What is the Role of Electrons in Homogeneous vs. Heterogeneous Catalysis?
In homogeneous catalysis, the catalyst and reactants are in the same phase, usually liquid. Electron transfer in this context often involves coordination complexes where the catalyst can donate or accept electrons. In heterogeneous catalysis, the catalyst is in a different phase, usually solid, and electron transfer often occurs at the interface between the catalyst and reactants. Surface properties, such as the presence of defects or specific atomic arrangements, can significantly influence electron transfer and catalytic activity.