Surface Structures of Model Metal Catalysts in Reactant Gases.

Autor:	Tao FF; Departments of Chemical and Petroleum Engineering and Chemistry, University of Kansas , Lawrence, Kansas 66045, United States., Ralston WT; Department of Chemistry, University of California , Berkeley, California 94720, United States.; Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States., Liu H; Departments of Chemical and Petroleum Engineering and Chemistry, University of Kansas , Lawrence, Kansas 66045, United States., Somorjai GA; Department of Chemistry, University of California , Berkeley, California 94720, United States.; Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
Jazyk:	angličtina
Zdroj:	The journal of physical chemistry. B [J Phys Chem B] 2018 Jan 18; Vol. 122 (2), pp. 425-431. Date of Electronic Publication: 2017 Oct 05.
DOI:	10.1021/acs.jpcb.7b06950
Abstrakt:	Atomic scale knowledge of the surface structure of a metal catalyst is essential for fundamentally understanding the catalytic reactions performed on it. A correlation between the true atomic surface structure of a metal catalyst under reaction conditions and the corresponding catalytic performance is the key in pursuing mechanistic insight at a molecular level. Here the surface structures of model, metal catalysts in both ultrahigh vacuum (UHV) and gaseous environments of CO at a wide range of pressures are discussed. The complexity of observed surface structures in CO is illustrated, driving the necessity for visualization of the catalytic metals under realistic reaction conditions. Technical barriers for visualization of metal surfaces in situ at high temperature and high pressure are discussed.
Databáze:	MEDLINE
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