最近波兰Maria Curie-Sktodowska大学化工系Andrizej Machocki等人撰文,报道了他们对甲烷氧化偶联催化剂改性方面进行的研究。针对钠助剂的添加对MnO_x/SiO_2和PbO_x/SiO_2性能的影响,发现钠的存在两者都明显增加活性,同时生成烃(C_2~+)的选择性增加。对于前者当C_2~+选择性提高时,产物中烯/烷比不变,且钠的阴 Recently, Andrizej Machocki et al., Department of Chemical Engineering, University of Maria Curie-Sktodowska, Poland, reported on their research on modification of methane oxidative coupling catalysts. Aiming at the influence of sodium additive on the properties of MnOx / SiO2 and PbOx / SiO2, it was found that the presence of sodium significantly increased both the activity and the selectivity of C2 +. For the former when C_2 ~ + selectivity increased, the product of olefin / alkyl ratio unchanged, and sodium overcast