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Wu Q, Qin R, Zhu M, Shen H, Yu S, Zhong Y, Fu G, Yi X, Zheng N. Frustrated Lewis pairs on pentacoordinated Al 3+-enriched Al 2O 3 promote heterolytic hydrogen activation and hydrogenation. Chem Sci 2024; 15:3140-3147. [PMID: 38425526 PMCID: PMC10901510 DOI: 10.1039/d3sc06425e] [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: 11/30/2023] [Accepted: 01/09/2024] [Indexed: 03/02/2024] Open
Abstract
As an emerging class of metal-free catalysts, frustrated Lewis pairs (FLPs) catalysts have been greatly constructed and applied in many fields. Homogeneous FLPs have witnessed significant development, while limited heterogeneous FLPs catalysts are available. Herein, we report that heterogeneous FLPs on pentacoordinated Al3+-enriched Al2O3 readily promote the heterolytic activation of H2 and thus hydrogenation catalysis. The defect-rich Al2O3 was prepared by simple calcination of a carboxylate-containing Al precursor. Combinatorial studies confirmed the presence of rich FLPs on the surface of the defective Al2O3. In contrast to conventional alumina (γ-Al2O3), the FLP-containing Al2O3 can activate H2 in the absence of any transition metal species. More importantly, H2 was activated by surface FLPs in a heterolytic pathway, leading to the hydrogenation of styrene in a stepwise process. This work paves the way for the exploration of more underlying heterogeneous FLPs catalysts and further understanding of accurate active sites and catalytic mechanisms of heterogeneous FLPs at the molecular level.
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Affiliation(s)
- Qingyuan Wu
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of 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
| | - Ruixuan Qin
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
- Fujian Key Laboratory of Rare-Earth Functional Materials, Fujian Shanhai Collaborative Innovation Center of Rare-Earth Functional Materials Longyan 366300 China
| | - Mengsi Zhu
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen 361102 China
| | - Hui Shen
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Shenshui Yu
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Yuanyuan Zhong
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Gang Fu
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Xiaodong Yi
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Nanfeng Zheng
- New Cornerstone Science Laboratory, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of 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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2
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Yasumura S, Kamachi T, Toyao T, Shimizu KI, Hinuma Y. Prediction of Stable Surfaces of Metal Oxides through the Unsaturated Coordination Index. ACS OMEGA 2023; 8:29779-29788. [PMID: 37599947 PMCID: PMC10433516 DOI: 10.1021/acsomega.3c04253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 07/10/2023] [Indexed: 08/22/2023]
Abstract
This study proposes the unsaturated coordination index, σ, as a potential descriptor of the stability of metal-oxide surfaces cleaved from bulk. The value of σ, the number of missing bonds per unit area, can be obtained very quickly using only crystallographic data, namely, the bulk geometry. The surface energies of various binary oxides, with and without atom relaxation, were calculated. Their correlations with σ had good coefficients of determination (R2) values, particularly in high-symmetry crystals. The proposed descriptor is very useful for an initial evaluation of stable metal-oxide surfaces without conducting any surface model calculations.
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Affiliation(s)
- Shunsaku Yasumura
- Institute
of Industrial Science, The University of
Tokyo, Komaba 4-6-1, Meguro, Tokyo 153-8505, Japan
| | - Takashi Kamachi
- Department
of Life, Environment and Applied Chemistry, Fukuoka Institute of Technology, 3-30-1 Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Takashi Toyao
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Kita, Sapporo 001-0021, Hokkaido, Japan
| | - Ken-ichi Shimizu
- Institute
for Catalysis, Hokkaido University, N-21, W-10, Kita, Sapporo 001-0021, Hokkaido, Japan
| | - Yoyo Hinuma
- Department
of Energy and Environment, National Institute
of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda 563-8577, Osaka, Japan
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3
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Yan H, Liu B, Zhou X, Meng F, Zhao M, Pan Y, Li J, Wu Y, Zhao H, Liu Y, Chen X, Li L, Feng X, Chen D, Shan H, Yang C, Yan N. Enhancing polyol/sugar cascade oxidation to formic acid with defect rich MnO 2 catalysts. Nat Commun 2023; 14:4509. [PMID: 37495568 PMCID: PMC10372030 DOI: 10.1038/s41467-023-40306-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023] Open
Abstract
Oxidation of renewable polyol/sugar into formic acid using molecular O2 over heterogeneous catalysts is still challenging due to the insufficient activation of both O2 and organic substrates on coordination-saturated metal oxides. In this study, we develop a defective MnO2 catalyst through a coordination number reduction strategy to enhance the aerobic oxidation of various polyols/sugars to formic acid. Compared to common MnO2, the tri-coordinated Mn in the defective MnO2 catalyst displays the electronic reconstruction of surface oxygen charge state and rich surface oxygen vacancies. These oxygen vacancies create more Mnδ+ Lewis acid site together with nearby oxygen as Lewis base sites. This combined structure behaves much like Frustrated Lewis pairs, serving to facilitate the activation of O2, as well as C-C and C-H bonds. As a result, the defective MnO2 catalyst shows high catalytic activity (turnover frequency: 113.5 h-1) and formic acid yield (>80%) comparable to noble metal catalysts for glycerol oxidation. The catalytic system is further extended to the oxidation of other polyols/sugars to formic acid with excellent catalytic performance.
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Affiliation(s)
- Hao Yan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Engineering Drive 4, 117585, Singapore
| | - Bowen Liu
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD, Liverpool, UK
| | - Xin Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100, China
| | - Fanyu Meng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Mingyue Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yue Pan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Jie Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yining Wu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China
| | - Hui Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Yibin Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China.
| | - Xiaobo Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Lina Li
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Xiang Feng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China.
| | - De Chen
- Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway
| | - Honghong Shan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Chaohe Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Engineering Drive 4, 117585, Singapore.
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4
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Singh P, Gogoi A, Aien QU, Dixit M. Assessing the Effect of Dopants on the C-H Activation Activity of γ-Al 2 O 3 using First-Principles Calculations. Chemphyschem 2023; 24:e202200670. [PMID: 36324289 DOI: 10.1002/cphc.202200670] [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: 09/03/2022] [Revised: 10/21/2022] [Indexed: 11/06/2022]
Abstract
In recent years, the high availability of methane in the shale gas reserves has raised significant interest in its conversion to high-value chemicals but this process is still not commercially viable. Metal oxides, due to their surface heterogeneity and the presence of Lewis acidic and basic site pairs are known to facilitate the activation of C-H bonds of methane. In this work, we investigate the C-H bond activation of methane on pristine and doped γ-Al2 O3 clusters using density functional theory (DFT) calculations. Our results demonstrate that the polar pathway is energetically preferred over the radical pathway on these systems. We found that the metal dopants (boron and gallium) not only alter the catalytic activity of dopant sites but this effect is more pronounced on some of the adjacent sites (non-local). Among the selected dopants, gallium greatly improves the catalytic activity on most of the site pairs (including most active and least active) of pristine γ-Al2 O3 . Additionally, we identified a correlation between H2 binding energies and the C-H activation free energies on Ga-doped γ-Al2 O3 .
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Affiliation(s)
- Priti Singh
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India
| | - Amrita Gogoi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata-Mohanpur, Nadia, 741 246, West Bengal, India
| | - Qurat Ul Aien
- Department of Chemistry, Lovely Professional University, Phagwara, 144001, Paunjab, India
| | - Mudit Dixit
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India
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5
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Samudrala KK, Huynh W, Dorn RW, Rossini AJ, Conley MP. Formation of a Strong Heterogeneous Aluminum Lewis Acid on Silica. Angew Chem Int Ed Engl 2022; 61:e202205745. [DOI: 10.1002/anie.202205745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/10/2022]
Affiliation(s)
| | - Winn Huynh
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Rick W. Dorn
- Department of Chemistry Iowa State University Ames IA 50011 USA
- U.S. Department of Energy Ames Laboratory Ames IA 50011 USA
| | - Aaron J. Rossini
- Department of Chemistry Iowa State University Ames IA 50011 USA
- U.S. Department of Energy Ames Laboratory Ames IA 50011 USA
| | - Matthew P. Conley
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
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6
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Conley M, Samudrala KK, Huynh W, Dorn RW, Rossini AJ. Formation of a Strong Heterogeneous Aluminum Lewis Acid on Silica. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matthew Conley
- University of California, Riverside Chemistry 501 Big Springs Rd 92521 Riverside UNITED STATES
| | | | - Winn Huynh
- University of California Riverside Chemistry UNITED STATES
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7
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Affiliation(s)
- Divakar R. Aireddy
- Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Kunlun Ding
- Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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8
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Chen W, Han J, Wei Y, Zheng A. Frustrated Lewis Pair in Zeolite Cages for Alkane Activations. Angew Chem Int Ed Engl 2022; 61:e202116269. [PMID: 35179283 DOI: 10.1002/anie.202116269] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Indexed: 11/07/2022]
Abstract
The frustrated Lewis pair (FLP) concept in homogeneous catalysis was extended to heterogeneous catalysis via the supramolecular system of FLP between deprotonated zeolite framework oxygens and confined carbocations in methanol-to-olefin (MTO) reactions. In this FLP, the polymethylbenzenium (PMB+ ) functioned as the Lewis acid to accept an electron pair, and the deprotonated framework oxygen site acted as the Lewis base to donate an electron pair. This FLP theoretically demonstrated the ability to undergo H2 heterolysis and alkanes dehydrogenation, and this was further confirmed by gas chromatography-mass spectrometer (GC-MS) catalytic experiments inside FLP-containing chabazite zeolites. All these findings not only bring new recognition to the carbocation chemistry in zeolite cages but also put forward a new reaction pathway as one part of MTO reactions.
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Affiliation(s)
- Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, 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, P.R. China
| | - Jingfeng Han
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, 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, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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9
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Chen W, Han J, Wei Y, Zheng A. Frustrated Lewis Pair in Zeolite Cages for Alkane Activations. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan 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 P.R. China
| | - Jingfeng Han
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P.R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P.R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan 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 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
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10
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Pigeon T, Chizallet C, Raybaud P. Revisiting γ-alumina surface models through the topotactic transformation of boehmite surfaces. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Morteo‐Flores F, Roldan A. The Effect of Pristine and Hydroxylated Oxide Surfaces on the Guaiacol HDO Process: A DFT Study. Chemphyschem 2021; 23:e202100583. [PMID: 34495572 PMCID: PMC9292963 DOI: 10.1002/cphc.202100583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/07/2021] [Indexed: 11/07/2022]
Abstract
The acid‐base character of oxide supports is crucial for catalytic reactions. In this work, the acid‐base properties of five oxide surfaces common in heterogeneous catalysis were investigated and related to their interaction with monolignol compounds derived from lignin. We have used density functional theory simulations also to understand the role of the surfaces’ hydroxylation state. The results show that moderate hydroxyl coverage on the amphoteric γ‐Al2O3 (110) slightly strengthens the oxy‐compounds’ adsorption due to an increase in Lewis acidity. Similarly, low hydroxyl coverage on the reducible TiO2 (101) enlarges its adsorption capacity by up to 42 % compared with its clean surface. The higher affinity is attributed to the more favourable interaction between the surface‐OH groups and the aromatic rings. Overall, the results indicate that hydroxyl coverage enhances the amphoteric and reducible adsorption capacity towards aromatic species.
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Affiliation(s)
- Fabian Morteo‐Flores
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Alberto Roldan
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
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12
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Khivantsev K, Jaegers NR, Kwak JH, Szanyi J, Kovarik L. Precise Identification and Characterization of Catalytically Active Sites on the Surface of γ-Alumina*. Angew Chem Int Ed Engl 2021; 60:17522-17530. [PMID: 33904227 DOI: 10.1002/anie.202102106] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/09/2021] [Indexed: 11/10/2022]
Abstract
γ-alumina is one of the oldest and most important commercial catalytic materials with high surface area and stability. These attributes enabled its use as the first commercial large-scale heterogeneous catalyst for ethanol dehydration. Despite progress in materials characterization the nature of the specific sites on the surface of γ-alumina that are responsible for its unique catalytic properties has remained obscure and controversial. By using combined infrared spectroscopy, electron microscopy and solid-state nuclear magnetic resonance measurements we identify the octahedral, amphoteric (O)5 Al(VI)-OH sites on the (100) segments of massively restructured (110) facets on typical rhombus-platelet γ-alumina as well as the (100) segments of irrational surfaces (invariably always present in all γ-alumina samples) responsible for its unique catalytic activity. Such (O)5 Al(VI)-OH sites are also present on the macroscopically defined (100) facets of γ-alumina with elongated/rod-like geometry. The mechanism by which these sites lose -OH groups upon thermal dehydroxylation resulting in coordinatively unsaturated penta-coordinate Al+3 O5 sites is clarified. These coordinatively unsaturated penta-coordinate Al sites produce well-defined thermally stable Al-carbonyl complexes. Our findings contribute to the understanding of the nature of coordinatively unsaturated Al sites on the surface of γ-alumina and their role as catalytically active sites.
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Affiliation(s)
- Konstantin Khivantsev
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Nicholas R Jaegers
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Ja-Hun Kwak
- Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Janos Szanyi
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Libor Kovarik
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
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13
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Khivantsev K, Jaegers NR, Kwak J, Szanyi J, Kovarik L. Precise Identification and Characterization of Catalytically Active Sites on the Surface of γ‐Alumina**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102106] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Konstantin Khivantsev
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Nicholas R. Jaegers
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Ja‐Hun Kwak
- Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Janos Szanyi
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Libor Kovarik
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
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14
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Dhokale B, Susarrey‐Arce A, Pekkari A, Runemark A, Moth‐Poulsen K, Langhammer C, Härelind H, Busch M, Vandichel M, Sundén H. Microwave‐heated γ‐Alumina Applied to the Reduction of Aldehydes to Alcohols. ChemCatChem 2020. [DOI: 10.1002/cctc.202001284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bhausaheb Dhokale
- Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Arturo Susarrey‐Arce
- Department of Physics Chalmers University of Technology 412 96 Gothenburg Sweden
- Mesoscale Chemical Systems MESA+ Institute University of Twente P.O. Box 217 Enschede 7500AE Netherlands
| | - Anna Pekkari
- Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - August Runemark
- Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Kasper Moth‐Poulsen
- Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Christoph Langhammer
- Department of Physics Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Hanna Härelind
- Competence Centre for Catalysis Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Michael Busch
- Department of Chemistry and Material Science School of Chemical Engineering Aalto Universit 02150 Espoo Finland
| | - Matthias Vandichel
- Department of Chemical Sciences and Bernal Institute University of Limerick Limerick V94 T9PX Ireland
| | - Henrik Sundén
- Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
- Chemistry and Molecular Biology University of Gothenburg 412 96 Gothenburg Sweden
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15
