Theoretical considerations on the temperature and pressure dependence of the kinetics of reversible thermal decomposition processes of solids
Abstract
Whereas the temperature dependence of reaction rates of reversible solid-state decomposition processes of the type A solid ⇄ B solid + C gaseous has been outlined in numerous theoretical as well as in experimental studies, its simultaneous dependence on the actual pressure of the gaseous product has not been taken into account sufficiently. Theoretical considerations elucidate, however, that specific and reproducible kinetic data, in particular umambiguous values for activation energies, can only be determined under vacuum conditions or in some cases by fulfilling the following precondition: {p exp}/{p equ} = f(T) = constant, where pexp is the actual pressure and pequ the equilibrium pressure of the gaseous product.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- July 1985
- DOI:
- 10.1016/0022-4596(85)90223-3
- Bibcode:
- 1985JSSCh..58..398L