In multiphase catalysts, the active catalytic material is often present as the minor component dispersed upon a support sometimes called a @C00859@. The support may be catalytically @I03026@ but it may contribute to the overall catalytic activity.
PAC, 1976, 46, 71. (Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II: Heterogeneous Catalysis) on page 79 [Terms] [Paper]