1. The rate of hydrogenolysis of propane and the selectivity for methane in delivery of hydrogen through a Pd-Ru alloy membrane catalyst is lower than in conducting the reaction in conditions of combined delivery of hydrogen and propane. 2. In the 433-533 K temperature region corresponding to the coexistence of the α and β phases of palladium hydride, the rate of hydrogenolysis of propane does not increase with an increase in the temperature. © 1988 Plenum Publishing Corporation.