Simultaneous IR/kinetic study of supported platinum methanation catalysts
Conference
·
· Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
OSTI ID:6360847
The adsorption of CO in helium, the competitive adsorption of CO and H/sub 2/ and the reaction of CO with H/sub 2/ on silica-, silica/alumina-, alumina-, and titanium oxide-supported 1.3-2% platinum were monitored by IR spectroscopy and gas chromatographic analysis of the product gases. Under reaction conditions at 275/sup 0/C, chemisorbed CO was virtually not present on Pt/TiO/sub 2/, but was present on the other catalysts. Turnover frequencies for methanation were much lower on the silica-supported platinum than on the silica-alumina- or alumina-supported catalysts, and were highest on the titanium oxide catalyst, which probably had only a small fraction (0.12) of platinum atoms exposed. No correlation between turnover frequency and either the band intensity of linear or that of bridged carbon monoxide was detected. The results were consistent with the assumption of a small number of active platinum sites.
- Research Organization:
- Pennsylvania State Univ.
- OSTI ID:
- 6360847
- Report Number(s):
- CONF-800303-
- Conference Information:
- Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 25:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTS
HYDROGEN
KINETICS
METALS
METHANATION
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
REACTION KINETICS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
STRUCTURAL CHEMICAL ANALYSIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
10 SYNTHETIC FUELS
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTS
HYDROGEN
KINETICS
METALS
METHANATION
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
REACTION KINETICS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
STRUCTURAL CHEMICAL ANALYSIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS