This contribution highlights the most important consequences of spillover phenomena in catalysis. Spillover species keep catalysts clean. They create or regenerate selective sites through a remote control mechanism. They protect catalysts against harmful solid state reactions. A possible mechanism for remote control in selective oxidation is outlined. The applicability of the concept is continuously extending to new types of reactions.
Delmon, B. (1993). The Control of Selectivity and Stability of Catalysts By Spillover Processes. Studies in Surface Science and Catalysis, 77, 1-8. https://doi.org/10.1016/S0167-2991(08)63149-3 (Original work published 1993)