Reversible decomposition of methane on a Ni/SiO/sub 2/ catalyst. [At 30 to 350/sup 0/C]

Journal Article · Sat Oct 31 23:00:00 EST 1981 · J. Catal.; (United States)

OSTI ID:5703012

Kuijpers, E G.M.; Jansen, J W; Van Dillen, A J; Geus, J W

The interaction of CH/sub 4/ with a silica-supported nickel catalyst is studied at temperatures from 30 to 350/sup 0/C, both in continuous-flow and pulse-flow experiments. Even at 30/sup 0/C chemisorption is observed; the apparent activation energy for the chemisorption is estimated at 6 kcal mole/sup -1/. At temperatures above 175/sup 0/C the methane which is adsorbed on the Ni catalyst dissociates completely into adsorbed carbon atoms and hydrogen. The hydrogen released shifts the equilibrium CH/sub 4/(g) in equilibrium C(ads) + 4H(ads) to the left side. The reactivity of the carbonaceous deposit with hydrogen is also investigated. At all temperatures in the range 30 to 450/sup 0/C the only product of the exothermic reaction is methane. The reactivity passes through a maximum at 200/sup 0/C and strongly decreases at temperatures above 300/sup 0/C.

• Research Organization: Univ. of Utrecht, Netherlands
• OSTI ID: 5703012
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 72:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
ALKANES
CATALYSIS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
METALS
METHANE
MINERALS
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENTS