Keywords SrO-La_2O_3/CaO;Oxidative coupling of methane;FT-IR;Lattice oxygen;Coordination unsaturated oxygen species;Surface carbonates;

• 原位红外光谱;甲烷氧化偶联;晶格氧;配位不饱和晶格氧;活性氧物种;表面碳酸根物种;