Catalytic reactions on well-characterized vanadium oxide catalysts. 2. Oxidation of ethylene

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

DOI:https://doi.org/10.1021/j150657a014· OSTI ID:6564153

Mori, K; Miyamoto, A; Murakami, Y

Catalytic activities of unsupported and supported vanadium oxides for ethylene oxidation were investigated in relation to the catalyst structures. From results of reaction rates and steady-state catalyst structures at various O/sub 2/ concentrations, the active oxygen species was found to be the surface V=O species. The specific activity of the surface V=O species, or the turnover frequency, on unsupported V/sub 2/O/sub 5/ catalyst did not change with the treatment of the catalyst: neither fusion nor reduction-oxidation treatment affected the turnover frequency. This indicates that ethylene oxidation on vanadium oxide catalyst is a structure-insensitive reaction. The turnover frequency for V/sub 2/O/sub 5//TiO/sub 2/ (anatase) was considerably higher than that for V/sub 2/O/sub 5//TiO/sub 2/ (rutile) or unsupported V/sub 2/O/sub 5/ at any V/sub 2/O/sub 5/ content. This indicates the promoting effect of TiO/sub 2/ (anatase) support on the activity of vanadium oxide and provides experimental evidence for the validity of previous inference in solid-state chemistry. 14 references, 4 figures, 1 table.

• Research Organization: Nagoya Univ., Japan
• OSTI ID: 6564153
• 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

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
ETHYLENE
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES