
334 Green Chemical Engineering
4.2 Heterogeneous Catalytic Reactions and Reactors
Catalytic reactions are the reactions in which catalysts are used to enhance the rate of
reaction. Enhancement of the rate is achieved through reduction of activation energy.
The mechanism and the kinetics of the catalytic reactions are discussed in Section 2.1.11.
Heterogeneous catalytic reactions are the reactions in which the catalyst is a solid sub-
stance, and the reactants and the products are uid substances (gas/liquid). Catalytic reac-
tions are broadly classied as two-phase and three-phase reactions. A two-phase catalytic
reaction is a reaction taking p ...