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An Eco-Friendly Fluidizable FexOy/CaO-γ-Al2O3 Catalyst for Tar Cracking during Biomass Gasification. Catalysts 2020. [DOI: 10.3390/catal10070806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The present study deals with the development, characterization, and performance evaluation of an eco-friendly catalyst, using 2-methoxy-4-methylphenol (2M4MP) as a surrogate tar. The 2M4MP was selected due to its chemical functionalities and the fact that it is a good model compound to represent the tar formed during biomass low temperature gasification. The eco-friendly catalyst was prepared using the typical Fe and Ca minerals which are present in ash. These ash components were added to a fluidizable γ-Al2O3 support using a multistep incipient impregnation, yielding Fe oxides as an active phase and CaO as the promoter. The prepared catalyst displayed a 120 m2/g BET specific surface area, with few γ-Al2O3 bulk phase changes, as observed with XRD. TPD-NH3 and pyridine FTIR allowed us to show the significant influence of CaO reduced support acidity. A TPR analysis provided evidence of catalyst stability during consecutive reduction–oxidation cycles. Furthermore, catalyst evaluation vis-à-vis catalytic steam 2M4MP gasification was performed using the fluidized CREC riser simulator. The obtained results confirm the high performance of the developed catalyst, with 2M4MP conversion being close to 100% and with selectivities of up to 98.6% for C1-C2 carbon-containing species, at 500 °C, with a 7.5 s reaction time and 1.5 g steam/g 2M4MP. These high tar conversions are promising efficiency indicators for alumina catalysts doped with Fe and Ca. In addition, the used catalyst particles could be blended with biochar to provide an integrated solid supplement that could return valuable mineral supplements to the soil.
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16
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Shen L, Wang Y, Du JH, Chen K, Lin Z, Wen Y, Hung I, Gan Z, Peng L. Probing Interactions of γ-Alumina with Water via Multinuclear Solid-State NMR Spectroscopy. ChemCatChem 2020; 12:1569-1574. [PMID: 34168686 DOI: 10.1002/cctc.201901838] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Interaction of γ-alumina with water are important in controlling its structure and catalytic properties. We apply solid-state multinuclear NMR spectroscopy to investigate this interaction by monitoring 1H and 17O spectra in real-time. Surface-selective detection is made possible by adsorbing 17O-enriched water on γ-alumina nanorods. Structural evolution on the surface was selectively probed by 1H/17O double resonance NMR and 27Al NMR at ultrahigh 35.2 T magnetic field. Formation of hydroxyl species on the surface of nanorods is rapid upon the exposure of water, which involves low coordinated aluminum ions with doubly bridging and isolated hydroxyl species being generated first. Fast exchange occurs between oxygen atoms in the water molecules and bare surface sites, indicating high reactivity of these oxygen species. These results provide new insights into the structure and dynamics on the surface of γ-alumina and the methods applied here can be extended to study the interaction of other oxides with water.
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Affiliation(s)
- Li Shen
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.,Guangling College, Yangzhou University, Yangzhou 225009, China
| | - Yang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jia-Huan Du
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Kuizhi Chen
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Zhiye Lin
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yujie Wen
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ivan Hung
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Zhehong Gan
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Luming Peng
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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17
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Location of the Spinel Vacancies in γ‐Al
2
O
3. Angew Chem Int Ed Engl 2019; 58:15548-15552. [DOI: 10.1002/anie.201901497] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Indexed: 11/07/2022]
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18
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Affiliation(s)
- Roel Prins
- Institut für Chemie und Bioingenieurwissenschaften ETH Zürich Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
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19
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Meyet J, Searles K, Newton MA, Wörle M, van Bavel AP, Horton AD, van Bokhoven JA, Copéret C. Monomeric Copper(II) Sites Supported on Alumina Selectively Convert Methane to Methanol. Angew Chem Int Ed Engl 2019; 58:9841-9845. [DOI: 10.1002/anie.201903802] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/21/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Jordan Meyet
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Keith Searles
