The results show that the activity of catalyst and the selectivity of C_2 hydrocarbons can be improved when a little Sm_2O_3 adds to Li_2SO_4/MgO catalyst,but the conversion of methane will be reduced when a little La_2O_3 adds to.

• 结果发现 ,在Li2 SO4/MgO催化剂中引入少量Sm2 O3 可以提高催化剂活性和生成C2 烃的选择性 ,而加入少量La2 O3 会降低甲烷转化率。