In situ FTIR spectroscopy of 1-butene and 1,3-butadiene selective oxidation to maleic anhydride on V-P-O catalysts
The selective oxidation of 1-butene and 1,3-butadiene was studied by transmission infrared spectroscopy. Vanadium-phosphorus-oxygen catalysts prepared by the reaction of V/sub 2/O/sub 5/ with H/sub 3/PO/sub 4/ in alcohol solution were used. Infrared spectra were collected in situ during the flow of 75 cm/sup 3/ of 1.5% hydrocarbon-in-air mixtures over catalysts having P-to-V ratios of 0.9, 1.0, and 1.1. Reaction temperatures from 300 to 400 /sup 0/C were investigated with 1-butene feeds, whereas the highly reactive 1,3-butadiene was studied only at 300 /sup 0/C. An adsorbed butadiene species, maleic acid, and maleic anhydride were observed during both olefin partial oxidation studies. Evidence was obtained for a second olefin species which had been previously observed for in situ n-butane selective oxidation studies. Concentrations of adsorbed species were found to vary with catalyst phosphorus loading, reaction temperature, and time of exposure to reaction conditions.
- Research Organization:
- Iowa State Univ., Ames
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6540411
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:7; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALKENES
BUTADIENE
BUTENES
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DIENES
EXPERIMENTAL DATA
FOURIER TRANSFORM SPECTROMETERS
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
MEASURING INSTRUMENTS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
POLYENES
SPECTRA
SPECTROMETERS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES