ABSTRACT
Introduction Reactions between gases and solids are widespread and include operations such as combustion of solid fuels, environmental control (pollution abatement), energy generation, mineral processing, chemical vapor deposition, and catalyst manufacture and regeneration. Several classes of gas-solid reactions can be identied. Representing the solid by (s) and gas by (g), a number of categories are listed in Table 10.1 along with selected examples of each category. The analysis and modeling of these reactions obviously depend on the specic category at hand, but many common principles can be brought out by considering the most general case
n n n nA B R SA B R S(g) (s) (g) (s+ → + ) (R1)
Thus, our presentation will largely be conned to this class of reactions, although brief references will be made to a few other classes, notably: A (g) + B (s) → R (g), represented by the gasication of coal.
