Catalyst deactivation resulting from changes in the structure or in the texture of the
catalyst. Changes of this kind are usually irreversible and the
catalyst cannot be regenerated.
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 84