Catalytic reactions on well-characterized vanadium oxide catalysts. 1. Oxidation of carbon monoxide

Journal Article · Thu Jun 21 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150657a013· OSTI ID:6455848

Mori, K; Miyamoto, A; Murakami, Y

The oxidation of carbon monoxide over unsupported and supported vanadium oxide catalysts was investigated from the standpoint of structure sensitivity. The activity of unsupported V/sub 2/O/sub 5/ markedly decreased the turnover frequency, while the reduction-oxidation treatment of the fused catalyst increased it. The turnover frequency of V/sub 2/O/sub 5//TiO/sub 2/ with low V/sub 2/O/sub 5/ content was much smaller than that of the V/sub 2/O/sub 5//TiO/sub 2/ with high V/sub 2/O/sub 5/ content or the unsupported V/sub 2/O/sub 5/. Such a retarding effect of the TiO/sub 2/ support on the activity of the oxidation of carbon monoxide is in contrast to the known promoting effect of TiO/sub 2/ for the oxidations of various hydrocarbons. From these results coupled with the characterization of the catalysts, it was concluded that the oxidation of carbon monoxide on vanadium oxide catalysts is a structure-sensitive reaction and that the activity of surface defects such as steps, kinks, and vacancies is much higher than that of the surface V=O species in the smooth (010) face of V/sub 2/O/sub 5/. 39 references, 9 figures, 2 tables.

• Research Organization: Nagoya Univ., Japan
• OSTI ID: 6455848
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:13; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
NONMETALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES