A number of possibilities to increase the yield of propylene in the processing of light gaseous hydrocarbons are considered, including the oxidative pyrolysis of propane, conjugated oxidation of propane and ethylene, conjugated oxidation of ethylene and methane, and introduction of methane into the products of a rich methane flame. The principal possibility of production of olefins in non-catalytic gas-phase processes from light gaseous hydrocarbons, including methane, is demonstrated. (C) 2017 Elsevier B.V. All rights reserved.