Correlation between X-ray photoelectron spectroscopy data and catalytic properties in selective oxidation on Sb-Sn-O catalysts
A detailed ESCA study of tin-antimony mixed oxides containing 1.5-39.7 atom Vertical Bar3< antimony and calcined at 500/sup 0/-1100/sup 0/C showed that the surface composition of catalysts containing Vertical Bar3; 5Vertical Bar3< antimony and all catalysts activated at 500/sup 0/C corresponded to the bulk composition and consisted of solid solution of antimony(V) in SnO/sub 2/; and that surface enrichment with antimony (as an Sb/sub 2/O/sub 4/ phase) occurred at higher bulk antimony contents and/or higher calcination temperature. A correlation of the activity of these catalysts for propylene oxidation at low conversion and of their selectivity for acrolein with surface composition suggested that the selective catalyst consists of an Sb/sub 2/O/sub 4/ phase lying on a solid solution of antimony(V) in tin oxide.
- Research Organization:
- Inst. Rech. Catal., C.N.R.S., Villeurbanne
- OSTI ID:
- 6676056
- Journal Information:
- J. Catal.; (United States), Vol. 58:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
CHEMICAL COMPOSITION
PROPYLENE
OXIDATION
ANTIMONY OXIDES
CALCINATION
CORRELATIONS
STRUCTURAL CHEMICAL ANALYSIS
SURFACE PROPERTIES
TIN OXIDES
ALKENES
ANTIMONY COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
HYDROCARBONS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
400201* - Chemical & Physicochemical Properties
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)