Studies of CO desorption and reaction with H/sub 2/ on alumina-supported Ru
The temperature-programmed desorption (TPD) of CO and temperature-programmed reaction (TPR) of chemisorbed CO in H/sub 2/ have been studied on a Ru/Al/sub 2/O/sub 3/ catalyst. Adsorption at 303 K occurs molecularly and leads to the observation of two peaks in the TPD spectrum. The activation energies associated with these peaks are 27 and 37 keal/mole. Upon heating above 415 K CO disproportionation takes place, forming CO/sub 2/ and carbon. The carbon deposited on the catalyst surface readily reacts with H/sub 2/ at 303 K to produce methane and ethane. These products are also formed during TPR of chemisorbed CO. The mechanism of CO disproportionation, the effect of surface carbon on the bonding of chemisorbed CO, and the reactions of chemisorbed CO with H/sub 2/ are discussed.
- Research Organization:
- Univ. of California, Berkeley
- OSTI ID:
- 6307936
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 57:3; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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ACTIVATION ENERGY
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
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CRYOGENIC FLUIDS
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HYDROGEN
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OXYGEN COMPOUNDS
PLATINUM METALS
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