Effect of nonuniform surface reactivity on the evolution of pore structure and surface area during carbon gasification

Abstract

There is much experimental evidence that the gasification of carbon surfaces is often nonhomogeneous on a fine scale. Gasification of impure carbons, for example, often occurs in the immediate vicinity of catalytically active particles of inorganic matter, proceeding by the formation either of irregular pits or of channels of definite size and orientation. In the present paper, a model is presented which predicts the effect of nonuniform gasification on the evolution of surface area and pore size distribution for low-temperature porous carbons