A. Cuesta et al., CARBON MATERIALS REACTIVITY IN AN OXYGEN PLASMA IN COMPARISON WITH MOLECULAR-OXYGEN, Boletin de la Sociedad Chilena de Quimica, 42(3), 1997, pp. 317-332
The reactivity towards an oxygen plasma of 49 different carbons was st
udied in this paper. Suitable parameters are chosen to characterize th
e plasma reactivity of these materials. Plasma reactivities for the se
t of carbons are discussed in terms of their structural, chemical and
textural characteristics. Oxygen plasma reactivity trends are then com
pared with molecular oxygen trends for the same carbons. As a differen
ce with C-O-2 reaction, the C-oxygen plasma reaction shows a weak depe
ndence on structural factors and no influence at all from chemical fac
tors; the main effect upon plasma reactivity seems to come from availa
ble surface area. These observations support a Rideal-type mechanism f
or the carbon-oxygen plasma reaction.