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Arakawa M, Kono S, Sekine Y, Terasaki A. Reaction of size-selected iron-oxide cluster cations with methane: a model study of rapid methane loss in Mars' atmosphere. Phys Chem Chem Phys 2024; 26:14684-14690. [PMID: 38716515 DOI: 10.1039/d4cp01337a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
We report gas-phase reactions of free iron-oxide clusters, FenOm+, and their Ar adducts with methane in the context of chemical processes in Mars' atmosphere. Methane activation was observed to produce FenOmCH2+/FenOmCD2+ and FenOmC+, where the reactivity exhibited size and composition dependence. For example, the rate coefficients of methane activation for Fe3O+ and Fe4O+ were estimated to be 1 × 10-13 and 3 × 10-13 cm3 s-1, respectively. Based on these reaction rate coefficients, the presence of iron-oxide clusters/particles with a density as low as 107 cm-3 in Mars' atmosphere would explain the rapid loss of methane observed recently by the Curiosity rover.
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Affiliation(s)
- Masashi Arakawa
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Satoshi Kono
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Yasuhito Sekine
- Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Akira Terasaki
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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2
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Yang Y, Zhao Y, He S. Conversion of CH
4
Catalyzed by Gas Phase Ions Containing Metals. Chemistry 2022; 28:e202200062. [DOI: 10.1002/chem.202200062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Yuan Yang
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yan‐Xia Zhao
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- Beijing National Laboratory for Molecular Sciences and CAS Research/Education Centre of Excellence in Molecular Sciences Beijing 100190 P. R. China
| | - Sheng‐Gui He
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Beijing National Laboratory for Molecular Sciences and CAS Research/Education Centre of Excellence in Molecular Sciences Beijing 100190 P. R. China
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3
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Wang MM, Zhao YX, Ding XL, Li W, He SG. Methane activation by heteronuclear diatomic AuRh + cation: comparison with homonuclear Au 2+ and Rh 2. Phys Chem Chem Phys 2020; 22:6231-6238. [PMID: 32129335 DOI: 10.1039/c9cp05699h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The ability to activate methane differs appreciably for different transition metals, and it is attractive to find the most suitable metal for the direct conversion of methane to value-added chemicals. Herein, we performed a comparative study on the reactions of CH4 with Au2+, AuRh+ and Rh2+ cations by mass-spectrometry based experiments and DFT-based theoretical analysis. Different reactivity has been found for these cations: Au2+ has the lowest reactivity, and it can activate methane but only produce H-Au2-CH3+ without H2 release; Rh2+ has the highest reactivity, and it can produce both carbene-type Rh2-CH2+ and carbyne-type H-Rh2-CH+ with H2 release; AuRh+ also has high reactivity to produce only AuRh-CH2+ with H2, avoiding the excessive dehydrogenation of CH4. Our theoretical results demonstrate that Rh is responsible for the high reactivity, while Au leads to selectivity, which may be caused by the unique intrinsic bonding properties of the metals.
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Affiliation(s)
- Meng-Meng Wang
- School of Mathematics and Physics, North China Electric Power University, Beinong Road 2, Huilongguan, Beijing 102206, P. R. China.
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Levin N, Lengyel J, Eckhard JF, Tschurl M, Heiz U. Catalytic Non-Oxidative Coupling of Methane on Ta 8O 2.. J Am Chem Soc 2020; 142:5862-5869. [PMID: 32125833 DOI: 10.1021/jacs.0c01306] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mass-selected Ta8O2+ cluster ions catalyze the transformation of methane in a gas-phase ion trap experiment via nonoxidative coupling into ethane and H2, which is a prospective reaction for the generation of valuable chemicals on an industrial scale. Systematic variation of the reaction conditions and the isotopic labeling of methane by deuterium allow for an unambiguous identification of a catalytic cycle. Comparison with the proposed catalytic cycle for tantalum-doped silica catalysts reveals surprising similarities as the mechanism of the C-C coupling step, but also peculiar differences like the mechanism of the eventual formation of molecular hydrogen and ethane. Therefore, this work not only supplies insights into the mechanisms of methane coupling reactions but also illustrates how the study of trapped ionic catalysts can contribute to the understanding of reactions, which are otherwise difficult to study.
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Affiliation(s)
- Nikita Levin
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Jozef Lengyel
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Jan F Eckhard
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Martin Tschurl
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Ueli Heiz
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
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Shuman NS, Ard SG, Sweeny BC, Pan H, Viggiano AA, Keyes NR, Guo H, Owen CJ, Armentrout PB. Au2+ cannot catalyze conversion of methane to ethene at low temperature. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00523d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The previously reported conversion of methane to ethene catalyzed by Au2+ at thermal energies is investigated through a combination of experiment and theory. The conversion is found not to occur, in-line with well-established thermodynamics.
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Affiliation(s)
- Nicholas S. Shuman
- Air Force Research Laboratory, Space Vehicles Directorate
- Kirtland AFB
- 87117 USA
| | - Shaun G. Ard
- Institute for Scientific Research
- Boston College
- Boston
- 02467 USA
| | - Brendan C. Sweeny
- National Research Council Research Associateship Program at Air Force Research Laboratory, Space Vehicles Directorate
- Kirtland AFB
- 87117 USA
| | - Hanqing Pan
- USRA Space Scholar at Air Force Research Laboratory, Space Vehicles Directorate
- Kirtland Air Force Base
- USA
| | - Albert A. Viggiano
- Air Force Research Laboratory, Space Vehicles Directorate
- Kirtland AFB
- 87117 USA
| | - Nicholas R. Keyes
- Department of Chemistry and Chemical Biology
- University of New Mexico
- Albuquerque
- 87131 USA
| | - Hua Guo
- Department of Chemistry and Chemical Biology
- University of New Mexico
- Albuquerque
- 87131 USA
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Li XN, Zou XP, He SG. Metal-mediated catalysis in the gas phase: A review. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62782-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Affiliation(s)
- Zhixun Luo
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - A. W. Castleman
- Departments
of Chemistry and Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Shiv N. Khanna
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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8
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Cooperative Effects in Clusters and Oligonuclear Complexes of Transition Metals in Isolation. STRUCTURE AND BONDING 2016. [DOI: 10.1007/430_2016_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Janssens E, Le HT, Lievens P. Adsorption of Propene on Neutral Gold Clusters in the Gas Phase. Chemistry 2015; 21:15256-62. [PMID: 26350334 DOI: 10.1002/chem.201500523] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Indexed: 11/10/2022]
Abstract
The adsorption of propene on neutral gold clusters is investigated in a collision cell under a few collision conditions. The adsorption reaction is studied by pressure-dependent kinetic measurements and delayed unimolecular dissociation of the excited Aun propene complexes. The cluster size (n=9-25) and temperature (T=90-300 K) dependence of the propene adsorption is analyzed. Strong size dependences of the absorption reaction are observed; a larger propene adsorption probability was found for gold clusters composed of an even number of atoms. Propene binding energies are estimated by comparison of the temperature-dependent unimolecular dissociation rates with rates obtained by using statistical RRKM modeling. The Aun -propene binding energies decrease non-monotonously with cluster size and are in the range of 1.2-0.85 eV for n=9-25. Finally, the bonding of C3 H6 on Aun is qualitatively described and similarities with the absorption of CO molecules on gold clusters are discussed.
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Affiliation(s)
- Ewald Janssens
- Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d-box 2414, 3001 Leuven (Belgium).
| | - Hai Thuy Le
- Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d-box 2414, 3001 Leuven (Belgium)
| | - Peter Lievens
- Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d-box 2414, 3001 Leuven (Belgium)
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Schwarz H. How and Why Do Cluster Size, Charge State, and Ligands Affect the Course of Metal-Mediated Gas-Phase Activation of Methane? Isr J Chem 2014. [DOI: 10.1002/ijch.201300134] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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