feed rate

in catalysis
The amount of reactant fed per unit time to the inlet of the reactor.
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 (https://doi.org/10.1351/pac197646010071)