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Wang L, Liu X, Wan L, Gao Y, Wang X, Liu J, Tan S, Guo Q, Zhao W, Hu W, Li Q, Yang J. Excitonic Effects of the Excited-State Photocatalytic Reaction at the Molecule/Metal Oxide Interface. J Phys Chem Lett 2024; 15:2096-2104. [PMID: 38358755 DOI: 10.1021/acs.jpclett.3c03075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Excitonic effects caused by the Coulomb interaction between electrons and holes play a crucial role in photocatalysis at the molecule/metal oxide interface. As an ideal model for investigating the excitonic effect, coadsorption and photodissociation of water and methanol molecules on titanium dioxide involve complex ground-state thermalcatalytic and excited-state photocatalytic reaction processes. Herein, we systemically investigate the excited-state electronic structures of the coadsorption of H2O and CH3OH molecules on a rutile TiO2(110) surface by linear-response time-dependent density functional theory calculations and probe the reaction path for generating HCOOH or CO2, from ground-state and excited-state perspectives. The reaction barriers in excited-state calculations are significantly different from those in ground-state calculations during three processes, with the largest decrease being 0.94 eV for the Ti5c-O-CH2-O-Ti5c formation process.
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Affiliation(s)
- Lei Wang
- Department of Chemical Physics, and Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaofeng Liu
- School of Physics, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Lingyun Wan
- Hefei National Research Center for Physical Sciences at the Microscale and Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yunzhi Gao
- Hefei National Research Center for Physical Sciences at the Microscale and Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaoning Wang
- Department of Chemical Physics, and Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jie Liu
- Hefei National Research Center for Physical Sciences at the Microscale and Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shijing Tan
- Hefei National Research Center for Physical Sciences at the Microscale and Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qing Guo
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Wenhui Zhao
- Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Wei Hu
- Hefei National Research Center for Physical Sciences at the Microscale and Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qunxiang Li
- Department of Chemical Physics, and Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinlong Yang
- Department of Chemical Physics, and Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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2
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Single-atom catalysts for proton exchange membrane fuel cell: anode anti-poisoning & characterization technology. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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3
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Liu Y, Chen Y, Jiang W, Kong T, Camargo PHC, Gao C, Xiong Y. Highly Efficient and Selective Photocatalytic Nonoxidative Coupling of Methane to Ethylene over Pd-Zn Synergistic Catalytic Sites. RESEARCH 2022; 2022:9831340. [DOI: 10.34133/2022/9831340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/10/2022] [Indexed: 11/11/2022]
Abstract
Photocatalytic nonoxidative coupling of CH4 to multicarbon (C2+) hydrocarbons (e.g., C2H4) and H2 under ambient conditions provides a promising energy-conserving approach for utilization of carbon resource. However, as the methyl intermediates prefer to undergo self-coupling to produce ethane, it is a challenging task to control the selective conversion of CH4 to higher value-added C2H4. Herein, we adopt a synergistic catalysis strategy by integrating Pd-Zn active sites on visible light-responsive defective WO3 nanosheets for synergizing the adsorption, activation, and dehydrogenation processes in CH4 to C2H4 conversion. Benefiting from the synergy, our model catalyst achieves a remarkable C2+ compounds yield of 31.85 μmol·g-1·h-1 with an exceptionally high C2H4 selectivity of 75.3% and a stoichiometric H2 evolution. In situ spectroscopic studies reveal that the Zn sites promote the adsorption and activation of CH4 molecules to generate methyl and methoxy intermediates with the assistance of lattice oxygen, while the Pd sites facilitate the dehydrogenation of methoxy to methylene radicals for producing C2H4 and suppress overoxidation. This work demonstrates a strategy for designing efficient photocatalysts toward selective coupling of CH4 to higher value-added chemicals and highlights the importance of synergistic active sites to the synergy of key steps in catalytic reactions.
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Affiliation(s)
- Yanduo Liu
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
- Institute of Energy Hefei Comprehensive National Science Center, Hefei, Anhui 230031, China
| | - Yihong Chen
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wenbin Jiang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tingting Kong
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | | | - Chao Gao
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yujie Xiong
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
- Institute of Energy Hefei Comprehensive National Science Center, Hefei, Anhui 230031, China
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
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Tang Z, Zhang T, Luo D, Wang Y, Hu Z, Yang RT. Catalytic Combustion of Methane: From Mechanism and Materials Properties to Catalytic Performance. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ziyu Tang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’anShaanxi710049, China
| | - Tao Zhang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’anShaanxi710049, China
| | - Decun Luo
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’anShaanxi710049, China
| | - Yongjie Wang
- School of Science, Harbin Institute of Technology, Shenzhen518055, China
| | - Zhun Hu
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’anShaanxi710049, China
| | - Ralph T. Yang
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow, 2300 Hayward Street, Ann Arbor, Michigan48109-2136, United States
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Feng Y, Wei L, Wang Z, Liu Y, Dai H, Wang C, Hsi HC, Duan E, Peng Y, Deng J. Boosting catalytic stability for VOCs removal by constructing PtCu alloy structure with superior oxygen activation behavior. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129612. [PMID: 35872456 DOI: 10.1016/j.jhazmat.2022.129612] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/01/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
The elimination of volatile organic compounds (VOCs) emitted from the process of industry production is of great significance to improve the atmospheric environment. Herein the catalytic oxidation of the toluene and iso-hexane mixture, as the typical components from furniture paint industry, and the enhancement in the catalytic stability for toluene oxidation were investigated in detail. The formation rate of active oxygen species was very important for the development of the catalyst with high catalytic stability. Compared with the Pt/M catalyst, the Pt-Cu/M catalyst owned stronger ability of VOCs adsorption and gaseous oxygen activation by introducing additional sites for activating O2. The Langmuir-Hinshelwood (adsorbed oxygen) and Mars-van Krevelen (lattice oxygen) mechanism existed in toluene oxidation over the present Pt/M and Pt-Cu/M catalysts, respectively. The change in the involved active oxygen species during toluene oxidation was resulted from the Pt-Cu alloy structure. In addition to the adsorption of O2, a part of active lattice oxygen species can also be replenished by the migration of bulk lattice oxygen over Pt-Cu/M. With a rise in the reaction temperature, weakly adsorbed iso-hexane could be timely reacted with the more active lattice oxygen species to keep the catalytic stability over the Pt/M and Pt-Cu/M catalysts. Generally, we not only prepared a promising material for the catalytic removal of VOCs from the furniture paint industry, but also provided a new strategy for the generation of active oxygen species, making the catalyst exhibit high catalytic oxidation stability.
