1
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Wang C, Xu Y, Xiong L, Li X, Chen E, Miao TJ, Zhang T, Lan Y, Tang J. Selective oxidation of methane to C 2+ products over Au-CeO 2 by photon-phonon co-driven catalysis. Nat Commun 2024; 15:7535. [PMID: 39214973 PMCID: PMC11364766 DOI: 10.1038/s41467-024-51690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 08/14/2024] [Indexed: 09/04/2024] Open
Abstract
Direct methane conversion to high-value chemicals under mild conditions is attractive yet challenging due to the inertness of methane and the high reactivity of valuable products. This work presents an efficient and selective strategy to achieve direct methane conversion through the oxidative coupling of methane over a visible-responsive Au-loaded CeO2 by photon-phonon co-driven catalysis. A record-high ethane yield of 755 μmol h-1 (15,100 μmol g-1 h-1) and selectivity of 93% are achieved under optimised reaction conditions, corresponding to an apparent quantum efficiency of 12% at 365 nm. Moreover, the high activity of the photocatalyst can be maintained for at least 120 h without noticeable decay. The pre-treatment of the catalyst at relatively high temperatures introduces oxygen vacancies, which improves oxygen adsorption and activation. Furthermore, Au, serving as a hole acceptor, facilitates charge separation, inhibits overoxidation and promotes the C-C coupling reaction. All these enhance photon efficiency and product yield.
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Affiliation(s)
- Chao Wang
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Youxun Xu
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Lunqiao Xiong
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
- Industrial Catalysis Center, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiyi Li
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Enqi Chen
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Tina Jingyan Miao
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Tianyu Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, P. R. China.
| | - Yang Lan
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Junwang Tang
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
- Industrial Catalysis Center, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
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2
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Lai Y, Wang R, Zeng Y, Li F, Chen X, Wang T, Fan H, Guo Q. Low-Temperature Oxidation of Methane on Rutile TiO 2(110): Identifying the Role of Surface Oxygen Species. JACS AU 2024; 4:1396-1404. [PMID: 38665644 PMCID: PMC11040672 DOI: 10.1021/jacsau.3c00771] [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: 12/06/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 04/28/2024]
Abstract
Understanding the microkinetic mechanism underlying photocatalytic oxidative methane (CH4) conversion is of significant importance for the successful design of efficient catalysts. Herein, CH4 photooxidation has been systematically investigated on oxidized rutile(R)-TiO2(110) at 60 K. Under 355 nm irradiation, the C-H bond activation of CH4 is accomplished by the hole-trapped dangling OTi- center rather than the hole-trapped Ob- center via the Eley-Rideal reaction pathway, producing movable CH3• radicals. Subsequently, movable CH3• radicals encounter an O/OH species to form CH3O/CH3OH species, which could further dissociate into CH2O under irradiation. However, the majority of the CH3• radical intermediate is ejected into a vacuum, which may induce radical-mediated reactions under ambient conditions. The result not only advances our knowledge about inert C-H bond activation but also provides a deep insight into the mechanism of photocatalytic CH4 conversion, which will be helpful for the successful design of efficient catalysts.
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Affiliation(s)
- Yuemiao Lai
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
| | - Ruimin Wang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China
- School
of Pharmacy, North China University of Science
and Technology, Tangshan, Hebei 063210, PR China
| | - Yi Zeng
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
| | - Fangliang Li
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
| | - Xiao Chen
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
- Institute
of Advanced Science Facilities, Shenzhen, Guangdong 518107, PR China
| | - Tao Wang
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
| | - Hongjun Fan
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China
| | - Qing Guo
- Shenzhen
Key Laboratory of Energy Chemistry & Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China
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3
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Yamamoto M, Goto S, Tang R, Yamazaki K. Toward three-dimensionally ordered nanoporous graphene materials: template synthesis, structure, and applications. Chem Sci 2024; 15:1953-1965. [PMID: 38332834 PMCID: PMC10848746 DOI: 10.1039/d3sc05022j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/23/2023] [Indexed: 02/10/2024] Open
Abstract
Precise template synthesis will realize three-dimensionally ordered nanoporous graphenes (NPGs) with a spatially controlled seamless graphene structure and fewer edges. These structural features result in superelastic nature, high electrochemical stability, high electrical conductivity, and fast diffusion of gases and ions at the same time. Such innovative 3D graphene materials are conducive to solving energy-related issues for a better future. To further improve the attractive properties of NPGs, we review the template synthesis and its mechanism by chemical vapor deposition of hydrocarbons, analysis of the nanoporous graphene structure, and applications in electrochemical and mechanical devices.
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Affiliation(s)
- Masanori Yamamoto
- Department of Chemical Science and Engineering, Tokyo Institute of Technology Ookayama 2-12-1 Meguro Tokyo 152-8550 Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan
| | - Shunsuke Goto
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan
| | - Rui Tang
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan
| | - Kaoru Yamazaki
- RIKEN Center for Advanced Photonics, RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan
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4
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Filardi LR, Vila FD, Hong J, Hoffman AS, Perez-Aguilar JE, Bare SR, Runnebaum RC, Kronawitter CX. Impact of Local Structure in Supported CaO Catalysts for Soft-Oxidant-Assisted Methane Coupling Assessed through Ca K-Edge X-ray Absorption Spectroscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:1165-1176. [PMID: 38293693 PMCID: PMC10823472 DOI: 10.1021/acs.jpcc.3c06527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 02/01/2024]
Abstract
Soft-oxidant-assisted methane coupling has emerged as a promising pathway to upgrade methane from natural gas sources to high-value commodity chemicals, such as ethylene, at selectivities higher than those associated with oxidative (O2) methane coupling (OCM). To date, few studies have reported investigations into the electronic structure and the microscopic physical structure of catalytic active sites present in the binary metal oxide catalyst systems that are known to be effective for this reaction. Correlating the catalyst activity to specific active site structures and electronic properties is an essential aspect of catalyst design. Here, we used X-ray absorption spectroscopy at the Ca K-edge to ascertain the most probable local environment of Ca in the ZnO-supported Ca oxide catalysts. These catalysts are shown here to be active for N2O-assisted methane coupling (N2O-OCM) and have previously been reported to be active for CO2-assisted methane coupling (CO2-OCM). X-ray absorption near edge structure features at multiple Ca loadings are interpreted through simulated spectra derived from ab initio full multiple scattering calculations. These simulations included consideration of CaO structures organized in multiple spatial arrangements-linear, planar, and cubic-with separate analyses of Ca atoms in the surfaces and bulk of the three-dimensional structures. The morphology of the oxide clusters was found to influence the various regions of the X-ray absorption spectrum differently. Experiment and theory show that for low-Ca-loading catalysts (≤1 mol %), which contain sites particularly active for methane coupling, Ca primarily exists in an oxidized state that is consistent with the coordination environment of Ca ions in one- and two-dimensional clusters. In addition to their unique nanoscale structures, the spectra also indicate that these clusters have varying degrees of undercoordinated surface Ca atoms that could further influence their catalytic activities. The local Ca structure was correlated to methane coupling activity from N2O-OCM and previously reported CO2-OCM reactor studies. This study provides a unique perspective on the relationship between the catalyst physical and electronic structure and active sites for soft-oxidant-assisted methane coupling, which can be used to inform future catalyst development.
