an Inverse Model System. Catalysts 2019. [DOI: 10.3390/catal9100794] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Metal–support interactions in the cobalt–alumina system are evaluated using an inverse model system generated by impregnating Co3O4 with a solution of aluminum sec-butoxide in n-hexane. This results in the formation of nano-sized alumina islands on the surface of cobalt oxide. The activated model systems were kinetically evaluated for their activity and selectivity in the Fischer–Tropsch synthesis under industrially relevant conditions (220 °C, 20 bar). The kinetic measurements were complemented by H2-chemisorption, CO-TPR, and pyridine TPD. It is shown that the introduction of aluminum in the model system results in the formation of strong acid sites and enhanced CO dissociation, as evidenced in the CO-TPR. The incorporation of aluminum in the model systems led to a strong increase in the activity factor per surface atom of cobalt in the rate expression proposed by Botes et al. (2009). However, the addition of aluminum also resulted in a strong increase in the kinetic inhibition factor. This is accompanied by a strong decrease in the methane selectivity, and an increase in the desired C5+ selectivity. The observed activity and selectivity changes are attributed to the increase in the coverage of the surface with carbon with increasing aluminum content, due to the facilitation of CO dissociation in the presence of Lewis acid sites associated with the alumina islands on the catalytically active material.
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27
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Gnad C, Dachwald O, Raudaschl-Sieber G, Köhler K. Synthesis of methyl palladium complexes on silica as single site catalysts activating C Cl bonds in heck reactions. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports. Nat Commun 2019; 10:1611. [PMID: 30962455 PMCID: PMC6453908 DOI: 10.1038/s41467-019-09662-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/09/2019] [Indexed: 01/30/2023] Open
Abstract
The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions. The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions remains challenging, even though the strategy of metal-support interactions has been extensively used. Here, the authors demonstrate an alternative strategy for designing robust nanocatalysts through a sintering-resistant support.
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29
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Feng X, Ji P, Li Z, Drake T, Oliveres P, Chen EY, Song Y, Wang C, Lin W. Aluminum Hydroxide Secondary Building Units in a Metal–Organic Framework Support Earth-Abundant Metal Catalysts for Broad-Scope Organic Transformations. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00259] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xuanyu Feng
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Pengfei Ji
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Zhe Li
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
- College of Chemistry and Chemical Engineering, iCHEM, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, China
| | - Tasha Drake
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Pau Oliveres
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Emily Y. Chen
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Yang Song
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Cheng Wang
- College of Chemistry and Chemical Engineering, iCHEM, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, China
| | - Wenbin Lin
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
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30
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Yang B, Sharkas K, Gagliardi L, Truhlar DG. The effects of active site and support on hydrogen elimination over transition-metal-functionalized yttria-decorated metal–organic frameworks. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01069f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Transition-metal catalysts supported on a metal–organic framework have been screened computationally to reveal the best catalytic candidates for hydrogen elimination reactions, which are critical in many catalytic cycles.
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Affiliation(s)
- Bo Yang
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Kamal Sharkas
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Laura Gagliardi
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Donald G. Truhlar
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
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31
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Werghi B, Bendjeriou‐Sedjerari A, Jedidi A, Morlanes N, Abou‐Hamad E, Bhatte K, Guan E, Ma T, Aguilar‐Tapia A, Ould‐Chikh S, Cavallo L, Gates BC, Basset J. Tungsten Catalyst Incorporating a Well‐Defined Tetracoordinated Aluminum Surface Ligand for Selective Metathesis of Propane, [(≡Si−O−Si≡)(≡Si−O−)
2
Al−O−W(≡C
t
Bu) (H)
2
]. ChemCatChem 2018. [DOI: 10.1002/cctc.201801779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Baraa Werghi
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | | | - Abdesslem Jedidi
- Department of Chemistry Faculty of Science King Abdulaziz University (KAU) Jeddah 21589 Kingdom of Saudi Arabia
| | - Natalia Morlanes
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Edy Abou‐Hamad
- King Abdullah University of Science and Technology(KAUST) Core Labs Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Kushal Bhatte
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Erjia Guan
- Department of Materials Science and Engineering University of California Davis CA 95616 USA
| | - Tao Ma
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | | | - Samy Ould‐Chikh
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Luigi Cavallo
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Bruce C. Gates
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | - Jean‐Marie Basset
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
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32
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Yan F, Jiang J, Liu N, Gao Y, Meng Y, Li K, Chen X. Green synthesis of mesoporous γ-Al 2O 3 from coal fly ash with simultaneous on-site utilization of CO 2. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:535-543. [PMID: 30092539 DOI: 10.1016/j.jhazmat.2018.07.104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/12/2017] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Mesoporous Al2O3 with crystalline framework walls has expanded all over the world due to the various potential applications especially in catalysis. Here, we develop a green and facile approach for the conversion of coal fly ash (CFA) into ordered mesoporous γ-Al2O3. The practical and promising lime-sinter method was comprehensively studied for the extraction of aluminum from CFA as a first step. The extraction efficiency of aluminum could reach up to 87.42%, through calcining with CaCO3 at 1390°C for 1 h and then dissolving in Na2CO3 solution at 70°C for 0.5 h. Combined with the urgent demand for CO2 emission reduction, simulated purified flue gas was introduced to precipitate the Al(OH)3 precursors without structure-directing agents for just 1 h, followed by calcining at only 400°C or 550°C. A series of characterizations were conducted to discuss the effect of precipitation temperature and calcination temperature, resulting the superior product (Al2O3-65/550) with high surface area (230.3 m2 g-1), crystalline γ-Al2O3 phase and ordered mesostructure. This proposed strategy, integrating the on-site recycling of CFA and utilization of CO2, appears to be promising for scalable production of mesoporous γ-Al2O3.
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Affiliation(s)
- Feng Yan
- School of Environment, Tsinghua University, Beijing 100084, China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jianguo Jiang
- School of Environment, Tsinghua University, Beijing 100084, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education, Beijing 100084, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing 100084, China.
| | - Nuo Liu
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Yuchen Gao
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Yuan Meng
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Kaimin Li
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Xuejing Chen
- School of Environment, Tsinghua University, Beijing 100084, China
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33
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Zhao Y, Sohn H, Hu B, Niklas J, Poluektov OG, Tian J, Delferro M, Hock AS. Zirconium Modification Promotes Catalytic Activity of a Single-Site Cobalt Heterogeneous Catalyst for Propane Dehydrogenation. ACS OMEGA 2018; 3:11117-11127. [PMID: 31459220 PMCID: PMC6645419 DOI: 10.1021/acsomega.8b00862] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/30/2018] [Indexed: 06/10/2023]
Abstract
The effect of Zr modification on the catalytic activity of Co/SiO2 was investigated for nonoxidative propane dehydrogenation. Isolated Zr on SiO2 surface sites were prepared by organometallic synthesis using Zr(O t Bu)4 as a precursor. The resulting Zr/SiO2 support was functionalized with Co2+ ions via strong electrostatic adsorption. Spectroscopic (diffuse reflectance infrared Fourier transform spectroscopy, UV-vis, electron paramagnetic resonance) and microscopic characterization (transmission electron microscopy, scanning transition electron microscopy) results are consistent with single-site cobalt that preferentially associates with the mono-dispersed Zr at a variety of loadings and Co/Zr ratios. The oxidation state of Co in the as-prepared Co/SiO2 and Co-Zr/SiO2 was both +2 with tetrahedral and octahedral geometries, respectively. In situ X-ray absorption near edge structure and extended X-ray absorption fine structure results confirmed that the oxidation state of Co remained as +2 under reaction condition for both Co/SiO2 and Co-Zr/SiO2 samples and both catalysts have tetrahedral Co2+ as the active catalyst. Despite similar Co coordination environments, the catalytic activity and selectivity was significantly improved by the Zr modification of the silica support versus Co/SiO2. This was attributed to the change in oxygen donor ability and Co-O bond strength of the ≡SiO-Zr-O sites of Co-Zr/SiO2 compared with the ≡SiO- ligands in Co/SiO2. These results show that tuning of the support SiO2 oxygen donation ability by use of an anchoring site (e.g., ≡SiO-Zr-O-) can be used to alter both rate and selectivity of propane dehydrogenation with single-site heterogeneous catalysts. These results also show some preference for Co2+ active sites to associate with ≡SiO-Zr-O- sites over ≡SiO-.
