unactivated adsorption process

If the temperature @C01124@ of the rate of @A00155@ is very small, the adsorption process is said to be unactivated (i.e. to have a negligible @A00102@). In this case the @S06012@ at low coverages may be near unity particularly for smaller molecules.
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]