【摘要】 <正> 甲烷大量存在于自然界中,是石油气、天然气和沼气的主要成分.近年来,化学工作者进行了甲烷氧化偶联制乙烯的研究.其特点是可以不经过合成气的过程,直接由甲烷转化成乙烯或乙烷.本文介绍了氯化锂对甲烷直接氧化偶联成乙烯的创催化作用,可以明显地提高乙烯的选择性和收率. 本实验使用的是常压固定床流动体系反应装置.反应条件为750℃,W/F=0.233g更多还原

【Abstract】 The action of lithium chloride as a promoter in methane oxidative coupling reaction is reported. A lot of experimental results show that as long as lithium chloride is added to the metal oxides, whether a single oxide, or a mixture of them, or with carriers in the mixture, the selectivity for ethylene and the yield of ethylene can be distinctly increased. Especially when LiCl is used together with boric acid, phosphoric acid and aluminium oxide, better results can be achieved, the selectivity for ethylene is as high as 80%, and the yield of ethylene reaches 30%. Under reaction temperature lithium chloride is in its melting state, and this is very revelational for going further into the mechanism of methane oxidative coupling reaction.更多还原