compensation in catalysis

For the process:

$Math - e$

where $Math - text$ is a rate constant, $Math - text$ the frequency factor and $Math - text$ the activation energy, $Math - text$ and $Math - text$ sometimes exhibit compensation, i.e. they change in the same direction with change in catalyst for a given reaction or with change in reaction for a given catalyst.

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 82