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Affiliation(s)
- Yuan Feng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Lu Wei
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Zhiwei Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Yuxi Liu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Can Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Hsing-Cheng Hsi
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Erhong Duan
- School of Environmental Science and Engineering, Hebei University of Science and Technology, 26th Yuxiang Street, Shijiazhuang, Hebei 050018, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiguang Deng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
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6
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Du Y, Xiao G, Guo Z, Lin B, Fu M, Ye D, Hu Y. A high-performance and stable Cu/Beta for adsorption-catalytic oxidation in-situ destruction of low concentration toluene. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155288. [PMID: 35429572 DOI: 10.1016/j.scitotenv.2022.155288] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/02/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Finding a cost-effective treatment to remove of low concentrations of volatile organic compounds (VOCs) is still a challenge. In this study, a Cu/Beta material was developed for in situ adsorption-catalytic oxidation of low concentrations of toluene. The results showed that the addition of Cu enhanced the adsorption and catalytic oxidation of toluene by Beta zeolite. Cu7/Beta with a Cu+ ratio of close to 50% performed best. The high adsorption of Cu7/Beta was mainly attributed to the abundant Cu+ species and the micro-mesoporous structure of the Beta zeolite, and the high catalytic oxidation was attributed to the lattice oxygen in the uniformly dispersed CuO. Finally, the adsorption intermediates and reaction pathways in the catalytic oxidation of toluene were clarified using XPS and DRIFTS spectra. This work provides new strategies for the development of efficient and stable adsorption-catalytic oxidation in situ destruction materials.
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Affiliation(s)
- Yueying Du
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Gaofei Xiao
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Ziyang Guo
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Beilong Lin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Mingli Fu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China
| | - Yun Hu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
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7
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Gao Y, Jiang M, Yang L, Li Z, Tian FX, He Y. Recent progress of catalytic methane combustion over transition metal oxide catalysts. Front Chem 2022; 10:959422. [PMID: 36003612 PMCID: PMC9393236 DOI: 10.3389/fchem.2022.959422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
Methane (CH4) is one of the cleanest fossil fuel resources and is playing an increasingly indispensable role in our way to carbon neutrality, by providing less carbon-intensive heat and electricity worldwide. On the other hand, the atmospheric concentration of CH4 has raced past 1,900 ppb in 2021, almost triple its pre-industrial levels. As a greenhouse gas at least 86 times as potent as carbon dioxide (CO2) over 20 years, CH4 is becoming a major threat to the global goal of deviating Earth temperature from the +2°C scenario. Consequently, all CH4-powered facilities must be strictly coupled with remediation plans for unburned CH4 in the exhaust to avoid further exacerbating the environmental stress, among which catalytic CH4 combustion (CMC) is one of the most effective strategies to solve this issue. Most current CMC catalysts are noble-metal-based owing to their outstanding C–H bond activation capability, while their high cost and poor thermal stability have driven the search for alternative options, among which transition metal oxide (TMO) catalysts have attracted extensive attention due to their Earth abundance, high thermal stability, variable oxidation states, rich acidic and basic sites, etc. To date, many TMO catalysts have shown comparable catalytic performance with that of noble metals, while their fundamental reaction mechanisms are explored to a much less extent and remain to be controversial, which hinders the further optimization of the TMO catalytic systems. Therefore, in this review, we provide a systematic compilation of the recent research advances in TMO-based CMC reactions, together with their detailed reaction mechanisms. We start with introducing the scientific fundamentals of the CMC reaction itself as well as the unique and desirable features of TMOs applied in CMC, followed by a detailed introduction of four different kinetic reaction models proposed for the reactions. Next, we categorize the TMOs of interests into single and hybrid systems, summarizing their specific morphology characterization, catalytic performance, kinetic properties, with special emphasis on the reaction mechanisms and interfacial properties. Finally, we conclude the review with a summary and outlook on the TMOs for practical CMC applications. In addition, we also further prospect the enormous potentials of TMOs in producing value-added chemicals beyond combustion, such as direct partial oxidation to methanol.
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Affiliation(s)
- Yuan Gao
- UM-SJTU Joint Institute, Shanghai Jiaotong University, Shanghai, China
| | - Mingxin Jiang
- UM-SJTU Joint Institute, Shanghai Jiaotong University, Shanghai, China
| | - Liuqingqing Yang
- UM-SJTU Joint Institute, Shanghai Jiaotong University, Shanghai, China
| | - Zhuo Li
- UM-SJTU Joint Institute, Shanghai Jiaotong University, Shanghai, China
| | - Fei-Xiang Tian
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yulian He
- UM-SJTU Joint Institute, Shanghai Jiaotong University, Shanghai, China
- Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Yulian He,
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8
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Dreyer M, Hagemann U, Heidelmann M, Budiyanto E, Cosanne N, Ortega KF, Najafishirtari S, Hartmann N, Tüysüz H, Behrens M. Beneficial Effects of Low Iron Contents on Cobalt‐Containing Spinel Catalysts in the Gas Phase 2‐Propanol Oxidation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200472] [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)
- Maik Dreyer
- University of Duisburg-Essen: Universitat Duisburg-Essen Faculty of Chemistry GERMANY
| | - Ulrich Hagemann
- University of Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Markus Heidelmann
- University of Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Eko Budiyanto
- Max-Planck-Institute für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Nicolas Cosanne
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute of Inorganic Chemistry GERMANY
| | - Klaus Friedel Ortega
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institut of Inorganic Chemistry GERMANY
| | - Sharif Najafishirtari
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute of Inorganic Chemistry GERMANY
| | - Nils Hartmann
- Universität Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Harun Tüysüz
- Max-Planck-Institute für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Malte Behrens
- Kiel University Institute of Inorganic Chemistry Max-Eyth-Str. 2 24118 Kiel GERMANY
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9
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Mirasgari M, Alavi SM, Rezaei M. Effects of partial substitution of Cu by Mn and Co in LaCu0.5Ni0.5O3 catalyst synthesized by mechanochemical method in the total oxidation of methane. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04775-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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10
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Shan C, Zhang Y, Zhao Q, Fu K, Zheng Y, Han R, Liu C, Ji N, Wang W, Liu Q. Acid Etching-Induced In Situ Growth of λ-MnO 2 over CoMn Spinel for Low-Temperature Volatile Organic Compound Oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10381-10390. [PMID: 35709483 DOI: 10.1021/acs.est.2c02483] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Surface lattice oxygen is crucial to the degradation of volatile organic compounds (VOCs) over transition metal oxides according to the Mars-van Krevelen mechanism. Herein, λ-MnO2 in situ grown on the surface of CoMn spinel was prepared by acid etching of corresponding spinel catalysts (CoMn-Hx-Ty) for VOC oxidation. Experimental and relevant theoretical exploration revealed that acid etching on the CoMn spinel surface could decrease the electron cloud density around the O atom and weaken the adjacent Mn-O bond due to the fracture of the surface Co-O bond, facilitating electron transfer and subsequently the activation of surface lattice oxygen. The obtained CoMn-H1-T1 exhibited an excellent catalytic performance with a 90% acetone conversion at 149 °C, which is 42 °C lower than that of CoMn spinel. Furthermore, the partially maintained spinel structure led to better stability than pure λ-MnO2. In situ diffuse reflectance infrared Fourier transform spectroscopy confirmed a possible degradation pathway where adsorptive acetone converted into formate and acetate species and into CO2, in which the consumption of acetate was identified as the rate-limiting step. This strategy can improve the catalytic performance of metal oxides by activating surface lattice oxygen, to broaden their application in VOC oxidation.
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Affiliation(s)
- Cangpeng Shan
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Yan Zhang
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Qian Zhao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Kaixuan Fu
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Yanfei Zheng
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Rui Han
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Caixia Liu
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Na Ji
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
| | - Weichao Wang
- Department of Electronics, National Institute for Advanced Materials, Renewable Energy Conversion and Storage Center, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, Nankai University, Tianjin 300071, China
| | - Qingling Liu
- Department of Environmental Science and Technology, Tianjin Key Lab of Indoor Air Environmental Quality Control, State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
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11
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Yigit N, Genest A, Terloev S, Möller J, Rupprechter G. Active sites and deactivation of room temperature CO oxidation on Co 3O 4catalysts: combined experimental and computational investigations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:354001. [PMID: 35588721 DOI: 10.1088/1361-648x/ac718b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Co3O4is a well-known low temperature CO oxidation catalyst, but it often suffers from deactivation. We have thus examined room temperature (RT) CO oxidation on Co3O4catalysts by operando DSC, TGA and MS measurements, as well as by pulsed chemisorption to differentiate the contributions of CO adsorption and reaction to CO2. Catalysts pretreated in oxygen at 400 °C are most active, with the initial interaction of CO and Co3O4being strongly exothermic and with maximum amounts of CO adsorption and reaction. The initially high RT activity then levels-off, suggesting that the oxidative pretreatment creates an oxygen-rich reactive Co3O4surface that upon reaction onset loses its most active oxygen. This specific active oxygen is not reestablished by gas phase O2during the RT reaction. When the reaction temperature is increased to 150 °C, full conversion can be maintained for 100 h, and even after cooling back to RT. Apparently, deactivating species are avoided this way, whereas exposing the active surface even briefly to pure CO leads to immediate deactivation. Computational modeling using DFT helped to identify the CO adsorption sites, determine oxygen vacancy formation energies and the origin of deactivation. A new species of CO bonded to oxygen vacancies at RT was identified, which may block a vacancy site from further reaction unless CO is removed at higher temperature. The interaction between oxygen vacancies was found to be small, so that in the active state several lattice oxygen species are available for reaction in parallel.
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Affiliation(s)
- Nevzat Yigit
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Alexander Genest
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Schamil Terloev
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Jury Möller
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Günther Rupprechter
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
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12
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Chen K, Li W, Guo G, Zhu C, Wu W, Yuan L. Nickel Hydroxide Nanosheets Prepared by a Direct Manual Grinding Strategy for High-Efficiency Catalytic Combustion of Methane. ACS OMEGA 2022; 7:8536-8546. [PMID: 35309416 PMCID: PMC8928554 DOI: 10.1021/acsomega.1c06348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Nickel hydroxide nanosheets were prepared by a very simple direct manual grinding strategy and then calcined at 200, 300, 400, and 500°. The synthesized samples were tested in lean methane (1.0% CH4, air balanced) catalytic combustion and subjected to a series of physical and chemical characterizations. The sample calcined at 200 °C (Ni(OH)2-200) presented a typical nanosheet structure and the best methane catalytic activity in all the samples, which can completely catalyze methane at 400 °C. The crystal structure changed from β-Ni(OH)2 to NiO at a calcination temperature of 300 °C. The β-Ni(OH)2 nanosheets began to partially agglomerate into nanoparticles at 400 °C and almost transformed into nanoparticles at 500 °C. Interestingly, the original nanosheet samples Ni(OH)2-200 and NiO-300 still maintained their morphology and structure although they all went through an activity test at 500 °C in a 1.0% CH4 atmosphere, which proves that the calcination of nanosheets in a CH4 atmosphere tended to maintain their nanosheet morphology compared with calcination in the air. Furthermore, through the activity test, X-ray photoelectron spectroscopy results, TPx, and in situ DRIFTS characterization, it was proved that the hydroxyl groups on the Ni(OH)2-200 and NiO nanosheets were beneficial to the dissociation of methane on the catalyst surface, and the nanosheet structure was also prone to generating more active adsorbed oxygen, so the activation energy of methane was lowered. A methane catalytic mechanism on the Ni(OH)2 nanosheets and NiO nanoparticles was proposed, which further proved the key role of hydroxyl groups in methane combustion.
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Affiliation(s)
- Kun Chen
- Laboratory
of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei 230026, PR China
| | - Wenzhi Li
- Laboratory
of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei 230026, PR China
- Institute
of Energy, Hefei Comprehensive National
Science Center, Hefei 230031, PR China
| | - Ge Guo
- Laboratory
of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei 230026, PR China
| | - Chen Zhu
- Laboratory
of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei 230026, PR China
| | - Wenjian Wu
- Laboratory
of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei 230026, PR China
| | - Liang Yuan
- National
& Local Joint Engineering Research Center of Precision Coal Mining, Anhui University of Science and Technology, Huainan 232001, China
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13
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Zang P, Liu J, Liu X, Zhang G, Chen J, Li J, Zhang Y. Remarkable enhancement in the N 2 selectivity of NH 3-SCR over the CeNb 3Fe 0.3/TiO 2 catalyst in the presence of chlorobenzene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19309-19323. [PMID: 34713406 DOI: 10.1007/s11356-021-17116-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The simultaneous removal of NOx and dioxins is the frontier of environmental catalysis, which is still in the initial stage and poses several challenges. In this study, a series of CeNb3Fex/TiO2 (x = 0, 0.3, 0.6, and 1.0) catalysts were prepared by the sol-gel method and examined for the synergistic removal of NOx and CB. The CeNb3Fe0.3/TiO2 catalyst exhibits an optimum catalytic performance, with an NOx conversion greater than 95% at 260-380 °C. It also exhibits an optimal CB oxidation activity, in which CB promoted both the NOx conversion and N2 selectivity below 250 °C. Moreover, the more favorable ratios of Ce4+ to Ce3+ and plentiful surface-adsorbed oxygen species are the reasons why CeNb3Fe0.3/TiO2 catalyst has better catalytic activity than other catalysts at the lower temperature. Simultaneously, owing to the modulation of Fe to the redox properties of Ce and Nb, the large number of oxygen vacancies and acid sites was generated, and the CeNb3Fe0.3/TiO2 catalyst is beneficial to NOx reduction and CB oxidation. Furthermore, the results of in situ DRIFTS study reveal the NH3-SCR reactions over CeNb3Fe0.3/TiO2 catalysts are mainly conformed to by the L-H mechanism (< 350 °C) and E-R mechanism (> 350 °C), respectively, and the multi-pollutant conversion mechanism in the synergistic reaction was systematically studied.
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Affiliation(s)
- Pengchao Zang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
| | - Jun Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China.
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China.
| | - Xiaoqing Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, People's Republic of China
| | - Guojie Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China.
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Yongfa Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
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14
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Hydrotalcite-derived aluminum-doped cobalt oxides for catalytic benzene combustion: Effect of calcination atmosphere. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112160] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Zhou M, Wang H. Optimally Selecting Photo- and Electrocatalysis to Facilitate CH 4 Activation on TiO 2(110) Surface: Localized Photoexcitation versus Global Electric-Field Polarization. JACS AU 2022; 2:188-196. [PMID: 35098235 PMCID: PMC8790734 DOI: 10.1021/jacsau.1c00466] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Indexed: 05/08/2023]
Abstract
Photo- and electrocatalytic technologies hold great promise for activating inert chemical bonds under mild conditions, but rationally selecting a more suitable method in between to maximize the performance remains an open issue, which requires a fundamental understanding of their different catalytic mechanisms. Herein, by first-principles calculations, we systematically compare the activation mechanisms for the C-H bond of the CH4 molecule on TiO2(110) under the photo- and electrocatalytic modes without or with water involved. It quantitatively reveals that the activation barrier of the C-H bond decreases dramatically with a surprising 74% scale by photoexcitation relative to that in thermocatalysis (1.12 eV), while the barrier varies with a maximum promotion of only 5% even under -1 V/Å external electric field (EEF). By detailed geometric/electronic analysis, the superior photocatalytic activity is traced to the highly oxidative lattice Obr •- radical excited by a photohole (h +), which motivates the homolytic C-H bond scission. However, under EEF from -1 V/Å to 1 V/Å, it gives a relatively mild charge polarization on the TiO2(110) surface region and thus a limited promotion for breaking the weakly polar C-H bond. By contrast, in the presence of water, we find that EEF can facilitate CH4 activation indirectly assisted by the surface radical-like OH* species from the oxidative water cleavage at high oxidative potential (>1.85 V vs SHE), which explains the high energy cost to drive electrocatalytic CH4 conversion in experiment. Alternatively, we demonstrate that more efficient CH4 activation could be also achieved at much lower oxidative potential when integrating the light irradiation. In such a circumstance, EEF can not only promote the h + accumulation at the catalyst surface but also help H2O deprotonation to form hydroxide, which can serve as an efficient hole-trapper to generate OH• radical (OH- + h + → OH•), unveiling an interesting synergistic photoelectrocatalytic effect. This work could provide a fundamental insight into the different characteristics of photo- and electrocatalysis in modulating chemical bond cleavage.
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16
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Bulk Co3O4 for Methane Oxidation: Effect of the Synthesis Route on Physico-Chemical Properties and Catalytic Performance. Catalysts 2022. [DOI: 10.3390/catal12010087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The synthesis of bulk pure Co3O4 catalysts by different routes has been examined in order to obtain highly active catalysts for lean methane combustion. Thus, eight synthesis methodologies, which were selected based on their relatively low complexity and easiness for scale-up, were evaluated. The investigated procedures were direct calcination of two different cobalt precursors (cobalt nitrate and cobalt hydroxycarbonate), basic grinding route, two basic precipitation routes with ammonium carbonate and sodium carbonate, precipitation-oxidation, solution combustion synthesis and sol-gel complexation. A commercial Co3O4 was also used as a reference. Among the several examined methodologies, direct calcination of cobalt hydroxycarbonate (HC sample), basic grinding (GB sample) and basic precipitation employing sodium carbonate as the precipitating agent (CC sample) produced bulk catalysts with fairly good textural and structural properties, and remarkable redox properties, which were found to be crucial for their good performance in the oxidation of methane. All catalysts attained full conversion and 100% selectivity towards CO2 formation at a temperature of 600 °C while operating at 60,000 h−1. Among these, the CC catalyst was the only one that achieved a specific reaction rate higher than that of the reference commercial Co3O4 catalyst.
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17
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Hudy C, Długosz O, Gryboś J, Zasada F, Krasowska A, Janas J, Sojka Z. Catalytic performance of mixed M xCo 3−xO 4 (M = Cr, Fe, Mn, Ni, Cu, Zn) spinels obtained by combustion synthesis for preferential carbon monoxide oxidation (CO-PROX): insights into the factors controlling catalyst selectivity and activity. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00388k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of mixed cobalt spinel catalysts (MxCo3−xO4 (M = Cr, Fe, Mn, Ni, Cu, Zn)) was synthesized and tested in the CO-PROX reaction and in sole CO oxidation and H2 oxidation as references.
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Affiliation(s)
- Camillo Hudy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Olga Długosz
- Faculty of Engineering and Chemical Technology, Cracow University of Technology, 31-155 Krakow, Poland
| | - Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Filip Zasada
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Aneta Krasowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Janusz Janas
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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18
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Zhou M, Wang HF. Insight into the photoexcitation effect on the catalytic activation of H2 and C-H bonds on TiO2(110) surface. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.12.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Hudy C, Gryboś J, Steenbakkers K, Góra-Marek K, Zasada F, Sojka Z. Isotopic evidence for the tangled mechanism of the CO-PROX reaction over mixed and bare cobalt spinel catalysts. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01063a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic performance of the bare Co3O4 and mixed cobalt-spinel catalysts (MxCo3−xO4; M = Cr, Mn, Fe, Ni, Cu, Zn) in the CO-PROX process was investigated in the temperature-programmed surface reaction (TPSR) mode using 18O2 as an oxidant.
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Affiliation(s)
- Camillo Hudy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kim Steenbakkers
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kinga Góra-Marek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Filip Zasada
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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20
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New Insight into the Interplay of Method of Deposition, Chemical State of Pd, Oxygen Storage Capability and Catalytic Activity of Pd-Containing Perovskite Catalysts for Combustion of Methane. Catalysts 2021. [DOI: 10.3390/catal11111399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Elaboration of Pd-supported catalysts for catalytic combustion is, nowadays, considered as an imperative task to reduce the emissions of methane. This study provides new insight into the method of deposition, chemical state of Pd and oxygen storage capability of transition metal ions and their effects on the catalytic reactivity of supported catalysts for the combustion of methane. The catalyst with nominal composition La(Co0.8Ni0.1Fe0.1)0.85Pd0.15O3 was supported on SiO2-modified/γ-alumina using two synthetic procedures: (i) aerosol assisted chemical vapor deposition (U-AACVD) and (ii) wet impregnation (Imp). A comparative analysis shows that a higher catalytic activity is established for supported catalyst obtained by wet impregnation, where the PdO-like phase is well dispersed and the transition metal ions display a high oxygen storage capability. The reaction pathway over both catalysts proceeds most probably through Mars–van Krevelen mechanism. The supported catalysts are thermally stable when they are aged at 505 °C for 120 h in air containing 1.2 vol.% water vapor. Furthermore, the experimentally obtained data on La(Co0.8Ni0.1Fe0.1)0.85Pd0.15O3—based catalyst, supported on monolithic substrate VDM®Aluchrom Y Hf are simulated by using a two-dimensional heterogeneous model for monolithic reactor in order to predict the performance of an industrial catalytic reactor for abatement of methane emissions.
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21
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Dynamics of Reactive Oxygen Species on Cobalt-Containing Spinel Oxides in Cyclic CO Oxidation. Catalysts 2021. [DOI: 10.3390/catal11111312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Reactive oxygen species (ROS) are considered to be responsible for the high catalytic activity of transition metal oxides like Co3-xFexO4 in oxidation reactions, but the detailed influences of catalyst composition and morphology on the formation of these reactive oxygen species are not fully understood. In the presented study, Co3O4 spinels of different mesostructures, i.e., particle size, crystallinity, and specific surface area, are characterized by powder X-ray diffraction, scanning electron microscopy, and physisorption. The materials were tested in CO oxidation performed in consecutive runs and compared to a Co3-xFexO4 composition series with a similar mesostructure to study the effects of catalyst morphology and composition on ROS formation. In the first run, the CO conversion was observed to be dominated by the exposed surface area for the pure Co-spinels, while a negative effect of Fe content in the spinels was seen. In the following oxidation run, a U-shaped conversion curve was observed for materials with high surface area, which indicated the in situ formation of ROS on those materials that were responsible for the new activity at low temperature. This activation was not stable at the higher reaction temperature but was confirmed after temperature-programmed oxidation (TPO). However, no activation after the first run was observed for low-surface-area and highly crystalline materials, and the lowest surface-area material was not even activated after TPO. Among the catalyst series studied here, a correlation of small particle size and large surface area with the ability for ROS formation is presented, and the benefit of a nanoscaled catalyst is discussed. Despite the generally negative effect of Fe, the highest relative activation was observed at intermediate Fe contents suggesting that Fe may be involved in ROS formation.
