ORIENTAL JOURNAL OF CHEMISTRY www.orientjchem.org An International Open Access, Peer Reviewed Research Journal ISSN: 0970-020 X CODEN: OJCHEG 2019, Vol. 35, No.(1): Pg. 404-408 This is an Open Access article licensed under a Creative Commons license: Attribution 4.0 International (CC- BY). Published by Oriental Scientific Publishing Company © 2018 Catalytic Oxidation of C 3 -C 4 Mixture into Industrial Important Chemical Products TOLKYN BAIZHUMANOVA 1,2 *, SVETLANA TUNGATAROVA 1,2 , GULNAR KAUMENOVA 1,2 , MANAPKHAN ZHUMABEK 1 and KAYSAR KASSYMKAN 1 1 D.V. Sokolsky Institute of Fuel, Catalysis and Electrochemistry, 142 Kunaev str., Almaty, 050010, Republic of Kazakhstan. 2 Al-Farabi Kazakh National University, Almaty, Kazakhstan. *Corresponding author E-mail: baizhuma@mail.ru http://dx.doi.org/10.13005/ojc/350151 (Received: September 28, 2018; Accepted: January 22, 2019) ABSTRACT The results of a study of the activity of polyoxide catalysts based on molybdenum, chromium and gallium supported on natural clays for the catalytic oxidation of light alkanes to industrially important chemical products are presented. Studies of the oxidative conversion of a propane-butane mixture on molybdenum, chromium and gallium polyoxometallates supported on natural clays allowed to determine that the predominant composition of the products is determined by the temperature of the process. It was found that the production of a number of products with high yields: acetaldehyde - at 673-723 K, acetone - at 823 K, methanol - at 673-723 K, MEK - at 773-823 K, ethanol - at 823 K, ethylene - at 673 -723 K, H2 - at 823 K is possible at oxidative conversion of propane-butane mixture at GHSV = 450 h -1 on the developed three-component supported Mo-Cr-Ga catalysts. Keywords: Catalytic oxidation, Catalysts, C 3 -C 4 mixture. INTRODUCTION Natural and oil gases are the most important alternative sources of raw materials, capable in the long term to compete with oil. The problem of rational use of C 1 -C 4 alkanes, included in their composition, is particularly relevant in countries rich in this type of raw materials. Despite the huge reserves of hydrocarbon raw materials in the Republic of Kazakhstan, it is mainly spent in the form of domestic, industrial and motor fuel, and the remaining raw materials are burned as part of exhaust gases, or again pumped into oil reservoirs. In this regard, the processing of alkanes (the main components of natural gas and oil) for the purpose of obtaining industrially important chemical products is one of the most urgent environmental problems in Kazakhstan. Formation of synthesis gas, unsaturated hydrocarbons, aldehydes, acids and alcohols should be expected at incomplete oxidation of methane,