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自从1982年Keller首先报导了甲烷氧化偶联制乙烯、乙烷的催化反应以来,引起国内外广泛的重视,若甲烷的转化率C达35%,C_2的选择性S(C_2)达88%,乙烯/乙烷较大时,则甲烷氧化偶联催化过程可以工业化.当前国内外的工作重点是寻求甲烷转化率高,C_2选择性好的催化剂.Li和烯土复合氧化物催化剂引起人们注意,C_2的收率Y(C_2)可达24.6%,本文采用高温灼烧而成的Li-Nd-Mg复合氧化物,Y(C_2)可达31.3%. 实验部分Li-Nd-Mg复合氧化物由高温灼烧而成,实验采用小型固定床石英反应器,反应器的直
Since 1982, Keller first reported the catalytic oxidation reaction of methane with ethylene and ethane, it has attracted a great deal of attention both at home and abroad. If the conversion of methane is 35% and the selectivity of C 2 is 88% When ethylene / ethane is larger, the process of methane oxidative coupling can be industrialized.At present, the focus of the work at home and abroad is to seek catalysts with high methane conversion rate and good C 2 selectivity.Li and alkene compound oxide catalysts attract people’s attention, The yield of C_2 is up to 24.6%. In this paper, the Li-Nd-Mg composite oxide prepared by high-temperature calcination can attain 31.3% of Y (C 2) .The experimental part of Li-Nd- Burning high temperature, the experiment using a small fixed-bed quartz reactor, the reactor straight