Transport effects, estimation experimental methods

This paper addresses the general subject of substrate transport in polymer-immobilized catalyst systems. The equations needed to interpret reaction rate data for polymer systems are developed and their applicability is discussed. The effects of experimental variables on observed reaction rates in the presence of substrate transport limitations are discussed. A simple method for estimating substrate diffusion coefficients is presented. Methods for testing reaction rate data to determine if substrate transport is affecting the observed reaction rates are developed and the limitations of these methods are discussed. Finally, examples of recent studies are reviewed and discussed within the framework of the mathematical formalism to demonstrate application of the formalism and to show that carefully designed experiments are required to establish the presence of substrate limitations. 

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