shape selectivity

in catalysis
https://doi.org/10.1351/goldbook.S05632
Possibly observed in @[email protected] with very small pores. The @[email protected] is largely determined by the bulk or size of one or more reactants.
Source:
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 81 [Terms] [Paper]