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Affiliation(s)
- Leah R. Filardi
- Department
of Chemical Engineering, University of California,
Davis, Davis, California 95616, United States
| | - Fernando D. Vila
- Department
of Physics, University of Washington, Seattle, Washington 98195, United States
| | - Jiyun Hong
- SSRL,
SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Adam S. Hoffman
- SSRL,
SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | | | - Simon R. Bare
- SSRL,
SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ron C. Runnebaum
- Department
of Chemical Engineering, University of California,
Davis, Davis, California 95616, United States
- Department
of Viticulture & Enology, University
of California, Davis, Davis, California 95616, United States
| | - Coleman X. Kronawitter
- Department
of Chemical Engineering, University of California,
Davis, Davis, California 95616, United States
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5
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Zhao K, Gao Y, Wang X, Lis BM, Liu J, Jin B, Smith J, Huang C, Gao W, Wang X, Wang X, Zheng A, Huang Z, Hu J, Schömacker R, Wachs IE, Li F. Lithium carbonate-promoted mixed rare earth oxides as a generalized strategy for oxidative coupling of methane with exceptional yields. Nat Commun 2023; 14:7749. [PMID: 38012194 PMCID: PMC10682025 DOI: 10.1038/s41467-023-43682-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023] Open
Abstract
The oxidative coupling of methane to higher hydrocarbons offers a promising autothermal approach for direct methane conversion, but its progress has been hindered by yield limitations, high temperature requirements, and performance penalties at practical methane partial pressures (~1 atm). In this study, we report a class of Li2CO3-coated mixed rare earth oxides as highly effective redox catalysts for oxidative coupling of methane under a chemical looping scheme. This catalyst achieves a single-pass C2+ yield up to 30.6%, demonstrating stable performance at 700 °C and methane partial pressures up to 1.4 atm. In-situ characterizations and quantum chemistry calculations provide insights into the distinct roles of the mixed oxide core and Li2CO3 shell, as well as the interplay between the Pr oxidation state and active peroxide formation upon Li2CO3 coating. Furthermore, we establish a generalized correlation between Pr4+ content in the mixed lanthanide oxide and hydrocarbons yield, offering a valuable optimization strategy for this class of oxidative coupling of methane redox catalysts.
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Affiliation(s)
- Kun Zhao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Yunfei Gao
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China.
| | - Xijun Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA
| | - Bar Mosevitzky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA
| | - Junchen Liu
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Baitang Jin
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Jacob Smith
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Chuande Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wenpei Gao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Xiaodong Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xin Wang
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China
| | - Anqing Zheng
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Zhen Huang
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Jianli Hu
- Department of Chemical & Biomedical Engineering, West Virginia University, Morgantown, WV, USA
| | - Reinhard Schömacker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Berlin, Germany
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA.
| | - Fanxing Li
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA.
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6
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Zhang SBXY, Pessemesse Q, Berkson ZJ, van Bavel AP, Horton AD, Payard PA, Copéret C. Lithium Promotes Acetylide Formation on MgO During Methane Coupling Under Non-Oxidative Conditions. Angew Chem Int Ed Engl 2023; 62:e202307814. [PMID: 37485913 DOI: 10.1002/anie.202307814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
A prototypical material for the oxidative coupling of methane (OCM) is Li/MgO, for which Li is known to be essential as a dopant to obtain high C2 selectivities. Herein, Li/MgO is demonstrated to be an effective catalyst for non-oxidative coupling of methane (NOCM). Moreover, the presence of Li is shown to favor the formation of magnesium acetylide (MgC2 ), while pure MgO promotes coke formation as evidenced by solid-state 13 C NMR, thus indicating that Li promotes C-C bond formation. Metadynamic simulations of the carbon mobility in MgC2 and Li2 C2 at the density functional theory (DFT) level show that carbon easily diffuses as a C2 unit at 1000 °C. These insights suggest that the enhanced C2 selectivity for Li-doped MgO is related to the formation of Li and Mg acetylides.
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Affiliation(s)
- Seraphine B X Y Zhang
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
| | - Quentin Pessemesse
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, 69622, Lyon, France
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
| | - Alexander P van Bavel
- Shell Global Solutions International B.V., Grasweg 31, 1031 HW, Amsterdam, The Netherlands
| | - Andrew D Horton
- Shell Global Solutions International B.V., Grasweg 31, 1031 HW, Amsterdam, The Netherlands
| | - Pierre-Adrien Payard
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, 69622, Lyon, France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
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7
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Alturkistani S, Wang H, Gautam R, Sarathy SM. Importance of Process Variables and Their Optimization for Oxidative Coupling of Methane (OCM). ACS OMEGA 2023; 8:21223-21236. [PMID: 37332791 PMCID: PMC10269255 DOI: 10.1021/acsomega.3c02350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 05/18/2023] [Indexed: 06/20/2023]
Abstract
Oxidative coupling of methane (OCM) is a promising process for converting natural gas into high-value chemicals such as ethane and ethylene. The process, however, requires important improvements for commercialization. The foremost is increasing the process selectivity to C2 (C2H4 + C2H6) at moderate to high levels of methane conversion. These developments are often addressed at the catalyst level. However, optimization of process conditions can lead to very important improvements. In this study, a high-throughput screening (HTS) instrument was utilized for La2O3/CeO2 (3.3 mol % Ce) to generate a parametric data set within the temperature range of 600-800 °C, CH4/O2 ratio between 3 and 13, pressure between 1 and 10 bar, and catalyst loading between 5 and 20 mg leading to space-time between 40 and 172 s. Statistical design of experiments (DoE) was applied to gain insights into the effect of operating parameters and to determine the optimal operating conditions for maximum production of ethane and ethylene. Rate-of-production analysis was used to shed light on the elementary reactions involved in different operating conditions. The data obtained from HTS experiments established quadratic equations relating the studied process variables and output responses. The quadratic equations can be used to predict and optimize the OCM process. The results demonstrated that the CH4/O2 ratio and operating temperatures are key for controlling the process performance. Operating at higher temperatures with high CH4/O2 ratios increased the selectivity to C2 and minimized COx (CO + CO2) at moderate conversion levels. In addition to process optimization, DoE results also allowed the flexibility of manipulating the performance of OCM reaction products. A C2 selectivity of 61% and a methane conversion of 18% were found to be optimum at 800 °C, a CH4/O2 ratio of 7, and a pressure of 1 bar.
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Affiliation(s)
- Sultan Alturkistani
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), CCRC, Thuwal, Jeddah 23955-6900, Saudi Arabia
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), KAUST Catalysis
Center, Thuwal, Jeddah 23955-6900, Saudi Arabia
| | - Haoyi Wang
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), CCRC, Thuwal, Jeddah 23955-6900, Saudi Arabia
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), KAUST Catalysis
Center, Thuwal, Jeddah 23955-6900, Saudi Arabia
| | - Ribhu Gautam
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), CCRC, Thuwal, Jeddah 23955-6900, Saudi Arabia
| | - S. Mani Sarathy
- Physical
Sciences and Engineering Division, King
Abdullah University of Science and Technology (KAUST), CCRC, Thuwal, Jeddah 23955-6900, Saudi Arabia
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8
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Filardi LR, Yang F, Guo J, Kronawitter CX, Runnebaum RC. Surface basicity controls C-C coupling rates during carbon dioxide-assisted methane coupling over bifunctional Ca/ZnO catalysts. Phys Chem Chem Phys 2023; 25:9859-9867. [PMID: 36945899 DOI: 10.1039/d3cp00332a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Carbon dioxide-assisted coupling of methane offers an approach to chemically upgrade two greenhouse gases and components of natural gas to produce ethylene and syngas. Prior research on this reaction has concentrated efforts on catalyst discovery, which has indicated that composites comprised of both reducible and basic oxides are especially promising. There is a need for detailed characterization of these bifunctional oxide systems to provide a more fundamental understanding of the active sites and their roles in the reaction. We studied the dependence of physical and electronic properties of Ca-modified ZnO materials on Ca content via X-ray photoelectron and absorption spectroscopies, electron microscopy, and infrared spectroscopic temperature-programmed desorption (IR-TPD). It was found that introduction of only 0.6 mol% Ca onto a ZnO surface is necessary to induce significant improvement in the catalytic production of C2 species: C2 selectivity increases from 5% on un-modified ZnO to 58%, at similar conversions. Evidence presented shows that this selectivity increase results from the formation of an interface between the basic CaO and reducible ZnO phases. The basicity of these interface sites correlates directly with catalytic activity over a wide composition range, and this relationship indicates that moderate CO2 adsorption strength is optimal for CH4 coupling. These results demonstrate, for the first time to our knowledge, a volcano-type relationship between CO2-assisted CH4 coupling activity and catalyst surface basicity, which can inform further catalyst development.
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Affiliation(s)
- Leah R Filardi
- Department of Chemical Engineering, University of California Davis, Davis, CA 95616, USA.
| | - Feipeng Yang
- Advanced Light Source, Lawrence Berkeley Nation Laboratory, Berkeley, CA 94720, USA
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley Nation Laboratory, Berkeley, CA 94720, USA
| | - Coleman X Kronawitter
- Department of Chemical Engineering, University of California Davis, Davis, CA 95616, USA.
| | - Ron C Runnebaum
- Department of Chemical Engineering, University of California Davis, Davis, CA 95616, USA.
- Department of Viticulture and Enology, University of California Davis, Davis, CA 95616, USA
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9
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Catalytic methane removal to mitigate its environmental effect. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1487-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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10
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Xu J, Xi R, Gong Y, Xu X, Liu Y, Zhong X, Fang X, Wang X. Constructing Y 2B 2O 7 (B = Ti, Sn, Zr, Ce) Compounds to Disclose the Effect of Surface Acidity-Basicity on Product Selectivity for Oxidative Coupling of Methane (OCM). Inorg Chem 2022; 61:11419-11431. [PMID: 35819003 DOI: 10.1021/acs.inorgchem.2c01754] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To investigate the influence of surface acidity and basicity on the OCM reaction, four pure-phase Y2B2O7 (B = Ti, Sn, Zr, Ce) compounds have been purposely constructed. The exquisite phase structure change results in the generation of different amounts of surface active O2- and O- sites, which affects CH4 molecule activation. Furthermore, both Lewis acidic sites and basic sites are formed on the catalysts in different amounts, which are related to the lattice disorder extent and the choice of A- and B-site elements. It is elucidated with strong evidence that the surface basic sites are favorable to C2 product selectivity, but the surface acidic sites lead to deep oxidation of CH4 and the coupling products to form COx. To design and fabricate Y2B2O7 catalysts with better C2 product selectivity for the reaction, a disordered defect fluorite structure should be engineered with A- and B- site elements having appropriate basicity.
