F. Vanlooij et Jw. Geus, THE REACTIVITY OF CARBON-CONTAINING SPECIES ON NICKEL - EFFECTS OF CRYSTALLITE SIZE AND RELATED PHENOMENA, Catalysis letters, 45(3-4), 1997, pp. 209-213
A pronounced variation of the reactivity of sub-monolayers of carbon-c
ontaining species deposited from synthesis gas with the nickel crystal
lite size is observed. Nickel crystallites of about 4 nm display the p
resence of a carbon-containing ad-layer of maximum reactivity. The rat
e of methanation is discussed in terms of the reactivity of the carbon
aceous fragments, and the catalyst preparation procedure.