The 1% Sr/La2O3-Ag-YSZ catalytic membrane reactor with oxygen pumping type was applied to the oxidative coupling of methane (OCM). The preparation methods of the catalytic membrane were studied. The synthetic membrane prepared via impregnation 3 method was the most effective. The effects of transported oxygen flux

temperature

feed CH4 concentration

residence time on the reactivity of the catalytic membrane were investigated. Transported and premixed oxygen fed simultaneously was a good reaction mode. The results showed that not only the separation process could be simplified

but also higher catalytic activity and C2 - selectivity could be obtained.