Molybdenum oxide structure on silica-supported catalysts studied by Raman spectroscopy and extended x-ray absorption fine structure spectroscopy

Journal Article · Thu May 05 00:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100320a037· OSTI ID:6977838

Kakuta, N; Tohji, K; Udagawa, Y

Raman spectroscopy and EXAFS (extended X-ray absorption fine structure) spectroscopy have been used to investigate the formation of molybdenum oxide on silica-supported catalysts. The existence and the structure of interaction species at low loadings are elucidated by both spectroscopies. The Raman data of the catalyst at higher loadings confirm the previously reported observations, that is, the presence of MoO/sub 3/ phase after the calcination at 773 K, while EXAFS spectra clearly demonstrate that the major molybdenum species is different from MoO/sub 3/ crystallite. The reason of the apparent contradiction is discussed.

• Research Organization: Institute for Molecular Science, Aichi (Japan)
• OSTI ID: 6977838
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:9; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
CATALYSIS
CATALYSTS
CHALCOGENIDES
DATA
EXPERIMENTAL DATA
FINE STRUCTURE
INFORMATION
LASER SPECTROSCOPY
MINERALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTROSCOPY
REFRACTORY METAL COMPOUNDS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTRA