1
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Bie X, Pan Y, Wang X, Zhang S, Hu J, Yang X, Li Q, Zhang Y, Przekop RE, Zhang Y, Zhou H. NH 3-Induced Challenges in CO 2 Hydrogenation over the Cu/ZnO/Al 2O 3 Catalyst. JACS AU 2025; 5:1243-1257. [PMID: 40151266 PMCID: PMC11937992 DOI: 10.1021/jacsau.4c01097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2024] [Revised: 01/02/2025] [Accepted: 01/06/2025] [Indexed: 03/29/2025]
Abstract
Gas sources rich in CO2 derived from biomass/waste gasification, anaerobic digestion, or industrial carbon capture often contain impurities such as H2S, H2O, and NH3, which can significantly hinder catalyst performance. Here, we show the role of NH3 on the reverse water-gas shift (RWGS) reaction over a commercial Cu/ZnO/Al2O3 catalyst, examining its effects on both the catalytic activity and the catalyst structure. We found that NH3 reversibly decreases CO2 conversion immediately by suppressing carbonate hydrogenation and CO desorption. This effect intensifies with an increase in NH3 concentration but decreases at higher temperatures. However, prolonged exposure (over 100 h) to RWGS conditions in the presence of 1.4% NH3 leads to near-total and irreversible deactivation of the Cu/ZnO/Al2O3 catalyst. Under NH3 exposure, the catalyst loses Cu+ sites on the surface, causing a spatial separation of Cu and ZnO. Finally, to address this challenge, we propose a novel strategy to mitigate NH3 inhibition by decomposing NH3 into N2 and H2.
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Affiliation(s)
- Xuan Bie
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Yukun Pan
- State
Key
Laboratory of Chemical Engineering, East
China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xiaowei Wang
- State
Key
Laboratory of Chemical Engineering, East
China University of Science and Technology, Shanghai 200237, P. R. China
| | - Shiyu Zhang
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Jiahui Hu
- New Jersey
Institute of Technology, New Jersey 07102, United States
| | - Xiaoxiao Yang
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Qinghai Li
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
- Shanxi
Research
Institute for Clean Energy, Tsinghua University, Shanxi, Taiyuan 030000, P.R. China
| | - Yanguo Zhang
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
- Shanxi
Research
Institute for Clean Energy, Tsinghua University, Shanxi, Taiyuan 030000, P.R. China
| | - Robert E. Przekop
- Adam
Mickiewicz University, ul. Wieniawskiego 1, 61-712 Poznań, Poland
| | - Yayun Zhang
- State
Key
Laboratory of Chemical Engineering, East
China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hui Zhou
- Key Laboratory
for Thermal Science and Power Engineering of Ministry of Education,
Beijing Key Laboratory of CO2 Utilization and Reduction Technology,
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P.R. China
- Shanxi
Research
Institute for Clean Energy, Tsinghua University, Shanxi, Taiyuan 030000, P.R. China
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2
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Alves GAS, Pacholik G, Pollitt S, Wagner T, Rameshan R, Rameshan C, Föttinger K. Mn-promoted MoS 2 catalysts for CO 2 hydrogenation: enhanced methanol selectivity due to MoS 2/MnO x interfaces. Catal Sci Technol 2024; 14:1138-1147. [PMID: 38449728 PMCID: PMC10913851 DOI: 10.1039/d3cy01711g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/02/2024] [Indexed: 03/08/2024]
Abstract
Considering the alarming scenario of climate change, CO2 hydrogenation to methanol is considered a key process for phasing out fossil fuels by means of CO2 utilization. In this context, MoS2 catalysts have recently shown to be promising catalysts for this reaction, especially in the presence of abundant basal-plane sulfur vacancies and due to synergistic mechanisms with other phases. In this work, Mn-promoted MoS2 prepared by a hydrothermal method presents considerable selectivity for CO2 hydrogenation to methanol in comparison with pure MoS2 and other promoters such as K and Co. Interestingly, if CO is used as a carbon source for the reaction, methanol production is remarkably lower, which suggests the absence of a CO intermediate during CO2 hydrogenation to methanol. After optimization of synthesis parameters, a methanol selectivity of 64% is achieved at a CO2 conversion of 2.8% under 180 °C. According to material characterization by X-ray Diffraction and X-ray Absorption, the Mn promoter is present mainly in the form of MnO and MnCO3 phases, with the latter undergoing convertion to MnO upon H2 pretreatment. However, following exposure to reaction conditions, X-ray photoelectron spectroscopy suggests that higher oxidation states of Mn may be present at the surface, suggesting that the improved catalytic activity for CO2 hydrogenation to methanol arises from a synergy between MoS2 and MnOx at the catalyst surface.
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Affiliation(s)
- Gustavo A S Alves
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC/01 1060 Vienna Austria
| | - Gernot Pacholik
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC/01 1060 Vienna Austria
| | - Stephan Pollitt
- Paul Scherrer Institut (PSI) Forschungsstrasse 111 5232 Villigen Switzerland
| | - Tobias Wagner
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC/01 1060 Vienna Austria
| | - Raffael Rameshan
- Chair of Physical Chemistry, Montanuniversität Leoben Franz-Josef-Straße 18 8700 Leoben Austria
| | - Christoph Rameshan
- Chair of Physical Chemistry, Montanuniversität Leoben Franz-Josef-Straße 18 8700 Leoben Austria
| | - Karin Föttinger
- Institute of Materials Chemistry, TU Wien Getreidemarkt 9/BC/01 1060 Vienna Austria
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3
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Donphai W, Thepphankulngarm N, Chaisuwan T, Tanangteerapong D, Rood SC, Kongkachuichay P. Catalytic Performance of Copper and Ruthenium Loaded on N-Doped Modified PBZ-Derived Carbons for CO2 Hydrogenation. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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4
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Secka J, Pal A, Acquah FA, Mooers BHM, Karki AB, Mahjoub D, Fakhr MK, Wallace DR, Okada T, Toyooka N, Kuta A, Koduri N, Herndon D, Roberts KP, Wang Z, Hileman B, Rajagopal N, Hussaini SR. Coupling of acceptor-substituted diazo compounds and tertiary thioamides: synthesis of enamino carbonyl compounds and their pharmacological evaluation. RSC Adv 2022; 12:19431-19444. [PMID: 35865562 PMCID: PMC9256013 DOI: 10.1039/d2ra02415b] [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: 04/14/2022] [Accepted: 06/25/2022] [Indexed: 11/25/2022] Open
Abstract
This paper describes the synthesis of enamino carbonyl compounds by the copper(i)-catalyzed coupling of acceptor-substituted diazo compounds and tertiary thioamides. We plan to use this method to synthesize indolizidine (-)-237D analogs to find α6-selective antismoking agents. Therefore, we also performed in silico α6-nAchRs binding studies of selected products. Compounds with low root-mean-square deviation values showed more favorable binding free energies. We also report preliminary pharmacokinetic data on indolizidine (-)-237D and found it to have weak activity at CYP3A4. In addition, as enamino carbonyl compounds are also known for antimicrobial properties, we screened previously reported and new enamino carbonyl compounds for antibacterial, antimicrobial, and antifungal properties. Eleven compounds showed significant antimicrobial activities.
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Affiliation(s)
- Jim Secka
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Arpan Pal
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Francis A Acquah
- Department of Biochemistry and Molecular Biology, University of Oklahoma of Health Sciences Center Oklahoma City OK 73104 Unites States
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma Health Sciences Center Oklahoma City OK 73104 USA
- Laboratory of Biomolecular Structure and Function, University of Oklahoma of Health Sciences Center Oklahoma City OK 73104 USA
| | - Blaine H M Mooers
- Department of Biochemistry and Molecular Biology, University of Oklahoma of Health Sciences Center Oklahoma City OK 73104 Unites States
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma Health Sciences Center Oklahoma City OK 73104 USA
- Laboratory of Biomolecular Structure and Function, University of Oklahoma of Health Sciences Center Oklahoma City OK 73104 USA
| | - Anand B Karki
- Department of Biological Science, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Dania Mahjoub
- Department of Biological Science, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Mohamed K Fakhr
- Department of Biological Science, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - David R Wallace
- Department of Pharmacology and Physiology, Oklahoma State University Center for Health Sciences Tulsa Oklahoma 74107 USA
| | - Takuya Okada
- Faculty of Engineering, University of Toyama 3190 Gofuku Toyama 930-8555 Japan
| | - Naoki Toyooka
- Faculty of Engineering, University of Toyama 3190 Gofuku Toyama 930-8555 Japan
| | - Adama Kuta
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Naga Koduri
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Deacon Herndon
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Kenneth P Roberts
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Zhiguo Wang
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Bethany Hileman
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Nisha Rajagopal
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
| | - Syed R Hussaini
- Department of Chemistry and Biochemistry, The University of Tulsa 800 S. Tucker Drive Tulsa Oklahoma 74104 USA
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5
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Mapping the coke formation within a zeolite catalyst extrudate in space and time by operando computed X-ray diffraction tomography. J Catal 2021. [DOI: 10.1016/j.jcat.2021.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Abstract
The reforming of biofuels represents a promising technology for low carbon and renewable hydrogen production today. The core of the process is an active and stable catalyst, which can help to improve this technology and its efficiency. With this review, we aim to survey the more relevant literature on heterogeneous catalysts for the reforming of biofuels with improved sulfur tolerance. The review is structured into four main sections. Following the introduction, the fundamental aspects of sulfur poisoning are discussed. In the third section, the basic principles of the reforming of biofuels are reported, and finally, in the fourth section—the core of the review—recent progresses in the development of sulfur resistant catalysts are discussed, distinguishing the role of the metal (noble and non-noble) from that of the support.
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7
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Lais T, Lukashuk L, van de Water L, Hyde TI, Aramini M, Sankar G. Elucidation of copper environment in a Cu-Cr-Fe oxide catalyst through in situ high-resolution XANES investigation. Phys Chem Chem Phys 2021; 23:5888-5896. [PMID: 33660717 DOI: 10.1039/d0cp06468h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper containing materials are widely used in a range of catalytic applications. Here, we report the use of Cu K-edge high resolution XANES to determine the local site symmetry of copper ions during the thermal treatment of a Cu-Cr-Fe oxide catalyst. We exploited the Cu K-edge XANES spectral features, in particular the correlation between area under the pre-edge peak and its position to determine the local environment of Cu2+ ions. The information gained from this investigation rules out the presence of Cu2+ ions in a tetrahedral or square planar geometry, a mixture of these sites, or in a reduced oxidation state. Evidence is presented that the Cu2+ ions in the Cu-Cr-Fe oxide system are present in a distorted octahedral environment.
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Affiliation(s)
- Tahmin Lais
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
| | - Liliana Lukashuk
- Johnson Matthey, PO Box 1, Belasis Avenue, Billingham, Cleveland TS23 1LB, UK
| | - Leon van de Water
- Johnson Matthey, PO Box 1, Belasis Avenue, Billingham, Cleveland TS23 1LB, UK
| | - Timothy I Hyde
- Johnson Matthey, Blounts Court, Sonning Common, Reading, RG4 9NH, UK
| | - Matteo Aramini
- Diamond Light Source, Harwell Science & Innovation Campus, Oxfordshire OX11 0DE, UK
| | - Gopinathan Sankar
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
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8
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Stoica M, Sarac B, Spieckermann F, Wright J, Gammer C, Han J, Gostin PF, Eckert J, Löffler JF. X-ray Diffraction Computed Nanotomography Applied to Solve the Structure of Hierarchically Phase-Separated Metallic Glass. ACS NANO 2021; 15:2386-2398. [PMID: 33512138 DOI: 10.1021/acsnano.0c04851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The structure of matter at the nanoscale, in particular that of amorphous metallic alloys, is of vital importance for functionalization. With the availability of synchrotron radiation, it is now possible to visualize the internal features of metallic samples without physically destroying them. Methods based on computed tomography have recently been employed to explore the local features. Tomographic reconstruction, while it is relatively uncomplicated for crystalline materials, may generate undesired artifacts when applied to featureless amorphous or nanostructured metallic alloys. In this study we show that X-ray diffraction computed nanotomography can provide accurate details of the internal structure of a metallic glass. We demonstrate the power of the method by applying it to a hierarchically phase-separated amorphous sample with a small volume fraction of crystalline inclusions, focusing the X-ray beam to 500 nm and ensuring a sub-micrometer 2D resolution via the number of scans.
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Affiliation(s)
- Mihai Stoica
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Baran Sarac
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences (ÖAW), 8700 Leoben, Austria
| | - Florian Spieckermann
- Chair of Materials Physics, Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria
| | - Jonathan Wright
- European Synchrotron Radiation Facility (ESRF), 38042 Grenoble, France
| | - Christoph Gammer
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences (ÖAW), 8700 Leoben, Austria
| | - Junhee Han
- Korea Institute for Rare Metals (KIRAM), Korea Institute of Industrial Technology (KITECH), Yeonsu-Gu, 21999 Incheon, South Korea
| | - Petre F Gostin
- School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Jürgen Eckert
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences (ÖAW), 8700 Leoben, Austria
- Chair of Materials Physics, Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria
| | - Jörg F Löffler
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
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9
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Vamvakeros A, Coelho AA, Matras D, Dong H, Odarchenko Y, Price SWT, Butler KT, Gutowski O, Dippel AC, Zimmermann M, Martens I, Drnec J, Beale AM, Jacques SDM. DLSR: a solution to the parallax artefact in X-ray diffraction computed tomography data. J Appl Crystallogr 2020. [DOI: 10.1107/s1600576720013576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A new tomographic reconstruction algorithm is presented, termed direct least-squares reconstruction (DLSR), which solves the well known parallax problem in X-ray-scattering-based experiments. The parallax artefact arises from relatively large samples where X-rays, scattered from a scattering angle 2θ, arrive at multiple detector elements. This phenomenon leads to loss of physico-chemical information associated with diffraction peak shape and position (i.e. altering the calculated crystallite size and lattice parameter values, respectively) and is currently the major barrier to investigating samples and devices at the centimetre level (scale-up problem). The accuracy of the DLSR algorithm has been tested against simulated and experimental X-ray diffraction computed tomography data using the TOPAS software.
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10
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Real-time multi-length scale chemical tomography of fixed bed reactors during the oxidative coupling of methane reaction. J Catal 2020. [DOI: 10.1016/j.jcat.2020.03.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Schühle P, Schmidt M, Schill L, Riisager A, Wasserscheid P, Albert J. Influence of gas impurities on the hydrogenation of CO 2 to methanol using indium-based catalysts. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00946f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the performance of an In2O3/ZrO2 catalyst for hydrogenation of CO2 to methanol is reported in the presence of typical impurities of industrial CO2 feed gas streams.
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Affiliation(s)
- Patrick Schühle
- Institute of Chemical Reaction Engineering
- Friedrich–Alexander University Erlangen–Nürnberg
- 91058 Erlangen
- Germany
| | - Maximilian Schmidt
- Institute of Chemical Reaction Engineering
- Friedrich–Alexander University Erlangen–Nürnberg
- 91058 Erlangen
- Germany
| | - Leonhard Schill
- Centre for Catalysis and Sustainable Chemistry
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kgs. Lyngby
- Denmark
| | - Anders Riisager
- Centre for Catalysis and Sustainable Chemistry
- Department of Chemistry
- Technical University of Denmark
- DK-2800 Kgs. Lyngby
- Denmark
| | - Peter Wasserscheid
- Institute of Chemical Reaction Engineering
- Friedrich–Alexander University Erlangen–Nürnberg
- 91058 Erlangen
- Germany
| | - Jakob Albert
- Institute of Chemical Reaction Engineering
- Friedrich–Alexander University Erlangen–Nürnberg
- 91058 Erlangen
- Germany
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12
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Hao X, Zhang R, Ling L, Wang B. Insight into the diffusion mechanism of Cu cluster over Cu(111) surface: Effect of syngas and H2S atmosphere on Cu diffusion. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2019.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Yue Y, Wang B, Sheng G, Lai H, Wang S, Chen Z, Hu ZT, Zhao J, Li X. An ultra-high H2S-resistant gold-based imidazolium ionic liquid catalyst for acetylene hydrochlorination. NEW J CHEM 2019. [DOI: 10.1039/c9nj01205b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhancement of the sulfur resistance of gold-based catalysts is significantly relevant and highly desirable for the development and large-scale applications of these catalysts.
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Affiliation(s)
- Yuxue Yue
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Bolin Wang
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Gangfeng Sheng
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Huixia Lai
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Saisai Wang
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Zhi Chen
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Zhong-Ting Hu
- Department of Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Jia Zhao
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
| | - Xiaonian Li
- Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology
- Hangzhou
- People's Republic of China
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14
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Schittkowski J, Ruland H, Laudenschleger D, Girod K, Kähler K, Kaluza S, Muhler M, Schlögl R. Methanol Synthesis from Steel Mill Exhaust Gases: Challenges for the Industrial Cu/ZnO/Al2O3Catalyst. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201800017] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Julian Schittkowski
- Max Planck Institute for Chemical Energy Conversion,; Stiftstraße 34 - 36 45470 Mülheim an der Ruhr Germany
| | - Holger Ruland
- Max Planck Institute for Chemical Energy Conversion,; Stiftstraße 34 - 36 45470 Mülheim an der Ruhr Germany
| | - Daniel Laudenschleger
- Ruhr University Bochum; Laboratory of Industrial Chemistry; Universitätsstraße 150 44801 Bochum Germany
| | - Kai Girod
- Fraunhofer UMSICHT; Osterfelder Straße 3 46047 Oberhausen Germany
| | - Kevin Kähler
- Max Planck Institute for Chemical Energy Conversion,; Stiftstraße 34 - 36 45470 Mülheim an der Ruhr Germany
| | - Stefan Kaluza
- Fraunhofer UMSICHT; Osterfelder Straße 3 46047 Oberhausen Germany
| | - Martin Muhler
- Ruhr University Bochum; Laboratory of Industrial Chemistry; Universitätsstraße 150 44801 Bochum Germany
| | - Robert Schlögl
- Max Planck Institute for Chemical Energy Conversion,; Stiftstraße 34 - 36 45470 Mülheim an der Ruhr Germany
- Max Planck Society; Fritz Haber Institute; Faradayweg 4 - 6 14195 Berlin Germany
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15
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Permyakov E, Dorokhov V, Maximov V, Nikulshin P, Pimerzin A, Kogan V. Computational and experimental study of the second metal effect on the structure and properties of bi-metallic MeMoS-sites in transition metal sulfide catalysts. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.10.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Oracko T, Jaquish R, Losovyj YB, Morgan DG, Pink M, Stein BD, Doluda VY, Tkachenko OP, Shifrina ZB, Grigoriev ME, Sidorov AI, Sulman EM, Bronstein LM. Metal-Ion Distribution and Oxygen Vacancies That Determine the Activity of Magnetically Recoverable Catalysts in Methanol Synthesis. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34005-34014. [PMID: 28910529 DOI: 10.1021/acsami.7b11643] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Here, we report on the development of novel Zn-, Zn-Cr-, and Zn-Cu-containing catalysts using magnetic silica (Fe3O4-SiO2) as the support. Transmission electron microscopy, powder X-ray diffraction, and X-ray photoelectron spectroscopy (XPS) showed that the iron oxide nanoparticles are located in mesoporous silica pores and the magnetite (spinel) structure remains virtually unchanged despite the incorporation of Zn and Cr. According to XPS data, the Zn and Cr species are intermixed within the magnetite structure. In the case of the Zn-Cu-containing catalysts, a separate Cu2O phase was also observed along with the spinel structure. The catalytic activity of these catalysts was tested in methanol synthesis from syngas (CO + H2). The catalytic experiments showed an improved catalytic performance of Zn- and Zn-Cr-containing magnetic silicas compared to that of the ZnO-SiO2 catalyst. The best catalytic activity was obtained for the Zn-Cr-containing magnetic catalyst prepared with 1 wt % Zn and Cr each. X-ray absorption spectroscopy demonstrated the presence of oxygen vacancies near Fe and Zn in Zn-containing, and even more in Zn-Cr-containing, magnetic silica (including oxygen vacancies near Cr ions), revealing a correlation between the catalytic properties and oxygen vacancies. The easy magnetic recovery, robust synthetic procedure, and high catalytic activity make these catalysts promising for practical applications.
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Affiliation(s)
| | | | | | | | | | | | - Valentin Yu Doluda
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Olga P Tkachenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , 47 Leninsky Pr., Moscow 119991, Russia
| | - Zinaida B Shifrina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991, Russia
| | - Maxim E Grigoriev
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Alexander I Sidorov
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Esther M Sulman
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Lyudmila M Bronstein
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991, Russia
- Faculty of Science, Department of Physics, King Abdulaziz University , Jeddah 21589, Saudi Arabia
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17
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Quantifying the dominant factors in Cu catalyst deactivation during glycerol hydrogenolysis. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.05.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Baird N, Dittmar JW, Losovyj YB, Pink M, Morgan DG, Stein BD, Torozova AS, Krasnova IY, Grigoriev ME, Sidorov AI, Sulman MG, Shifrina ZB, Bronstein LM. Cr-Containing Magnetic Oxides in a Methanol Synthesis: Does Cr Ion Distribution Matter? ChemistrySelect 2017. [DOI: 10.1002/slct.201700982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nicholas Baird
- Indiana University; Department of Chemistry; Bloomington, IN 47405 USA
| | - Jasper W. Dittmar
- Indiana University; Department of Chemistry; Bloomington, IN 47405 USA
| | | | - Maren Pink
- Indiana University; Department of Chemistry; Bloomington, IN 47405 USA
| | - David Gene Morgan
- Indiana University; Department of Chemistry; Bloomington, IN 47405 USA
| | - Barry D. Stein
- Indiana University; Department of Biology; Bloomington, IN 47405 USA
| | - Alexandra S. Torozova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Irina Yu. Krasnova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Maxim E. Grigoriev
- Tver State Technical University; Department of Biotechnology and Chemistry; 22 A. Nikitina St. Tver 170026 Russia
| | - Alexander I. Sidorov
- Tver State Technical University; Department of Biotechnology and Chemistry; 22 A. Nikitina St. Tver 170026 Russia
| | - Mikhail G. Sulman
- Tver State Technical University; Department of Biotechnology and Chemistry; 22 A. Nikitina St. Tver 170026 Russia
| | - Zinaida B. Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Lyudmila M. Bronstein
- Indiana University; Department of Chemistry; Bloomington, IN 47405 USA
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
- King Abdulaziz University, Faculty of Science; Department of Physics; Jeddah Saudi Arabia
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19
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Price SWT, Martin DJ, Parsons AD, Sławiński WA, Vamvakeros A, Keylock SJ, Beale AM, Mosselmans JFW. Chemical imaging of Fischer-Tropsch catalysts under operating conditions. SCIENCE ADVANCES 2017; 3:e1602838. [PMID: 28345057 PMCID: PMC5357128 DOI: 10.1126/sciadv.1602838] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/01/2017] [Indexed: 05/14/2023]
Abstract
Although we often understand empirically what constitutes an active catalyst, there is still much to be understood fundamentally about how catalytic performance is influenced by formulation. Catalysts are often designed to have a microstructure and nanostructure that can influence performance but that is rarely considered when correlating structure with function. Fischer-Tropsch synthesis (FTS) is a well-known and potentially sustainable technology for converting synthetic natural gas ("syngas": CO + H2) into functional hydrocarbons, such as sulfur- and aromatic-free fuel and high-value wax products. FTS catalysts typically contain Co or Fe nanoparticles, which are often optimized in terms of size/composition for a particular catalytic performance. We use a novel, "multimodal" tomographic approach to studying active Co-based catalysts under operando conditions, revealing how a simple parameter, such as the order of addition of metal precursors and promoters, affects the spatial distribution of the elements as well as their physicochemical properties, that is, crystalline phase and crystallite size during catalyst activation and operation. We show in particular how the order of addition affects the crystallinity of the TiO2 anatase phase, which in turn leads to the formation of highly intergrown cubic close-packed/hexagonal close-packed Co nanoparticles that are very reactive, exhibiting high CO conversion. This work highlights the importance of operando microtomography to understand the evolution of chemical species and their spatial distribution before any concrete understanding of impact on catalytic performance can be realized.
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Affiliation(s)
- Stephen W. T. Price
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
- Corresponding author. (S.W.T.P.); (A.M.B.)
| | - David J. Martin
- Research Complex at Harwell, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0FA, U.K
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Aaron D. Parsons
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
| | - Wojciech A. Sławiński
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, U.K
| | - Antonios Vamvakeros
- Research Complex at Harwell, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0FA, U.K
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Stephen J. Keylock
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
| | - Andrew M. Beale
- Research Complex at Harwell, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0FA, U.K
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
- Finden Limited, The Workstation Merchant House, 5 East St. Helen Street, Abingdon, Oxfordshire OX14 5EG, U.K
- Corresponding author. (S.W.T.P.); (A.M.B.)
| | - J. Frederick W. Mosselmans
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
- School of Earth and Environmental Sciences, University of Manchester, Manchester M13 9PL, U.K
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20
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Baird N, Dittmar JW, Losovyj YB, Morgan DG, Stein BD, Pink M, Kuchkina NV, Serkova ES, Lependina OL, Grigoriev ME, Sidorov AI, Sulman MG, Shifrina ZB, Bronstein LM. Enhancing the Catalytic Activity of Zn-Containing Magnetic Oxides in a Methanol Synthesis: Identifying the Key Factors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2285-2294. [PMID: 28029247 DOI: 10.1021/acsami.6b12115] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A new family of Ni-, Co-, and Cr-doped Zn-containing magnetic oxide nanoparticles (NPs) stabilized by polyphenylquinoxaline (PPQ) and hyperbranched pyridylphenylene polymer (PPP) has been developed. These NPs have been synthesized by thermal decomposition of Zn and doping metal acetylacetonates in the reaction solution of preformed magnetite NPs, resulting in single-crystal NPs with spinel structure. For the PPQ-capped NPs, it was demonstrated that all three types of metal species (Fe, Zn, and a doping metal) reside within the same NPs, the surface of which is enriched with Zn and a doping metal, while the deeper layers are enriched with Fe. The Cr-doped NPs at the high Cr loading are an exception due to favored deposition of Cr on magnetite located in the NP depth. The PPP-capped NPs exhibit similar morphology and crystallinity; however, the detailed study of the NP composition was barred due to the high PPP amount retained on the NP surface. The catalyst testing in syngas conversion to methanol demonstrated outstanding catalytic properties of doped Zn-containing magnetic oxides, whose activities are dependent on the doping metal content and on the stabilizing polymer. The PPP stabilization allows for better access to the catalytic species due to the open and rigid polymer architecture and most likely optimized distribution of doping species. Repeat experiments carried out after magnetic separation of catalysts from the reaction mixture showed excellent catalyst stability even after five consecutive catalytic runs.
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Affiliation(s)
- Nicholas Baird
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Jasper W Dittmar
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Yaroslav B Losovyj
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - David Gene Morgan
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Barry D Stein
- Department of Biology, Indiana University , Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Nina V Kuchkina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Elena S Serkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Olga L Lependina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Maxim E Grigoriev
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Alexander I Sidorov
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Mikhail G Sulman
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Zinaida B Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Lyudmila M Bronstein
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
- Faculty of Science, Department of Physics, King Abdulaziz University , Jeddah, Saudi Arabia
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21
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Liu C, Peng J, Ma A, Zhang L, Li J. Study on non-isothermal kinetics of the thermal desorption of mercury from spent mercuric chloride catalyst. JOURNAL OF HAZARDOUS MATERIALS 2017; 322:325-333. [PMID: 27776854 DOI: 10.1016/j.jhazmat.2016.09.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 08/26/2016] [Accepted: 09/27/2016] [Indexed: 05/24/2023]
Abstract
Kinetics of the thermal desorption of mercury from spent mercury chloride catalysts were investigated using non-isothermal thermal analysis technique. Complex mercury species absorbed on waste catalysts were revealed by sequential extraction procedure. A scheme of six reactions was applied to elucidate mercury desorption kinetics. Activation energy estimated by model-free isoconversional methods is a slightly increasing function of conversion, implying a variation in the mechanism controlling mercury desorption. Average value of apparent activation energy (116.32kJ/mol) calculated by isoconversional Starink method was used to determine reaction mechanism using model-fitting and z(α) master method. One dimensional diffusion appears to govern mercury desorption process in the conversion range of 10%-40%, and then the reaction kinetic is controlled by two and three dimensional diffusion at greater conversion.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
| | - Jinhui Peng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
| | - Aiyuan Ma
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China.
| | - Jing Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
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22
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CO2 hydrogenation to methanol using Cu-Zn catalyst supported on reduced graphene oxide nanosheets. J CO2 UTIL 2016. [DOI: 10.1016/j.jcou.2016.07.002] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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23
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Vamvakeros A, Jacques SDM, Di Michiel M, Senecal P, Middelkoop V, Cernik RJ, Beale AM. Interlaced X-ray diffraction computed tomography. J Appl Crystallogr 2016; 49:485-496. [PMID: 27047305 PMCID: PMC4815873 DOI: 10.1107/s160057671600131x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 01/20/2016] [Indexed: 11/24/2022] Open
Abstract
An X-ray diffraction computed tomography data-collection strategy that allows, post experiment, a choice between temporal and spatial resolution is reported. This strategy enables time-resolved studies on comparatively short timescales, or alternatively allows for improved spatial resolution if the system under study, or components within it, appear to be unchanging. The application of the method for studying an Mn-Na-W/SiO2 fixed-bed reactor in situ is demonstrated. Additionally, the opportunities to improve the data-collection strategy further, enabling post-collection tuning between statistical, temporal and spatial resolutions, are discussed. In principle, the interlaced scanning approach can also be applied to other pencil-beam tomographic techniques, like X-ray fluorescence computed tomography, X-ray absorption fine structure computed tomography, pair distribution function computed tomography and tomographic scanning transmission X-ray microscopy.
