An investigation has been made of the oxidative dimerization of methane with the use of Na and H forms of zeolites modified with fluorine in comparison with systems such as Fe-Tseokar, zirconium oxide and 10% Mn-NaTsVK, Catalytic experiments were carried out at atmospheric pressure in the 750-850 degrees C temperature range with a volume flowrate of 1000 hr(-1) and a methane/air molar ratio of 0.65:1 on a continuous flow-type unit, Most active was the 11% F-NaTsVK specimen, At 800 degrees C, the methane conversion amounted to 4.4 wt.%, and the selectivity with respect to C-2 hydrocarbons to 80%.