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Mark A. Newton
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Michael Wörle
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | | | - Andrew D. Horton
- Shell Global Solutions International B.V. Grasweg 31 1031 HW Amsterdam The Netherlands
| | - Jeroen A. van Bokhoven
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- Laboratory for Catalysis and Sustainable ChemistryPaul Scherrer Institute 5232 Villigen Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
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20
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Monomeric Copper(II) Sites Supported on Alumina Selectively Convert Methane to Methanol. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903802] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Lokare KS, Braun-Cula B, Limberg C, Jorewitz M, Kelly JT, Asmis KR, Leach S, Baldauf C, Goikoetxea I, Sauer J. Structure and Reactivity of Al−O(H)−Al Moieties in Siloxide Frameworks: Solution and Gas-Phase Model Studies. Angew Chem Int Ed Engl 2018; 58:902-906. [DOI: 10.1002/anie.201810130] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Kapil Shyam Lokare
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Christian Limberg
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
- IRIS-Adlershof; 12489 Berlin Germany
| | - Marcel Jorewitz
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstr. 2 04103 Leipzig Germany
| | - John T. Kelly
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstr. 2 04103 Leipzig Germany
| | - Knut R. Asmis
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstr. 2 04103 Leipzig Germany
| | - Stephen Leach
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
| | - Itziar Goikoetxea
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Joachim Sauer
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
- IRIS-Adlershof; 12489 Berlin Germany
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22
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Lokare KS, Braun-Cula B, Limberg C, Jorewitz M, Kelly JT, Asmis KR, Leach S, Baldauf C, Goikoetxea I, Sauer J. Struktur und Reaktivität der Al-O(H)-Al-Einheiten in Siloxidgerüstverbindungen - Modellstudien in Lösung und in Isolation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810130] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kapil Shyam Lokare
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Christian Limberg
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
- IRIS-Adlershof; 12489 Berlin Deutschland
| | - Marcel Jorewitz
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstraße 2 04103 Leipzig Deutschland
| | - John T. Kelly
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstraße 2 04103 Leipzig Deutschland
| | - Knut R. Asmis
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie; Universität Leipzig; Linnéstraße 2 04103 Leipzig Deutschland
| | - Stephen Leach
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Deutschland
| | - Itziar Goikoetxea
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Joachim Sauer
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
- IRIS-Adlershof; 12489 Berlin Deutschland
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23
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Culver DB, Conley MP. Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Damien B. Culver
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
| | - Matthew P. Conley
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
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24
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Culver DB, Conley MP. Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia. Angew Chem Int Ed Engl 2018; 57:14902-14905. [PMID: 30265766 DOI: 10.1002/anie.201809199] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Damien B. Culver
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
| | - Matthew P. Conley
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
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25
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Copéret C, Allouche F, Chan KW, Conley MP, Delley MF, Fedorov A, Moroz IB, Mougel V, Pucino M, Searles K, Yamamoto K, Zhizhko PA. Bridging the Gap between Industrial and Well‐Defined Supported Catalysts. Angew Chem Int Ed Engl 2018; 57:6398-6440. [DOI: 10.1002/anie.201702387] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Florian Allouche
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Ka Wing Chan
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Matthew P. Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- Current address: Department of ChemistryUniversity of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Murielle F. Delley
- 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
| | - Ilia B. Moroz
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- Current address: Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de FranceUniversité Pierre et Marie Curie 11 Place Marcelin Berthelot 75005 Paris France
| | - Margherita Pucino
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Keith Searles
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Keishi Yamamoto
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Pavel A. Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- A. N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilov street 28 119991 Moscow Russia
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26
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Copéret C, Allouche F, Chan KW, Conley MP, Delley MF, Fedorov A, Moroz IB, Mougel V, Pucino M, Searles K, Yamamoto K, Zhizhko PA. Eine Brücke zwischen industriellen und wohldefinierten Trägerkatalysatoren. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201702387] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Christophe Copéret
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Florian Allouche
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Ka Wing Chan
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Matthew P. Conley
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- Department of ChemistryUniversity of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Murielle F. Delley
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Alexey Fedorov
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Ilia B. Moroz
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Victor Mougel
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de FranceUniversité Pierre et Marie Curie 11 Place Marcelin Berthelot 75005 Paris Frankreich
| | - Margherita Pucino
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Keith Searles
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Keishi Yamamoto
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Pavel A. Zhizhko
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- A. N. Nesmeyanow-Institut für Elementorganische VerbindungenRussische Akademie der Wissenschaften Vavilov str. 28 119991 Moskau Russland
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27
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Calvo B, Braun T, Kemnitz E. Hydrogen/Deuterium-Exchange Reactions of Methane with Aromatics and Cyclohexane Catalyzed by a Nanoscopic Aluminum Chlorofluoride. ChemCatChem 2017. [DOI: 10.1002/cctc.201701327] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Beatriz Calvo
- Humboldt-Universität zu Berlin; Book-Taylor-Straße2 12489 Berlin Germany
| | - Thomas Braun
- Humboldt-Universität zu Berlin; Book-Taylor-Straße2 12489 Berlin Germany
| | - Erhard Kemnitz
- Humboldt-Universität zu Berlin; Book-Taylor-Straße2 12489 Berlin Germany
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28
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Wu XN, Li J, Schlangen M, Zhou S, González-Navarrete P, Schwarz H. Striking Doping Effects on Thermal Methane Activation Mediated by the Heteronuclear Metal Oxides [XAlO4].+(X=V, Nb, and Ta). Chemistry 2016; 23:788-792. [DOI: 10.1002/chem.201605226] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xiao-Nan Wu
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Germany
- Department of Chemistry; Fudan University; Shanghai 200433 P. R. China
| | - Jilai Li
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Germany
- Institute of Theoretical Chemistry; Jilin University; Changchun 130023 P. R. China
| | - Maria Schlangen
- 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
| | | | - Helmut Schwarz
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Germany
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29
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Comas-Vives A, Valla M, Copéret C, Sautet P. Cooperativity between Al Sites Promotes Hydrogen Transfer and Carbon-Carbon Bond Formation upon Dimethyl Ether Activation on Alumina. ACS CENTRAL SCIENCE 2015; 1:313-319. [PMID: 27162986 PMCID: PMC4827526 DOI: 10.1021/acscentsci.5b00226] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Indexed: 06/05/2023]
Abstract
The methanol-to-olefin (MTO) process allows the conversion of methanol/dimethyl ether into olefins on acidic zeolites via the so-called hydrocarbon pool mechanism. However, the site and mechanism of formation of the first carbon-carbon bond are still a matter of debate. Here, we show that the Lewis acidic Al sites on the 110 facet of γ-Al2O3 can readily activate dimethyl ether to yield CH4, alkenes, and surface formate species according to spectroscopic studies combined with a computational approach. The carbon-carbon forming step as well as the formation of methane and surface formate involves a transient oxonium ion intermediate, generated by a hydrogen transfer between surface methoxy species and coordinated methanol on adjacent Al sites. These results indicate that extra framework Al centers in acidic zeolites, which are associated with alumina, can play a key role in the formation of the first carbon-carbon bond, the initiation step of the industrial MTO process.