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Affiliation(s)
- Yiqing Zhao
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Hyuntae Sohn
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Bo Hu
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jens Niklas
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Oleg G. Poluektov
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jun Tian
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Adam S. Hock
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
- Chemical Sciences and Engineering Division and Center for Nanoscale
Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
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34
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Coordination-polymer anchored single-site ‘Pd-NHC’ catalyst for Suzuki-Miyaura coupling in water. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1487-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Li W, Wang Q, Xu J, Aussenac F, Qi G, Zhao X, Gao P, Wang C, Deng F. Probing the surface of γ-Al 2O 3 by oxygen-17 dynamic nuclear polarization enhanced solid-state NMR spectroscopy. Phys Chem Chem Phys 2018; 20:17218-17225. [PMID: 29900471 DOI: 10.1039/c8cp03132k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
γ-Al2O3 is an important catalyst and catalyst support of industrial interest. Its acid/base characteristics are correlated to the surface structure, which has always been an issue of concern. In this work, the complex (sub-)surface oxygen species on surface-selectively labelled γ-Al2O3 were probed by 17O dynamic nuclear polarization surface-enhanced NMR spectroscopy (DNP-SENS). Direct 17O MAS and indirect 1H-17O cross-polarization (CP)/MAS DNP experiments enable observation of the (sub-)surface bare oxygen species and hydroxyl groups. In particular, a two-dimensional (2D) 17O 3QMAS DNP spectrum was for the first time achieved for γ-Al2O3, in which two O(Al)4 and one O(Al)3 bare oxygen species were identified. The 17O isotropic chemical shifts (δcs) vary from 56.7 to 81.0 ppm and the quadrupolar coupling constants (CQ) range from 0.6 to 2.5 MHz for the three oxygen species. The coordinatively unsaturated O(Al)3 species is characterized by a higher field chemical shift (56.7 ppm) and the largest CQ value (2.5 MHz) among these oxygen sites. 2D 1H → 17O HETCOR DNP experiments allow us to discriminate three bridging (Aln)-μ2-OH and two terminal (Aln)-μ1-OH hydroxyl groups. The structural features of the bare oxygen species and hydroxyl groups are similar for the γ-Al2O3 samples isotopically labelled by 17O2 gas or H217O. The results presented here show that the combination of surface-selective labelling and DNP-SENS is an effective approach for characterizing oxides with complex surface species.
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Affiliation(s)
- Wenzheng Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
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36
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Culver DB, Tafazolian H, Conley MP. A Bulky Pd(II) α-Diimine Catalyst Supported on Sulfated Zirconia for the Polymerization of Ethylene and Copolymerization of Ethylene and Methyl Acrylate. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00016] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Damien B. Culver
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Hosein Tafazolian
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Matthew P. Conley
- Department of Chemistry, University of California, Riverside, California 92521, United States
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37
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Samantaray MK, Pump E, Bendjeriou-Sedjerari A, D’Elia V, Pelletier JDA, Guidotti M, Psaro R, Basset JM. Surface organometallic chemistry in heterogeneous catalysis. Chem Soc Rev 2018; 47:8403-8437. [DOI: 10.1039/c8cs00356d] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface organometallic chemistry has been reviewed with a special focus on environmentally relevant transformations (C–H activation, CO2conversion, oxidation).