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Affiliation(s)
- Antonios Vamvakeros
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England
| | - Simon D. M. Jacques
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England
- School of Materials, University of Manchester, Manchester M13 9PL, England
| | | | - Pierre Senecal
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England
| | - Vesna Middelkoop
- Flemish Institute for Technological Research, VITO NV, Boeretang 200, 2400 Mol, Belgium
| | - Robert J. Cernik
- School of Materials, University of Manchester, Manchester M13 9PL, England
| | - Andrew M. Beale
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England
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24
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Vamvakeros A, Jacques SDM, Middelkoop V, Di Michiel M, Egan CK, Ismagilov IZ, Vaughan GBM, Gallucci F, van Sint Annaland M, Shearing PR, Cernik RJ, Beale AM. Real time chemical imaging of a working catalytic membrane reactor during oxidative coupling of methane. Chem Commun (Camb) 2015; 51:12752-5. [PMID: 26041252 DOI: 10.1039/c5cc03208c] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the results from an operando XRD-CT study of a working catalytic membrane reactor for the oxidative coupling of methane. These results reveal the importance of the evolving solid state chemistry during catalytic reaction, particularly the chemical interaction between the catalyst and the oxygen transport membrane.
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Affiliation(s)
- A Vamvakeros
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
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25
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Beale AM, Gao F, Lezcano-Gonzalez I, Peden CHF, Szanyi J. Recent advances in automotive catalysis for NOx emission control by small-pore microporous materials. Chem Soc Rev 2015; 44:7371-405. [PMID: 25913215 DOI: 10.1039/c5cs00108k] [Citation(s) in RCA: 456] [Impact Index Per Article: 45.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ever increasing demand to develop highly fuel efficient engines coincides with the need to minimize air pollution originating from the exhaust gases of internal combustion engines. Dramatically improved fuel efficiency can be achieved at air-to-fuel ratios much higher than stoichiometric. In the presence of oxygen in large excess, however, traditional three-way catalysts are unable to reduce NOx. Among the number of lean-NOx reduction technologies, selective catalytic reduction (SCR) of NOx by NH3 over Cu- and Fe-ion exchanged zeolite catalysts has been extensively studied over the past 30+ years. Despite the significant advances in developing a viable practical zeolite-based catalyst for lean NOx reduction, the insufficient hydrothermal stabilities of the zeolite structures considered cast doubts about their real-world applicability. During the past decade renewed interest in zeolite-based lean NOx reduction was spurred by the discovery of the very high activity of Cu-SSZ-13 (and the isostructural Cu-SAPO-34) in the NH3-SCR of NOx. These new, small-pore zeolite-based catalysts not only exhibited very high NOx conversion and N2 selectivity, but also exhibited exceptionally high hydrothermal stability at high temperatures. In this review we summarize the key discoveries of the past ∼5 years that led to the introduction of these catalysts into practical applications. This review first briefly discusses the structure and preparation of the CHA structure-based zeolite catalysts, and then summarizes the key learnings of the rather extensive (but not complete) characterisation work. Then we summarize the key findings of reaction kinetic studies, and provide some mechanistic details emerging from these investigations. At the end of the review we highlight some of the issues that still need to be addressed in automotive exhaust control catalysis.
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Affiliation(s)
- A M Beale
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
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26
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Progress towards five dimensional diffraction imaging of functional materials under process conditions. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.05.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Benito P, de Nolf W, Nuyts G, Monti M, Fornasari G, Basile F, Janssens K, Ospitali F, Scavetta E, Tonelli D, Vaccari A. Role of Coating-Metallic Support Interaction in the Properties of Electrosynthesized Rh-Based Structured Catalysts. ACS Catal 2014. [DOI: 10.1021/cs501079k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricia Benito
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Wout de Nolf
- Department
of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Antwerp, Belgium
| | - Gert Nuyts
- Department
of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Antwerp, Belgium
| | - Marco Monti
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Giuseppe Fornasari
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Francesco Basile
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Koen Janssens
- Department
of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Antwerp, Belgium
| | - Francesca Ospitali
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Erika Scavetta
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Domenica Tonelli
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
| | - Angelo Vaccari
- Dipartimento
di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM -Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Bologna, Italy
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28
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Newton MA, Di Michiel M, Ferri D, Fernàndez-Garcia M, Beale AM, Jacques SDM, Chupas PJ, Chapman KW. Catalytic Adventures in Space and Time Using High Energy X-rays. CATALYSIS SURVEYS FROM ASIA 2014. [DOI: 10.1007/s10563-014-9173-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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