Ethylene recovery was carried out from the gas product of oxidative coupling of methane by the temperature swing adsorption (TSA) method on NaA zeolites modified by Ca2+. The maximum concentration of ethylene was 98 vol.% in the output mixture. The results were obtained for zeolite containing 6.62% by weight of CaO. The adsorption was carried out at room temperature and the desorption by inert gas was performed at 200 degrees C.