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Affiliation(s)
- Manoja K. Samantaray
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Eva Pump
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | | | - Valerio D’Elia
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology
- WangChan
- Thailand
| | - Jérémie D. A. Pelletier
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Matteo Guidotti
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Rinaldo Psaro
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Jean-Marie Basset
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
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38
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Estes DP, Gordon CP, Fedorov A, Liao WC, Ehrhorn H, Bittner C, Zier ML, Bockfeld D, Chan KW, Eisenstein O, Raynaud C, Tamm M, Copéret C. Molecular and Silica-Supported Molybdenum Alkyne Metathesis Catalysts: Influence of Electronics and Dynamics on Activity Revealed by Kinetics, Solid-State NMR, and Chemical Shift Analysis. J Am Chem Soc 2017; 139:17597-17607. [DOI: 10.1021/jacs.7b09934] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deven P. Estes
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Christopher P. Gordon
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Wei-Chih Liao
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Henrike Ehrhorn
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Celine Bittner
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Manuel Luca Zier
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Ka Wing Chan
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
- Hylleraas
Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Christophe Raynaud
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
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39
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Goldsmith BR, Peters B, Johnson JK, Gates BC, Scott SL. Beyond Ordered Materials: Understanding Catalytic Sites on Amorphous Solids. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01767] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bryan R. Goldsmith
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
- Department
of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States
| | - Baron Peters
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - J. Karl Johnson
- Department
of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Susannah L. Scott
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
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40
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Copéret C, Fedorov A, Zhizhko PA. Surface Organometallic Chemistry: Paving the Way Beyond Well-Defined Supported Organometallics and Single-Site Catalysis. Catal Letters 2017. [DOI: 10.1007/s10562-017-2107-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Wright CMR, Ruengkajorn K, Kilpatrick AFR, Buffet JC, O’Hare D. Controlling the Surface Hydroxyl Concentration by Thermal Treatment of Layered Double Hydroxides. Inorg Chem 2017; 56:7842-7850. [PMID: 28653842 DOI: 10.1021/acs.inorgchem.7b00582] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher M. R. Wright
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Kanittika Ruengkajorn
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alexander F. R. Kilpatrick
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Jean-Charles Buffet
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Dermot O’Hare
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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42
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Casas-Orozco D, Alarcón E, Carrero CA, Venegas JM, McDermott W, Klosterman E, Hermans I, Villa AL. Influence of Tin Loading and Pore Size of Sn/MCM-41 Catalysts on the Synthesis of Nopol. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00789] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Casas-Orozco
- Chemical
Engineering Department, Environmental Catalysis Research Group, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
| | - Edwin Alarcón
- Chemical
Engineering Department, Environmental Catalysis Research Group, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
| | - Carlos A. Carrero
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Juan M. Venegas
- Department
of Chemical and Biological Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - William McDermott
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ellen Klosterman
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ive Hermans
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Department
of Chemical and Biological Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Aída-Luz Villa
- Chemical
Engineering Department, Environmental Catalysis Research Group, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
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43
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Sun X, Zhou S, Schlangen M, Schwarz H. Thermal Methane Activation by the Metal-Free Cluster Cation [Si 2 O 4 ] .. Chemistry 2017; 23:1498-1501. [PMID: 27943447 DOI: 10.1002/chem.201605496] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Indexed: 02/05/2023]
Abstract
The thermal reaction of methane with the metal-free cluster cation [Si2 O4 ].+ has been examined by using Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry. In addition to generating a methyl radical via hydrogen-atom abstraction, [Si2 O4 ].+ can selectively oxidize methane to formaldehyde. The mechanisms of these rather efficient reactions have been elucidated by high-level quantum-chemical calculations.
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Affiliation(s)
- Xiaoyan Sun
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Shaodong Zhou
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Maria Schlangen
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Helmut Schwarz
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
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44
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Comas-Vives A, Larmier K, Copéret C. Understanding surface site structures and properties by first principles calculations: an experimental point of view! Chem Commun (Camb) 2017; 53:4296-4303. [DOI: 10.1039/c7cc01101f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Computational Chemistry is key for the molecular-level understanding of active sites in heterogeneous catalysis paving the way to the rational design and development.
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Affiliation(s)
- Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences
- ETH Zürich
- CH-8093 Zürich
- Switzerland
| | - Kim Larmier
- Department of Chemistry and Applied Biosciences
- ETH Zürich
- CH-8093 Zürich
- Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences
- ETH Zürich
- CH-8093 Zürich
- Switzerland
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45
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Carrero CA, Burt SP, Huang F, Venegas JM, Love AM, Mueller P, Zhu H, Grant JT, Mathison R, Hanraham MP, Rossini A, Ball M, Dumesic J, Hermans I. Supported two- and three-dimensional vanadium oxide species on the surface of β-SiC. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01036b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dispersing two-dimensional VOx species on β-SiC offers a new approach to scale up propane ODH.
