In today's world, environmental issues are becoming more and more relevant. In connection with the growing industrial activity of mankind, a large amount of CH4 and CO2 is emitted into the atmosphere. Since the start of the Industrial Revolution, CO2 concentrations have increased by more than 45 %, from 280 ppm in the mid-18th century to 415 ppm in 2019. Biogas mainly consists of 50 - 87 % methane, 13 - 50 % carbon dioxide and other gases. Conversion of biogas solves two important issues related to the utilization of greenhouse gases and the possibility of obtaining synthesis-gas with an optimal ratio of 1 : 1. Carrying out the Fischer-Tropsch synthesis reaction, the production of gasoline, jet fuel, ethanol and other oxygen-containing compounds is possible at this ratio. Development of new applied catalysts, as well as optimal technological conditions for synthesis-gas production in the process of catalytic conversion of biogas, is a contribution to the petrochemical sector, namely gas processing. Optimal conditions for the oxidative conversion of a model mixture of biogas into synthesis-gas on Ni-, Co- monometallic and Ni-Co bimetallic catalysts at different ratios to obtain maximum yield of products with rational consumption of raw materials and energy were determined: T = 700 °C, GHSV = 6,000 h-1, CH4 : CO2 : Ar = 1 : 1 : 1 ratio in the reaction mixture.