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Affiliation(s)
- Aleix Comas-Vives
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir
Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Maxence Valla
- 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
| | - Philippe Sautet
- CNRS,
Institut de Chimie de Lyon, École Normale Supérieure
de Lyon, Université de Lyon, 46 allée d’Italie, F-69364 Lyon Cedex 07, France
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30
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31
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Bali S, Leisen J, Foo GS, Sievers C, Jones CW. Aminosilanes grafted to basic alumina as CO2 adsorbents--role of grafting conditions on CO2 adsorption properties. CHEMSUSCHEM 2014; 7:3145-3156. [PMID: 25179814 DOI: 10.1002/cssc.201402373] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 06/30/2014] [Indexed: 06/03/2023]
Abstract
Solid oxide-supported amine sorbents for CO2 capture are amongst the most rapidly developing classes of sorbent materials for CO2 capture. Herein, basic γ supports are used as hosts for amine sites through the grafting of 3-aminopropyltrimethoxysilane to the alumina surface under a variety of conditions, yielding the expected surface-grafted alkylamine groups, as demonstrated by FTIR spectroscopy and (29)Si and (13)C cross-polarization magic-angle spinning (CPMAS NMR) spectroscopy. Grafting amine sites on the surface in the presence of water leads to a high density of amine sites on the surface whereas simultaneously creating a unique type of aluminum species on the surface, as demonstrated by both 1D and 2D (27)Al MAS NMR spectroscopy. The thus prepared sorbents result in higher CO2 adsorption capacities and amine efficiencies compared to sorbents prepared in the absence of water or similar amine loading sorbents prepared using silica supports. In situ FTIR spectra of the sorbents exposed to CO2 at various pressures show no distinct difference in the nature of the adsorbed CO2 species on alumina- versus silica-supported amines, whereas water adsorption isotherms show that the improved performance of the amine-grafted alumina support is not a consequence of retained water on the more hydrophobic aminoalumina materials. The findings demonstrate that amine-grafted, basic alumina materials can be tuned to be more efficient than the corresponding silica-supported materials at comparable amine loadings, further demonstrating that the properties of amine sites can be tuned by controlling or adjusting the support surface properties.
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Affiliation(s)
- Sumit Bali
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, NW, Atlanta, GA, 30332 (USA)
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32
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Conley MP, Delley MF, Siddiqi G, Lapadula G, Norsic S, Monteil V, Safonova OV, Copéret C. Polymerization of Ethylene by Silica-Supported Dinuclear CrIIISites through an Initiation Step Involving CH Bond Activation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308983] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Conley MP, Delley MF, Siddiqi G, Lapadula G, Norsic S, Monteil V, Safonova OV, Copéret C. Polymerization of Ethylene by Silica-Supported Dinuclear CrIIISites through an Initiation Step Involving CH Bond Activation. Angew Chem Int Ed Engl 2014; 53:1872-6. [DOI: 10.1002/anie.201308983] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Indexed: 11/08/2022]
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34
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Französische Chemiepreise 2012. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201208345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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35
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36
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Ma JB, Wang ZC, Schlangen M, He SG, Schwarz H. Zur Reaktion von YAlO3.+mit Methan bei Raumtemperatur: Dotierung macht Y2O3.+reaktiver und Al2O3.+selektiver. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201698] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Ma JB, Wang ZC, Schlangen M, He SG, Schwarz H. Thermal Reactions of YAlO3+.with Methane: Increasing the Reactivity of Y2O3+.and the Selectivity of Al2O3+.by Doping. Angew Chem Int Ed Engl 2012; 51:5991-4. [DOI: 10.1002/anie.201201698] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Indexed: 11/10/2022]
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38
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Wang ZC, Dietl N, Kretschmer R, Ma JB, Weiske T, Schlangen M, Schwarz H. Direct Conversion of Methane into Formaldehyde Mediated by [Al2O3].+ at Room Temperature. Angew Chem Int Ed Engl 2012; 51:3703-7. [DOI: 10.1002/anie.201200015] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Indexed: 11/11/2022]
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39
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Wang ZC, Dietl N, Kretschmer R, Ma JB, Weiske T, Schlangen M, Schwarz H. Direkte Umwandlung von Methan zu Formaldehyd durch kationisches [Al2O3].+ bei Raumtemperatur. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200015] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Catalytic CH Bond Activation at Nanoscale Lewis Acidic Aluminium Fluorides: H/D Exchange Reactions at Aromatic and Aliphatic Hydrocarbons. Chemistry 2011; 17:14385-8. [DOI: 10.1002/chem.201102853] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Indexed: 11/07/2022]
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