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46
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Mondal M, Joji J, Choudhury J. Designing a heterogeneous Pd(ii)–NHC-based C–H activation catalyst on a self-supported coordination polymer platform. Chem Commun (Camb) 2017; 53:3185-3188. [DOI: 10.1039/c6cc09935a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An extended RuII(terpy)2-based coordination polymer provides a potential scaffold to design a self-supported, single-site PdII(NHC) oxidative catalyst for challenging reactions such as selective arene monohalogenation with enhanced catalytic activity compared to the homogeneous counterpart.
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Affiliation(s)
- Moumita Mondal
- Organometallics and Smart Materials Laboratory
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462 066
- India
| | - Jinu Joji
- Organometallics and Smart Materials Laboratory
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462 066
- India
| | - Joyanta Choudhury
- Organometallics and Smart Materials Laboratory
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462 066
- India
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47
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Delley MF, Silaghi MC, Nuñez-Zarur F, Kovtunov KV, Salnikov OG, Estes DP, Koptyug IV, Comas-Vives A, Copéret C. X–H Bond Activation on Cr(III),O Sites (X = R, H): Key Steps in Dehydrogenation and Hydrogenation Processes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00744] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Murielle F. Delley
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Marius-C. Silaghi
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Francisco Nuñez-Zarur
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
- Instituto
de Química, Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia
| | - Kirill V. Kovtunov
- International Tomography Center, 3A
Institutskaya St., 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
St. 2, 630090 Novosibirsk, Russia
| | - Oleg G. Salnikov
- International Tomography Center, 3A
Institutskaya St., 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
St. 2, 630090 Novosibirsk, Russia
| | - Deven P. Estes
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Igor V. Koptyug
- International Tomography Center, 3A
Institutskaya St., 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
St. 2, 630090 Novosibirsk, Russia
| | - Aleix Comas-Vives
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- ETH Zürich, Department of Chemistry and
Applied Biosciences, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
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48
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Estes DP, Siddiqi G, Allouche F, Kovtunov KV, Safonova OV, Trigub AL, Koptyug IV, Copéret C. C–H Activation on Co,O Sites: Isolated Surface Sites versus Molecular Analogs. J Am Chem Soc 2016; 138:14987-14997. [DOI: 10.1021/jacs.6b08705] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Deven P. Estes
- Department of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland
| | - Georges Siddiqi
- Department of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland
| | - Florian Allouche
- Department of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland
| | - Kirill V. Kovtunov
- International Tomography Center, SB RAS, 3A Institutskaya
St., Novosibirsk 630090, Russia
- Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia
| | - Olga V. Safonova
- General Energy Research Department, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - Alexander L. Trigub
- National Research Centre “Kurchatov Institute”, 1 Akademika Kurchatova Pl., 123182 Moscow, Russia
| | - Igor V. Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya
St., Novosibirsk 630090, Russia
- Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland
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49
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Copéret C, Estes DP, Larmier K, Searles K. Isolated Surface Hydrides: Formation, Structure, and Reactivity. Chem Rev 2016; 116:8463-505. [DOI: 10.1021/acs.chemrev.6b00082] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P. Estes
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Kim Larmier
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Keith Searles
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
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50
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Valla M, Wischert R, Comas-Vives A, Conley MP, Verel R, Copéret C, Sautet P. Role of Tricoordinate Al Sites in CH3ReO3/Al2O3 Olefin Metathesis Catalysts. J Am Chem Soc 2016; 138:6774-85. [DOI: 10.1021/jacs.6b00447] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maxence Valla
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Raphael Wischert
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Aleix Comas-Vives
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Matthew P. Conley
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - René Verel
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Philippe Sautet
- Univ Lyon, Ens de Lyon, CNRS, Université Lyon 1, Laboratoire de Chimie UMR 5182, F 69342 Lyon, France
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