General diagnostic criteria for transport limitation in porous solid chemical reactions

Abstract

Theoretical criteria for establishing the absence of heat and mass transport limitations are of fundamental importance in chemical reactor engineering. Many criteria have been proposed in the past, but they cover only particular situations. This work shows that only two general expressions are needed to establish the absence of either intraparticle or interphase mass and heat transport. They encompass all previous theoretical findings and cover new cases. Moreover, when properly applied, the procedure can be used to generate useful criteria for systems with more than one reaction.