DECOMPOSITION REACTIONS AS GENERAL POISSON PROCESSES - THEORY AND AN EXPERIMENTAL EXAMPLE

摘要

The classical theory of decomposition reaction kinetics depends on a ''large scale'' assumption. In this paper we show how this assumption can be replaced by the assumption that the nucleation process is a space-time Poisson process. This framework is unifying in the sense that it includes many earlier formulas as special cases, and it naturally takes boundary effects into account. We consider the conversion of a sphere in detail, and fit the parameters of this model to gypsum decomposition experimental data. The so obtained model shows, for this particular reaction, that the boundary effects decrease with temperature. (C) 1995 American Institute of Physics. [References: 23]