Oxidation of CO by gas-phase atomic clusters is being actively studied to understand the molecular-level mechanisms of heterogeneous CO oxidation over related catalytic surfaces. However, it is experimentally challenging to study CO oxidation by neutral heteronuclear metal oxide clusters because of the difficulty of cluster ionization and detection without fragmentation. Herein, the neutral AuVO2−4 clusters were experimentally generated and their reactions with CO and O2 were studied. The experimental results showed that CO adsorption is the dominant channel on the interactions of AuVO4 and AuVO3 with CO, and AuVO2 can pick up an O2 molecule to generate AuVO4. Theoretical studies indicated that the oxidation of the trapped CO in AuVO3,4CO into CO2 is exothermic while the reaction barriers have to be overcome at the elevated temperatures. A catalytic cycle for CO oxidation by AuVO2−4 is proposed.
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April 2019
Research Article|
April 01 2019
CO oxidation by neutral gold-vanadium oxide clusters†
Shu-hua Ou;
Shu-hua Ou
a
School of Chemistry and Chemical Engineering, South China University of Technology
, Guangzhou 510641, China
b
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
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Jiao-jiao Chen;
Jiao-jiao Chen
b
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
c
University of Chinese Academy of Sciences
, Beijing 100049, China
d
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences
, Beijing 100190, China
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Xiao-na Li;
Xiao-na Li
*
b
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
d
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences
, Beijing 100190, China
*Authors to whom correspondence should be addressed. E-mail: [email protected], [email protected], [email protected]
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Li-na Wang;
Li-na Wang
b
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
c
University of Chinese Academy of Sciences
, Beijing 100049, China
d
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences
, Beijing 100190, China
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Tong-mei Ma;
Tong-mei Ma
*
a
School of Chemistry and Chemical Engineering, South China University of Technology
, Guangzhou 510641, China
*Authors to whom correspondence should be addressed. E-mail: [email protected], [email protected], [email protected]
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Sheng-gui He
Sheng-gui He
*
b
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences
, Beijing 100190, China
c
University of Chinese Academy of Sciences
, Beijing 100049, China
d
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences
, Beijing 100190, China
*Authors to whom correspondence should be addressed. E-mail: [email protected], [email protected], [email protected]
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*Authors to whom correspondence should be addressed. E-mail: [email protected], [email protected], [email protected]
†
Part of the special issue for “the 19th International Symposium on Small Particles and Inorganic Clusters”.
Chin. J. Chem. Phys. 32, 207–212 (2019)
Article history
Received:
December 31 2018
Accepted:
January 28 2019
Citation
Shu-hua Ou, Jiao-jiao Chen, Xiao-na Li, Li-na Wang, Tong-mei Ma, Sheng-gui He; CO oxidation by neutral gold-vanadium oxide clusters. Chin. J. Chem. Phys. 1 April 2019; 32 (2): 207–212. https://doi.org/10.1063/1674-0068/cjcp1812300
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