space velocity

in catalysis
https://doi.org/10.1351/goldbook.S05779
Defined as \(v_{m}\), \(v_{v}\), and \(v_{a}\) where the \(v_{i}\)s represent the rate of feed of the given reactant fed per unit mass, volume or surface area of the @[email protected]
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 [Terms] [Paper]