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Affiliation(s)
- Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Rong Xi
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Ying Gong
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Yameng Liu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Xusheng Zhong
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, P. R. China
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11
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Optimization of the Oxidative Coupling of Methane Process for Ethylene Production. Processes (Basel) 2022. [DOI: 10.3390/pr10061085] [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
The oxidative coupling of methane (OCM) process is considered an intriguing route for the production of ethylene, one of the most demanded petrochemical products on the market. Ethylene can be produced by various methods, but the most widely used is the steam cracking process. However, due to the current instability of the crude oil market and the shale gas revolution, the production of olefins from natural gas has opened a new path for companies to mitigate the high demand for crude oil while utilizing an abundant amount of natural gas. In this work, the OCM process was compared with other existing processes, and the process was simulated using Aspen HYSYS. The flowsheet was divided into four sections, namely (i) the reaction section, (ii) the water removal section, (iii) the carbon dioxide capture section, and (iv) the ethylene purification section. Each section was thoroughly discussed, and the heat integration of the process was performed to ensure maximum energy utilization. The heat exchanger network was constructed, and the results show that the heating utility can be reduced by more than 95% (from 76567 kW to 2107.5 kW) and the cooling utility can be reduced by more than 60% (from 116398 kW to 41939.2 kW) at an optimum minimum temperature difference of 25 °C. In addition, a case study on the recovery of the high exothermic heat of reaction for power production shows that 16.68 MW can be produced through the cycle, which can cover the total cost of compression.
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12
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Kovarik S, Robles R, Schlitz R, Seifert TS, Lorente N, Gambardella P, Stepanow S. Electron Paramagnetic Resonance of Alkali Metal Atoms and Dimers on Ultrathin MgO. NANO LETTERS 2022; 22:4176-4181. [PMID: 35512394 DOI: 10.1021/acs.nanolett.2c00980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electron paramagnetic resonance (EPR) can provide unique insight into the chemical structure and magnetic properties of dopants in oxide and semiconducting materials that are of interest for applications in electronics, catalysis, and quantum sensing. Here, we demonstrate that EPR in combination with scanning tunneling microscopy (STM) allows for probing the bonding and charge state of alkali metal atoms on an ultrathin magnesium oxide layer on a Ag substrate. We observe a magnetic moment of 1 μB for Li2, LiNa, and Na2 dimers corresponding to spin radicals with a charge state of +1e. Single alkali atoms have the same charge state and no magnetic moment. The ionization of the adsorbates is attributed to charge transfer through the oxide to the metal substrate. Our work highlights the potential of EPR-STM to provide insight into dopant atoms that are relevant for the control of the electrical properties of surfaces and nanodevices.
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Affiliation(s)
- Stepan Kovarik
- Department of Materials, ETH Zurich, Hönggerbergring 64, Zürich CH-8093, Switzerland
| | - Roberto Robles
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, San Sebastián 20018, Spain
| | - Richard Schlitz
- Department of Materials, ETH Zurich, Hönggerbergring 64, Zürich CH-8093, Switzerland
| | - Tom Sebastian Seifert
- Department of Materials, ETH Zurich, Hönggerbergring 64, Zürich CH-8093, Switzerland
- Department of Physics, Freie Universität Berlin, Berlin 14195, Germany
| | - Nicolas Lorente
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, San Sebastián 20018, Spain
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, San Sebastián 20018, Spain
| | - Pietro Gambardella
- Department of Materials, ETH Zurich, Hönggerbergring 64, Zürich CH-8093, Switzerland
| | - Sebastian Stepanow
- Department of Materials, ETH Zurich, Hönggerbergring 64, Zürich CH-8093, Switzerland
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13
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Use of Oxidative Dehydrogenation of Ethane as a Supplemental Catalytic Reactor Configuration for Oxidative Coupling of Methane Process as an Alternative Way to Increase C2H4 Amount. Top Catal 2022. [DOI: 10.1007/s11244-022-01575-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Matsumoto T, Ishikawa S, Saito M, Ueda W, Motohashi T. Studies on activation factors for oxidative coupling of methane over lithium-based silicate/germanate catalysts. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01641e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Activation factors for improving oxidative coupling of methane (OCM) catalytic performance have been identified. Potential OCM catalysts, Li4SiO4 and Li4GeO4, have been discovered.
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Affiliation(s)
- Tomohiro Matsumoto
- Department of Materials and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
| | - Satoshi Ishikawa
- Department of Materials and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
| | - Miwa Saito
- Department of Materials and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
| | - Wataru Ueda
- Department of Materials and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
| | - Teruki Motohashi
- Department of Materials and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
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15
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Thyssen VV, Vilela VB, de Florio DZ, Ferlauto AS, Fonseca FC. Direct Conversion of Methane to C 2 Hydrocarbons in Solid-State Membrane Reactors at High Temperatures. Chem Rev 2021; 122:3966-3995. [PMID: 34962796 DOI: 10.1021/acs.chemrev.1c00447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Direct conversion of methane to C2 compounds by oxidative and nonoxidative coupling reactions has been intensively studied in the past four decades; however, because these reactions have intrinsic severe thermodynamic constraints, they have not become viable industrially. Recently, with the increasing availability of inexpensive "green electrons" coming from renewable sources, electrochemical technologies are gaining momentum for reactions that have been challenging for more conventional catalysis. Using solid-state membranes to control the reacting species and separate products in a single step is a crucial advantage. Devices using ionic or mixed ionic-electronic conductors can be explored for methane coupling reactions with great potential to increase selectivity. Although these technologies are still in the early scaling stages, they offer a sustainable path for the utilization of methane and benefit from the advances in both solid oxide fuel cells and electrolyzers. This review identifies promising developments for solid-state methane conversion reactors by assessing multifunctional layers with microstructural control; combining solid electrolytes (proton and oxygen ion conductors) with active and selective electrodes/catalysts; applying more efficient reactor designs; understanding the reaction/degradation mechanisms; defining standards for performance evaluation; and carrying techno-economic analysis.
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Affiliation(s)
- Vivian Vazquez Thyssen
- Nuclear and Energy Research Institute (IPEN-CNEN), Av. Lineu Prestes, 2242, 05508-000 São Paulo, SP, Brazil
| | - Vanessa Bezerra Vilela
- Nuclear and Energy Research Institute (IPEN-CNEN), Av. Lineu Prestes, 2242, 05508-000 São Paulo, SP, Brazil
| | - Daniel Zanetti de Florio
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC (UFABC), Av. dos Estados, 5001, 09210-580 Santo André, SP, Brazil
| | - Andre Santarosa Ferlauto
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC (UFABC), Av. dos Estados, 5001, 09210-580 Santo André, SP, Brazil
| | - Fabio Coral Fonseca
- Nuclear and Energy Research Institute (IPEN-CNEN), Av. Lineu Prestes, 2242, 05508-000 São Paulo, SP, Brazil
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16
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Oxidative coupling of methane over Y2O3 and Sr–Y2O3 nanorods. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-02085-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Zhou Q, Wang ZQ, Li Z, Wang J, Xu M, Zou S, Yang J, Pan Y, Gong XQ, Xiao L, Fan J. CH 3•-Generating Capability as a Reactivity Descriptor for Metal Oxides in Oxidative Coupling of Methane. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03496] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiuyue Zhou
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
| | - Zhi-Qiang Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry, and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhinian Li
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
| | - Junxing Wang
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
| | - Minggao Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Shihui Zou
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
| | - Jiuzhong Yang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Xue-Qing Gong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry, and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liping Xiao
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
| | - Jie Fan
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310036, China
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18
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Wang Y, Yang X, Hou C, Yin F, Wang G, Zhu X, Jiang G, Li C. Improved Catalytic Activity and Stability of Ba Substituted SrTiO
3
Perovskite for Oxidative Coupling of Methane. ChemCatChem 2021. [DOI: 10.1002/cctc.202100859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yue Wang
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Xiao Yang
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Chenxiao Hou
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Fumin Yin
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Guowei Wang
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Xiaolin Zhu
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
| | - Guiyuan Jiang
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 P. R. China
| | - Chunyi Li
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 P. R. China
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19
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Du JH, Qian K, Wang Y, Huang W, Peng L. 7Li NMR investigations of Li/MgO catalysts for oxidative coupling of methane. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Zou S, Li Z, Zhou Q, Pan Y, Yuan W, He L, Wang S, Wen W, Liu J, Wang Y, Du Y, Yang J, Xiao L, Kobayashi H, Fan J. Surface coupling of methyl radicals for efficient low-temperature oxidative coupling of methane. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63756-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Arinaga AM, Ziegelski MC, Marks TJ. Alternative Oxidants for the Catalytic Oxidative Coupling of Methane. Angew Chem Int Ed Engl 2021; 60:10502-10515. [PMID: 33045141 DOI: 10.1002/anie.202012862] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Indexed: 11/06/2022]
Abstract
The catalytic oxidative coupling of methane (OCM) to C2 hydrocarbons with oxygen (O2 -OCM) has garnered renewed worldwide interest in the past decade due to the emergence of enormous new shale gas resources. However, the C2 selectivity of typical OCM processes is significantly challenged by overoxidation to COx products. Other gaseous reagents such as N2 O, CO2 , and S2 have been investigated to a far lesser extent as alternative, milder oxidants to replace O2 . Although several authoritative review articles have summarized OCM research progress in depth, recent oxidative coupling developments using alternative oxidants (X-OCM) have not been overviewed in detail. In this perspective, we review and analyze OCM research results reporting the implementation of N2 O, CO2 , S2 , and other non-O2 oxidants, highlighting the unique chemistries of these systems and their advantages/challenges compared to O2 -OCM. Current outlook and potential areas for future study are also discussed.
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Affiliation(s)
- Allison M Arinaga
- Department of Chemistry and Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Morgan C Ziegelski
- Department of Chemical and Biological Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA, 30332, USA
| | - Tobin J Marks
- Department of Chemistry and Center for Catalysis and Surface Science, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
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22
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Wang Y, Hu P, Yang J, Zhu YA, Chen D. C-H bond activation in light alkanes: a theoretical perspective. Chem Soc Rev 2021; 50:4299-4358. [PMID: 33595008 DOI: 10.1039/d0cs01262a] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkanes are the major constituents of natural gas and crude oil, the feedstocks for the chemical industry. The efficient and selective activation of C-H bonds can convert abundant and low-cost hydrocarbon feedstocks into value-added products. Due to the increasing global demand for light alkenes and their corresponding polymers as well as synthesis gas and hydrogen production, C-H bond activation of light alkanes has attracted widespread attention. A theoretical understanding of C-H bond activation in light hydrocarbons via density functional theory (DFT) and microkinetic modeling provides a feasible approach to gain insight into the process and guidelines for designing more efficient catalysts to promote light alkane transformation. This review describes the recent progress in computational catalysis that has addressed the C-H bond activation of light alkanes. We start with direct and oxidative C-H bond activation of methane, with emphasis placed on kinetic and mechanistic insights obtained from DFT assisted microkinetic analysis into steam and dry reforming, and the partial oxidation dependence on metal/oxide surfaces and nanoparticle size. Direct and oxidative activation of the C-H bond of ethane and propane on various metal and oxide surfaces are subsequently reviewed, including the elucidation of active sites, intriguing mechanisms, microkinetic modeling, and electronic features of the ethane and propane conversion processes with a focus on suppressing the side reaction and coke formation. The main target of this review is to give fundamental insight into C-H bond activation of light alkanes, which can provide useful guidance for the optimization of catalysts in future research.
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Affiliation(s)
- Yalan Wang
- Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway.
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23
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Doped samarium oxide xerogels for oxidative coupling of methane—Effects of high-valence dopants at very low concentrations. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Abstract
In this work, Ho2O3 nanosheets were synthesized by a hydrothermal method. A series of Sr-modified Ho2O3 nanosheets (Sr-Ho2O3-NS) with a Sr/Ho molar ratio between 0.02 and 0.06 were prepared via an impregnation method. These catalysts were characterized by several techniques such as XRD, N2 adsorption, SEM, TEM, XPS, O2-TPD (temperature-programmed desorption), and CO2-TPD, and they were studied with respect to their performances in the oxidative coupling of methane (OCM). In contrast to Ho2O3 nanoparticles, Ho2O3 nanosheets display greater CH4 conversion and C2-C3 selectivity, which could be related to the preferentially exposed (222) facet on the surface of the latter catalyst. The incorporation of small amounts of Sr into Ho2O3 nanosheets leads to a higher ratio of (O− + O2−)/O2− as well as an enhanced amount of chemisorbed oxygen species and moderate basic sites, which in turn improves the OCM performance. The optimal catalytic behavior is achievable on the 0.04Sr-Ho2O3-NS catalyst with a Sr/Ho molar ratio of 0.04, which gives a 24.0% conversion of CH4 with 56.7% selectivity to C2-C3 at 650 °C. The C2-C3 yield is well correlated with the amount of moderate basic sites present on the catalysts.
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25
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Alkali-Added Catalysts Based on LaAlO3 Perovskite for the Oxidative Coupling of Methane. CHEMENGINEERING 2021. [DOI: 10.3390/chemengineering5010014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, we aimed to enhance the catalytic activity of perovskite catalysts and elucidate their catalytic behavior in the oxidative coupling of methane (OCM), using alkali-added LaAlO3 perovskite catalysts. We prepared LaAlO3_XY (X = Li, Na, K, Y = mol %) catalysts and applied them to the OCM reaction. The results showed that the alkali-added catalysts’ activities were promoted compared to the LaAlO3 catalyst. In this reaction, ethane was first synthesized through the dimerization of methyl radicals, which were produced from the reaction of methane and oxygen vacancy in the perovskite catalysts. The high ethylene selectivity of the alkali-added catalysts originated from their abundance of electrophilic lattice oxygen species, facilitating the selective formation of C2 hydrocarbons from ethane. The high COx (carbon monoxide and carbon dioxide) selectivity of the LaAlO3 catalyst originated from its abundance of nucleophilic lattice oxygen species, favoring the selective production of COx from ethane. We concluded that electrophilic lattice oxygen species play a significant role in producing ethylene. We obtained that alkali-adding could be an effective method for improving the catalytic activity of perovskite catalysts in the OCM reaction.
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26
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Lomonosov VI, Sinev MY. Analysis of Heterogeneous-Homogeneous Model of Oxidative Coupling of Methane Using Kinetic Scheme Reduction Procedure. KINETICS AND CATALYSIS 2021. [DOI: 10.1134/s0023158420060063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Xi R, Xu J, Zhang Y, Zhang Z, Xu X, Fang X, Wang X. The enhancement effects of BaX2 (X = F, Cl, Br) on SnO2-based catalysts for the oxidative coupling of methane (OCM). Catal Today 2021. [DOI: 10.1016/j.cattod.2020.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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28
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Arinaga AM, Ziegelski MC, Marks TJ. Alternative Oxidants for the Catalytic Oxidative Coupling of Methane. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Allison M. Arinaga
- Department of Chemistry and Center for Catalysis and Surface Science Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Morgan C. Ziegelski
- Department of Chemical and Biological Engineering Georgia Institute of Technology 311 Ferst Drive NW Atlanta GA 30332 USA
| | - Tobin J. Marks
- Department of Chemistry and Center for Catalysis and Surface Science Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
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29
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Morphology Effects of Nanoscale Er2O3 and Sr-Er2O3 Catalysts for Oxidative Coupling of Methane. Catal Letters 2021. [DOI: 10.1007/s10562-020-03503-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Petrolini DD, Marcos FFC, Lucrédio AF, Mastelaro VR, Assaf JM, Assaf EM. Exploiting oxidative coupling of methane performed over La 2(Ce 1−xMg x) 2O 7−δ catalysts with disordered defective cubic fluorite structure. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00187f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidative coupling of methane reaction to produce C2 compounds was studied using La2(Ce1−xMgx)2O7−δ catalysts with disordered defective cubic fluorite structures, varying the Mg content (0.0 ≤ x ≤ 1.0), CH4/O2 ratio, temperature, and WHSV.
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Affiliation(s)
- Davi D. Petrolini
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | | | | | | | | | - Elisabete M. Assaf
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
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31
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Aydin Z, Zanina A, Kondratenko VA, Eckelt R, Bartling S, Lund H, Rockstroh N, Kreyenschulte CR, Linke D, Kondratenko EV. Elucidating the effects of individual components in K xMnO y/SiO 2 and water on selectivity enhancement in the oxidative coupling of methane. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01081f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To date, a great number of various materials have been tested for the oxidative coupling of methane (OCM).
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Affiliation(s)
- Zeynep Aydin
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Anna Zanina
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Vita A. Kondratenko
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Reinhard Eckelt
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Stephan Bartling
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Henrik Lund
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Nils Rockstroh
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | | | - David Linke
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
| | - Evgenii V. Kondratenko
- Leibniz-Institut für Katalyse e.V, Albert-Einstein-Strasse 29 a, D-18059 Rostock, Germany
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32
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Qian K, You R, Guan Y, Wen W, Tian Y, Pan Y, Huang W. Single-Site Catalysis of Li-MgO Catalysts for Oxidative Coupling of Methane Reaction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03896] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kun Qian
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Rui You
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yong Guan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Wu Wen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Yangchao Tian
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Weixin Huang
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
- Dalian National Laboratory for Clean Energy, Dalian 116023, China
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33
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Zhang Y, Xu J, Xu X, Xi R, Liu Y, Fang X, Wang X. Tailoring La2Ce2O7 catalysts for low temperature oxidative coupling of methane by optimizing the preparation methods. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.06.060] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Kidamorn P, Tiyatha W, Chukeaw T, Niamnuy C, Chareonpanich M, Sohn H, Seubsai A. Synthesis of Value-Added Chemicals via Oxidative Coupling of Methanes over Na 2WO 4-TiO 2-MnO x /SiO 2 Catalysts with Alkali or Alkali Earth Oxide Additives. ACS OMEGA 2020; 5:13612-13620. [PMID: 32566826 PMCID: PMC7301378 DOI: 10.1021/acsomega.0c00537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
Na2WO4-TiO2-MnO x /SiO2 (SM) catalysts with alkali (Li, K, Rb, Cs) or alkali earth (Mg, Ca, Sr, Ba) oxide additives, which were prepared using incipient wetness impregnation, were investigated for oxidative coupling of methane (OCM) to value-added hydrocarbons (C2+). A screening test that was performed on the catalysts revealed that SM with Sr (SM-Sr) had the highest yield of C2+. X-ray photoelectron spectroscopy analyses indicated that the catalysts with a relatively low binding energy of W 4f7/2 facilitated a high CH4 conversion. A combination of crystalline MnTiO3, Mn2O3, α-cristobalite, Na2WO4, and TiO2 phases was identified as an essential component for a remarkable improvement in the activity of the catalysts in the OCM reaction. In attempts to optimize the C2+ yield, 0.25 wt % Sr onto SM-Sr achieved the highest C2+ yield at 22.9% with a 62.5% C2+ selectivity and a 36.6% CH4 conversion. A stability test of the optimal catalyst showed that after 24 h of testing, its activity decreased by 18.7%.
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Affiliation(s)
- Phattaradit Kidamorn
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Worapinit Tiyatha
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Thanaphat Chukeaw
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
- Center
of Excellence on Petrochemical and Materials Technology, Kasetsart University, Bangkok 10900, Thailand
| | - Chalida Niamnuy
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
- Research
Network of NANOTEC−KU on NanoCatalysts and NanoMaterials for
Sustainable Energy and Environment, Kasetsart
University, Bangkok 10900, Thailand
| | - Metta Chareonpanich
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
- Center
of Excellence on Petrochemical and Materials Technology, Kasetsart University, Bangkok 10900, Thailand
- Research
Network of NANOTEC−KU on NanoCatalysts and NanoMaterials for
Sustainable Energy and Environment, Kasetsart
University, Bangkok 10900, Thailand
| | - Hiesang Sohn
- Department
of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul 01897, Korea
| | - Anusorn Seubsai
- Department
of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
- Center
of Excellence on Petrochemical and Materials Technology, Kasetsart University, Bangkok 10900, Thailand
- Research
Network of NANOTEC−KU on NanoCatalysts and NanoMaterials for
Sustainable Energy and Environment, Kasetsart
University, Bangkok 10900, Thailand
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35
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Hao YJ, Tian LG, Duan E, Liu J, Qi TY, Kong WQ, Qi XH, Liu X, Liu Y, Zhao J, Li FT. Low-Temperature Methane Oxidation Triggered by Peroxide Radicals over Noble-Metal-Free MgO Catalyst. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21761-21771. [PMID: 32298073 DOI: 10.1021/acsami.0c04083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Methane is a greenhouse gas that contributes to global warming. Hence, effectively removing the low concentration (<1000 ppm) of methane in the environment is an issue that deserves research in the field of catalysis. In this study, oxygen-magnesium bivacancies are simultaneously imbedded into MgO by designing an in situ reduction combustion atmosphere for oxygen release and substituting magnesium with carbon to induce the formation of magnesium vacancies. The DFT calculations reveal that the surface electron density of MgO is improved by the oxygen vacancy structure and the substitution of Mg by C in bulk; this accelerates migration of the charge from the material surface to the adsorbed oxygen species, which leads to abundant surface peroxide species that enable activation and oxidation of methane at a low temperature (below 200 °C). This work could provide a concept for developing non-noble or transition metal oxides for low-temperature activation and conversion of alkanes in the thermocatalytic field through reactive oxygen species.
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Affiliation(s)
- Ying-Juan Hao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
- International Joint Laboratory of New Energy, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Li-Gang Tian
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Erhong Duan
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Jixing Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Tian-Yuan Qi
- Institute of Computational Quantum Chemistry, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Wei-Qi Kong
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xue-Han Qi
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xinying Liu
- International Joint Laboratory of New Energy, Hebei University of Science and Technology, Shijiazhuang 050018, China
- Institute for the Development of Energy for African Sustainability (IDEAS), University of South Africa (UNISA), Florida 1710, South Africa
| | - Ying Liu
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Jun Zhao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Fa-Tang Li
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
- International Joint Laboratory of New Energy, Hebei University of Science and Technology, Shijiazhuang 050018, China
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36
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Matsumoto T, Saito M, Ishikawa S, Fujii K, Yashima M, Ueda W, Motohashi T. High Catalytic Activity of Crystalline Lithium Calcium Silicate for Oxidative Coupling of Methane Originated from Crystallographic Joint Effects of Multiple Cations. ChemCatChem 2020. [DOI: 10.1002/cctc.201902241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tomohiro Matsumoto
- Department of Materials and Life ChemistryKanagawa University Yokohama 221-8686 Japan
| | - Miwa Saito
- Department of Materials and Life ChemistryKanagawa University Yokohama 221-8686 Japan
| | - Satoshi Ishikawa
- Department of Materials and Life ChemistryKanagawa University Yokohama 221-8686 Japan
| | - Kotaro Fujii
- Department of Chemistry School of ScienceTokyo Institute of Technology Tokyo 152-8551 Japan
| | - Masatomo Yashima
- Department of Chemistry School of ScienceTokyo Institute of Technology Tokyo 152-8551 Japan
| | - Wataru Ueda
- Department of Materials and Life ChemistryKanagawa University Yokohama 221-8686 Japan
| | - Teruki Motohashi
- Department of Materials and Life ChemistryKanagawa University Yokohama 221-8686 Japan
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37
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Wang S, Li S, Dixon DA. Mechanism of selective and complete oxidation in La2O3-catalyzed oxidative coupling of methane. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00141d] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic mechanism and reaction network of oxidative coupling of methane over La2O3 are thoroughly investigated by density functional theory calculations.
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Affiliation(s)
- Shibin Wang
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Shenggang Li
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering
- Shanghai Advanced Research Institute
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - David A. Dixon
- Department of Chemistry and Biochemistry
- The University of Alabama
- Tuscaloosa
- USA
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38
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Amano F, Akamoto C, Ishimaru M, Inagaki S, Yoshida H. Pressure-induced dehydrogenative coupling of methane to ethane by platinum-loaded gallium oxide photocatalyst. Chem Commun (Camb) 2020; 56:6348-6351. [DOI: 10.1039/d0cc01730b] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Pt/Ga2O3 induced photocatalytic dehydrogenative coupling of CH4 to yield C2H6 under high CH4 pressure.
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Affiliation(s)
- Fumiaki Amano
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
- Precursory Research for Embryonic Science and Technology (PRESTO)
| | - Chiho Akamoto
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
| | - Mizuki Ishimaru
- Department of Chemical and Environmental Engineering
- The University of Kitakyushu
- Fukuoka 808-0135
- Japan
| | - Satoshi Inagaki
- Precursory Research for Embryonic Science and Technology (PRESTO)
- Japan Science and Technology Agency (JST)
- Saitama 332-0012
- Japan
- Division of Materials Science and Chemical Engineering
| | - Hisao Yoshida
- Graduate School of Human and Environmental Studies
- Kyoto University
- Kyoto 606-8501
- Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB)
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39
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Photoionization Mass Spectrometry for Online Detection of Reactive and Unstable Gas‐Phase Intermediates in Heterogeneous Catalytic Reactions. ChemCatChem 2019. [DOI: 10.1002/cctc.201901639] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Hao J, Schwach P, Fang G, Guo X, Zhang H, Shen H, Huang X, Eggart D, Pan X, Bao X. Enhanced Methane Conversion to Olefins and Aromatics by H-Donor Molecules under Nonoxidative Condition. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01771] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianqi Hao
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
- University of Chinese Academy of Sciences, Yuquan Road 19A, Shijingshan District, Beijing 100049, China
| | - Pierre Schwach
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Guangzong Fang
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Xiaoguang Guo
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Hailei Zhang
- Key Laboratory of Nuclear Physics and Ion-beam Application, Institute of Modern Physics, Fudan University, Shanghai 200433, China
| | - Hao Shen
- Key Laboratory of Nuclear Physics and Ion-beam Application, Institute of Modern Physics, Fudan University, Shanghai 200433, China
| | - Xin Huang
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Daniel Eggart
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Kaiserstraße 12, Karlsruhe 76131, Germany
| | - Xiulian Pan
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
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41
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Gao Y, Neal L, Ding D, Wu W, Baroi C, Gaffney AM, Li F. Recent Advances in Intensified Ethylene Production—A Review. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02922] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yunfei Gao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Luke Neal
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Dong Ding
- Idaho National Laboratory, P.O. Box 1625,
MS 2203, Idaho Falls, Idaho 83415, United States
| | - Wei Wu
- Idaho National Laboratory, P.O. Box 1625,
MS 2203, Idaho Falls, Idaho 83415, United States
| | - Chinmoy Baroi
- Idaho National Laboratory, P.O. Box 1625,
MS 2203, Idaho Falls, Idaho 83415, United States
| | - Anne M. Gaffney
- Idaho National Laboratory, P.O. Box 1625,
MS 2203, Idaho Falls, Idaho 83415, United States
| | - Fanxing Li
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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42
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Kwon D, Yang I, Sim Y, Ha JM, Jung JC. A K2NiF4-type La2Li0.5Al0.5O4 catalyst for the oxidative coupling of methane (OCM). CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.05.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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43
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Sinev M, Ponomareva E, Sinev I, Lomonosov V, Gordienko Y, Fattakhova Z, Shashkin D. Oxygen pathways in oxidative coupling of methane and related processes. Case study: NaWMn/SiO2 catalyst. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.06.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Lim S, Choi JW, Suh DJ, Song KH, Ham HC, Ha JM. Combined experimental and density functional theory (DFT) studies on the catalyst design for the oxidative coupling of methane. J Catal 2019. [DOI: 10.1016/j.jcat.2019.04.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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45
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Sato A, Ogo S, Takeno Y, Takise K, Seo JG, Sekine Y. Electric Field and Mobile Oxygen Promote Low-Temperature Oxidative Coupling of Methane over La 1-x Ca x AlO 3-δ Perovskite Catalysts. ACS OMEGA 2019; 4:10438-10443. [PMID: 31460139 PMCID: PMC6648777 DOI: 10.1021/acsomega.9b00594] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 05/31/2019] [Indexed: 06/10/2023]
Abstract
Oxidative coupling of methane (OCM) over La1-x M x AlO3-δ (M = Ca, Sr, Ba; x = 0, 0.1, 0.2, 0.3) in an electric field at low temperature (423 K) was investigated. Among the tested catalysts, the La0.7Ca0.3AlO3-δ catalyst showed the highest performance in terms of C2H6 + C2H4 yield (11.1%). Surface mobile oxygen species (O2 2- or O-), which were considered as active oxygen species for the OCM reaction, increased with increasing Ca doping amount, and thereby the La0.7Ca0.3AlO3-δ catalyst showed the best catalytic activity.
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Affiliation(s)
- Ayaka Sato
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Shuhei Ogo
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
- PRESTO, Japan Science and Technology Agency
(JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Yuna Takeno
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Kent Takise
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Jeong Gil Seo
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
- Department
of Energy Science and Technology, Myongji
University, Nam-dong, Cheoin-gu, Yongin-si, Gyeonggi-do 449-728 South Korea
| | - Yasushi Sekine
- Department
of Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
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46
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Huang ZQ, Zhang T, Chang CR, Li J. Dynamic Frustrated Lewis Pairs on Ceria for Direct Nonoxidative Coupling of Methane. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00838] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zheng-Qing Huang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Tianyu Zhang
- Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Chun-Ran Chang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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47
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48
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Xu J, Zhang Y, Xu X, Fang X, Xi R, Liu Y, Zheng R, Wang X. Constructing La2B2O7 (B = Ti, Zr, Ce) Compounds with Three Typical Crystalline Phases for the Oxidative Coupling of Methane: The Effect of Phase Structures, Superoxide Anions, and Alkalinity on the Reactivity. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00022] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Yan Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Rong Xi
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Yameng Liu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
| | - Renyang Zheng
- Research Institute of Petroleum Processing (RIPP), SINOPEC, 18 Xueyuan Road, Haidian
District, Beijing 100083, China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, 330031, People’s Republic of China
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49
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Nekoei AR, Haghgoo S. DFT investigation on some nitrogen-doped fullerenes with more antiradical and antioxidant activities than C60. Struct Chem 2019. [DOI: 10.1007/s11224-019-01311-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Rhodes CJ. Reactive Radicals on Reactive Surfaces: Heterogeneous Processes in Catalysis and Environmental Pollution Control. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967405779134038] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Many reactions that occur on solid surfaces are mediated by free radicals. A review is presented of both mechanistic and practical investigations in relation to catalysis and environmental applications. The review begins with actual imaging of surface adsorbed reactive radicals using scanning tunnelling microscopy (STM), and then discusses a range of examples, mainly as underpinned by electron spin resonance (ESR) measurements. Included are surface defects and their reactions, studies of the redox behaviour of zeolites, and the use of radicals adsorbed in zeolites as molecular surface probes of diffusion and reactivity within these important materials. Photocatalysis, mainly using TiO2-based materials, is reviewed both from the fundamental perspective and in terms of some practical examples relating to pollution control. Other reactive oxide surfaces are considered, including silica, and the nature of paramagnetic centres that may be induced thereon by a variety of activation procedures. Evidence is presented for the formation of radical species during heterogeneous reactions on metal surfaces. Finally, the role of free radical generation in creating and modifying polymer and nanomolecular systems is discussed, and the health implications of the ability of some solids such as quartz to generate reactive oxygen radicals in contact with biological media.
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