The article focuses on some aspects of using microcatalytic pulse reactors for studying kinetics of heterogeneously catalyzed reactions. A number of literature data regarding application of the reactors in heterogeneous catalysis and for estimation of kinetic parameters are summarized. In the experimental part, adaptation of a pyrolysis chromatograph to a microcatalytic reactor is described. The results of its testing on a model reaction using two types of mathematical models with non-linear regression are discussed.