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22
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Synthesis of Ash Derived Co/Zeolite Catalyst for Hydrogen Rich Syngas Production via Partial Oxidation of Methane. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.3.10614.507-516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The objective of this study was to analyze the catalytic performance of series of cobalt-modified Zeolite-4A supported catalysts for the syngas (CO and H2) production at 800 °C via the partial oxidation of methane (POM). The Co/Zeolite-4A catalyst was synthesized using a two-step hydrothermal method from coal fly ash. The synthesized catalysts were characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-ray (EDX), and Thermogravimetric Analysis (TGA). The catalyst shows a crystalline structure with stability up to 900 °C. The catalytic performance analysis shows the CH4 conversion increases from 29 to 68% for 0 and 10 wt% Co over Zeolite-4A, respectively. The H2 selectivity was improved from 28–56% while CO selectivity increased from 24–52 % making H2/CO ratio > 1. The stability analysis shows the 10% Co/Zeolite-4A withstand for 24 h a time on stream (TOS). Finally, the spent catalyst analysis was carried out to check the carbon formation along with its structural analysis. The minimal carbon formation is analyzed in 24 h TOS for POM reaction. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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23
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Gryboś J, Fedyna M, Legutko P, Leszczyński B, Janas J, Wach A, Szlachetko J, Yu X, Kotarba A, Zhao Z, Sojka Z. Mechanistic Insights into Oxygen Dynamics in Soot Combustion over Cryptomelane Catalysts in Tight and Loose Contact Modes via 18O 2/ 16O 2 Isotopic Variable Composition Measurements – A Hot Ring Model of the Catalyst Operation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Monika Fedyna
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Piotr Legutko
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Bartosz Leszczyński
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, Krakow 30-348, Poland
| | - Janusz Janas
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Anna Wach
- Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego, 152, Krakow 31-342, Poland
| | - Jakub Szlachetko
- Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego, 152, Krakow 31-342, Poland
| | - Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, Liaoning, China
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, Liaoning, China
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
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24
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Low-temperature combustion of methane over graphene templated Co 3O 4 defective-nanoplates. Sci Rep 2021; 11:12604. [PMID: 34131253 PMCID: PMC8206361 DOI: 10.1038/s41598-021-92165-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/07/2021] [Indexed: 11/11/2022] Open
Abstract
Transition metal oxides are the potential catalysts to replace noble-metal based catalyst for the catalytic combustion of methane due to the tolerable reactivity and low cost. However, these catalysts are challenged by the low temperature reactivity. Herein, the surface defective Co3O4 nanoplates are realized through a facile co-precipitation and thermal reduction method with the association of GO. The resultant catalysts (CoGO50) demonstrate a superior low-temperature reactivity for the methane oxidation to CO2 and H2O in comparison with the common Co3O4 catalyst. The reliable stability of CoGO50 catalyst was proved by 80 h testing with intermittent feeding of water vapor. The experimental analysis demonstrates that the presence of a small amount of GO significantly affects the catalysts in surface valence state, active oxygen species and surface oxygen vacancies through reacting with the cobalt oxide as a reductant. Moreover, GO plays as 2D confine template to form smaller and thinner nanoplates. This work provides a facile method to control the surface properties of catalyst not only for Co3O4 based catalysts but also for wider solid catalysts.
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25
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Ma Y, Wang L, Ma J, Wang H, Zhang C, Deng H, He H. Investigation into the Enhanced Catalytic Oxidation of o-Xylene over MOF-Derived Co 3O 4 with Different Shapes: The Role of Surface Twofold-Coordinate Lattice Oxygen (O 2f). ACS Catal 2021. [DOI: 10.1021/acscatal.1c01116] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ying Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lian Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Honghong Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Deng
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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26
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Shen W. Morphology-dependent nanocatalysis: tricobalt tetraoxide. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-020-04344-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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27
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Neuberg S, Pennemann H, Shanmugam V, Zapf R, Kolb G. Promoting effect of Rh on the activity and stability of Pt-based methane combustion catalyst in microreactors. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2020.106202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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28
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29
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Falk T, Anke S, Hajiyani H, Saddeler S, Schulz S, Pentcheva R, Peng B, Muhler M. Influence of the particle size on selective 2-propanol gas-phase oxidation over Co 3O 4 nanospheres. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00944c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Co3O4 nanospheres with a preferential (110) surface orientation showed excellent catalytic properties in the selective gas-phase oxidation of 2-propanol. A preferential Mars–van Krevelen mechanism on the Co3O4(110) surface was identified by DFT + U.
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Affiliation(s)
- Tobias Falk
- Laboratory of Industrial Chemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Sven Anke
- Laboratory of Industrial Chemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Hamidreza Hajiyani
- Department of Physics, Theoretical Physics, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstraße 1, 47057 Duisburg, Germany
| | - Sascha Saddeler
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstraße 5-7, 45141 Essen, Germany
| | - Stephan Schulz
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstraße 5-7, 45141 Essen, Germany
| | - Rossitza Pentcheva
- Department of Physics, Theoretical Physics, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstraße 1, 47057 Duisburg, Germany
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Ruhr University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
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30
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Ghampson IT, Lundin STB, Shishido T, Oyama ST. Isotopic 18O/ 16O substitution study on the direct partial oxidation of CH 4 to dimethyl ether over a Pt/Y 2O 3 catalyst using NO/O 2 as an oxidant. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00253h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Dimethyl ether (DME) is produced by partial oxidation of CH4 with NO/O2 on Pt/Y2O3. Isotopic oxygen (18O2) is used to confirm molecular O2 as the ultimate oxidant and a kinetic isotope effect for 18O/16O is observed.
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Affiliation(s)
- I. Tyrone Ghampson
- Department of Applied Chemistry for Environment
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
| | | | - Tetsuya Shishido
- Department of Applied Chemistry for Environment
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
| | - S. Ted Oyama
- School of Chemical Engineering
- Fuzhou University
- Fuzhou 350116
- China
- Department of Chemical System Engineering
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31
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32
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Li H, Chen S, Shang H, Wang X, Yang Z, Ai Z, Zhang L. Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis. Sci Bull (Beijing) 2020; 65:1916-1923. [PMID: 36738057 DOI: 10.1016/j.scib.2020.06.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/16/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023]
Abstract
Rational engineering of oxygen vacancy (VO) at atomic precision is the key to comprehensively understanding the oxygen chemistry of oxide materials for catalytic oxidations. Here, we demonstrate that VO can be spatially confined on the surface through a sophisticated surface hydrogen bond (HB) network. The HB network is constructed between a hydroxyl-rich BiOCl surface and polyprotic phosphoric acid, which remarkably decreases the formation energy of surface VO by selectively weakening the metal-oxygen bonds in a short range. Thus, surface-confined VO enables us to unambiguously distinguish the intrafacial and suprafacial oxygen species associated with NO oxidation in two classical catalytic systems. Unlike randomly distributed bulk VO that benefits the thermocatalytic NO oxidation and lattice O diffusion by the dominant intrafacial mechanism, surface VO is demonstrated to favor the photocatalytic NO oxidation through a suprafacial scheme by energetically activating surface O2, which should be attributed to the spatial confinement nature of surface VO.
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Affiliation(s)
- Hao Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Shang Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Huan Shang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xiaobing Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Zhiping Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Zhihui Ai
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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Wang T, Zhang C, Wang J, Li H, Duan Y, Liu Z, Lee JY, Hu X, Xi S, Du Y, Sun S, Liu X, Lee JM, Wang C, Xu ZJ. The interplay between the suprafacial and intrafacial mechanisms for complete methane oxidation on substituted LaCoO3 perovskite oxides. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Farahani MD, Wolf M, P.O. Mkhwanazi T, Claeys M, Friedrich HB. Operando experimental evidence on the central role of oxygen vacancies during methane combustion. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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He Y, Guo F, Yang KR, Heinlein JA, Bamonte SM, Fee JJ, Hu S, Suib SL, Haller GL, Batista VS, Pfefferle LD. In Situ Identification of Reaction Intermediates and Mechanistic Understandings of Methane Oxidation over Hematite: A Combined Experimental and Theoretical Study. J Am Chem Soc 2020; 142:17119-17130. [PMID: 32935987 DOI: 10.1021/jacs.0c07179] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yulian He
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Facheng Guo
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Ke R. Yang
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Jake A. Heinlein
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Scott M. Bamonte
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Jared J. Fee
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Shu Hu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Steven L. Suib
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Gary L. Haller
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Victor S. Batista
- Energy Sciences Institute, Yale University, 810 West Campus Drive, West Haven, Connecticut 06516, United States
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Lisa D. Pfefferle
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
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Zasada F, Gryboś J, Hudy C, Janas J, Sojka Z. Total oxidation of lean methane over cobalt spinel nanocubes—Mechanistic vistas gained from DFT modeling and catalytic isotopic investigations. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.03.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Comparative Study of Strategies for Enhancing the Performance of Co3O4/Al2O3 Catalysts for Lean Methane Combustion. Catalysts 2020. [DOI: 10.3390/catal10070757] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Spinel-type cobalt oxide is a highly active catalyst for oxidation reactions owing to its remarkable redox properties, although it generally exhibits poor mechanical, textural and structural properties. Supporting this material on a porous alumina can significantly improve these characteristics. However, the strong cobalt–alumina interaction leads to the formation of inactive cobalt aluminate, which limits the activity of the resulting catalysts. In this work, three different strategies for enhancing the performance of alumina-supported catalysts are examined: (i) surface protection of the alumina with magnesia prior to the deposition of the cobalt precursor, with the objective of minimizing the cobalt–alumina interaction; (ii) coprecipitation of cobalt along with nickel, with the aim of improving the redox properties of the deposited cobalt and (iii) surface protection of alumina with ceria, to provide both a barrier effect, minimizing the cobalt–alumina interaction, and a redox promoting effect on the deposited cobalt. Among the examined strategies, the addition of ceria (20 wt % Ce) prior to the deposition of cobalt resulted in being highly efficient. This sample was characterized by a notable abundance of both Co3+ and oxygen lattice species, derived from the partial inhibition of cobalt aluminate formation and the insertion of Ce4+ cations into the spinel lattice.
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Zhang J, Wang L, Wu Z, Wang H, Zhang B, Xiao F. Mesoporous Co‐Al oxide nanosheets as highly efficient catalysts for CO oxidation. AIChE J 2020. [DOI: 10.1002/aic.16929] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jian Zhang
- Beijing Advanced Innovation Center for Soft Matter, Science and EngineeringBeijing University of Chemical Technology Beijing China
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of ChemistryZhejiang University Hangzhou China
| | - Liang Wang
- Key Lab of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Zhiyi Wu
- Beijing Advanced Innovation Center for Soft Matter, Science and EngineeringBeijing University of Chemical Technology Beijing China
| | - Hai Wang
- Key Lab of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Bingsen Zhang
- Shenyang National Laboratory of Materials ScienceInstitute of Metal Research, Chinese Academy of Sciences Shenyang China
| | - Feng‐Shou Xiao
- Beijing Advanced Innovation Center for Soft Matter, Science and EngineeringBeijing University of Chemical Technology Beijing China
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of ChemistryZhejiang University Hangzhou China
- Key Lab of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological Engineering, Zhejiang University Hangzhou China
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A High-Throughput Screening Approach to Identify New Active and Long-Term Stable Catalysts for Total Oxidation of Methane from Gas-Fueled Lean–Burn Engines. Catalysts 2020. [DOI: 10.3390/catal10020159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A unique high-throughput approach to identify new catalysts for total oxidation of methane from the exhaust gas of biogas-operated lean-burn engines is presented. The approach consists of three steps: (1) A primary screening using emission-corrected Infrared Thermography (ecIRT). (2) Validation in a conventional plug flow gas phase reactor using a model exhaust gas containing CH4, O2, CO, CO2, NO, NO2, N2O, SO2, H2O. (3) Ageing tests using a simplified exhaust gas (CH4, O2, CO2, SO2, H2O). To demonstrate the efficiency of this approach, one selected dataset with a sol-gel-based catalysts is presented. Compositions are 3 at.% precious metals (Pt, Rh) combined with different amounts of Al, Mn, and Ce in the form of mixed oxides. To find new promising materials for the abatement of methane, about two thousand different compositions were synthesized and ranked using ecIRT, and several hundred were characterized using a plug flow reactor and their ageing behaviour was determined.
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Liu Z, Li J, Wang R. CeO2 nanorods supported M–Co bimetallic oxides (M = Fe, Ni, Cu) for catalytic CO and C3H8 oxidation. J Colloid Interface Sci 2020; 560:91-102. [DOI: 10.1016/j.jcis.2019.10.046] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 12/21/2022]
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41
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Niu J, Liu H, Qian H, Liu J, Ma M, Duan E, Yu L. Preparation of metal-doped Cu-Mn/HTS-1 catalysts and their mechanisms in efficient degradation of toluene. J Environ Sci (China) 2020; 88:260-272. [PMID: 31862067 DOI: 10.1016/j.jes.2019.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/27/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
In order to study their synergistic catalytic effects in toluene degradation, CuMn2O4/HTS-1 (HTS-1 was a titanium silicon molecular sieve), Cu0.7Mn2Y0.3Ox/HTS-1 and Cu0.7Mn2Ce0.3Ox/HTS-1 catalysts were prepared by the impregnation method. The textural properties, redox properties and acidity of the catalysts were characterized by X-ray diffractometer (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), H2 temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), frustrated total internal reflection (FT-IR), ammonium temperature-programmed desorption (NH3-TPD) and pyridine adsorption internal reflection (Py-IR) measurements. The potential roles of Lewis acid sites (activating dioxygen) were discussed, and the experimental results indicated that the most efficient route for toluene degradation over Cu0.7Mn2Ce0.3Ox/HTS-1 (toluene conversion rate of 90% (T99)=295°C) was ascribed to regulation of the synergistic effects of redox properties (activating molecular toluene) and Lewis acid sites (activating dioxygen). The Mars-Van-Krevelen (MVK) model was adopted to describe the reaction process of toluene oxidation, which gave an in-depth view into the toluene degradation over CuMn2O4/HTS-1, Cu0.7Mn2Y0.3Ox/HTS-1 and Cu0.7Mn2Ce0.3Ox/HTS-1. In addition, the synergistic effects between redox properties and Lewis acid sites were studied in detail.
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Affiliation(s)
- Jianrui Niu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China
| | - Haobin Liu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China
| | - Hengli Qian
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China
| | - Jie Liu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China
| | - Mengyuan Ma
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China
| | - Erhong Duan
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China.
| | - Lei Yu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China; Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei 050018, China.
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Barrett W, Nasr S, Shen J, Hu Y, Hayes RE, Scott RWJ, Semagina N. Strong metal–support interactions in Pd/Co3O4 catalyst in wet methane combustion: in situ X-ray absorption study. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00465k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CoOx inhibits Pd oxidation in CH4 combustion in the wet feed.
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Affiliation(s)
- William Barrett
- Department of Chemistry
- University of Saskatchewan
- Saskatoon
- S7N 5C9 Canada
| | - Somaye Nasr
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- T6G 1H9 Canada
| | - Jing Shen
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- T6G 1H9 Canada
| | - Yongfeng Hu
- Canadian Light Source Inc
- Saskatoon
- S7N 2V3 Canada
| | - Robert E. Hayes
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- T6G 1H9 Canada
| | - Robert W. J. Scott
- Department of Chemistry
- University of Saskatchewan
- Saskatoon
- S7N 5C9 Canada
| | - Natalia Semagina
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- T6G 1H9 Canada
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43
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Synthesis, Characterization and Kinetic Behavior of Supported Cobalt Catalysts for Oxidative after-Treatment of Methane Lean Mixtures. MATERIALS 2019; 12:ma12193174. [PMID: 31569775 PMCID: PMC6804103 DOI: 10.3390/ma12193174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 09/23/2019] [Accepted: 09/26/2019] [Indexed: 12/24/2022]
Abstract
The present work addresses the influence of the support on the catalytic behavior of Co3O4-based catalysts in the combustion of lean methane present in the exhaust gases from natural gas vehicular engines. Three different supports were selected, namely γ-alumina, magnesia and ceria and the corresponding catalysts were loaded with a nominal cobalt content of 30 wt. %. The samples were characterized by N2 physisorption, wavelength dispersive X-ray fluorescence (WDXRF), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction with hydrogen and methane. The performance was negatively influenced by a strong cobalt-support interaction, which in turn reduced the amount of active cobalt species as Co3O4. Hence, when alumina or magnesia supports were employed, the formation of CoAl2O4 or Co-Mg mixed oxides, respectively, with a low reducibility was evident, while ceria showed a lower affinity for deposited cobalt and this remained essentially as Co3O4. Furthermore, the observed partial insertion of Ce into the Co3O4 lattice played a beneficial role in promoting the oxygen mobility at low temperatures and consequently the catalytic activity. This catalyst also exhibited a good thermal stability while the presence of water vapor in the feedstream induced a partial inhibition, which was found to be completely reversible.
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Yang J, Hu S, Fang Y, Hoang S, Li L, Yang W, Liang Z, Wu J, Hu J, Xiao W, Pan C, Luo Z, Ding J, Zhang L, Guo Y. Oxygen Vacancy Promoted O2 Activation over Perovskite Oxide for Low-Temperature CO Oxidation. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02408] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ji Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Siyu Hu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Yarong Fang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Son Hoang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Li Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Weiwei Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Zhenfeng Liang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Jian Wu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Jinpeng Hu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Wen Xiao
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Chuanqi Pan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Zhu Luo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Yanbing Guo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
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Zhang C, Zhao P, Liu S, Yu K. Three-dimensionally ordered macroporous perovskite materials for environmental applications. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63341-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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46
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Affiliation(s)
- George Yan
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Philippe Sautet
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
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47
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Anke S, Bendt G, Sinev I, Hajiyani H, Antoni H, Zegkinoglou I, Jeon H, Pentcheva R, Roldan Cuenya B, Schulz S, Muhler M. Selective 2-Propanol Oxidation over Unsupported Co3O4 Spinel Nanoparticles: Mechanistic Insights into Aerobic Oxidation of Alcohols. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01048] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sven Anke
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Georg Bendt
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45114 Essen, Germany
| | - Ilya Sinev
- Department of Physics, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Hamidreza Hajiyani
- Department of Physics, Theoretical Physics, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Hendrik Antoni
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780 Bochum, Germany
| | | | - Hyosang Jeon
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - Rossitza Pentcheva
- Department of Physics, Theoretical Physics, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - Stephan Schulz
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45114 Essen, Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780 Bochum, Germany
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48
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Tuning nonstoichiometric defects in single-phase MnOx for methane complete oxidation. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.01.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Zhao B, Jian Y, Jiang Z, Albilali R, He C. Revealing the unexpected promotion effect of EuO on Pt/CeO2 catalysts for catalytic combustion of toluene. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63292-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Zasada F, Gryboś J, Budiyanto E, Janas J, Sojka Z. Oxygen species stabilized on the cobalt spinel nano-octahedra at various reaction conditions and their role in catalytic CO and CH4 oxidation, N2O decomposition and oxygen isotopic exchange. J Catal 2019. [DOI: 10.1016/j.jcat.2019.02.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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