直接利用甲烷氧化偶联产物中的稀乙烯制环氧乙烷

Direct Epoxidation of Ethene from the Exit Gas of Oxidative Coupling of Methane Containing Low Concentration of Ethylene to Ethylene Oxide

直接利用甲烷氧化偶联产物中的稀乙烯制环氧乙烷刘育，徐法强，沈师孔（中国科学院兰州化学物理研究所，兰州，７３００００）关键词乙烯环氧化，甲烷氧化偶联，负载银催化剂１．前言甲烷氧化偶联（ＯＣＭ）是一个产物较为复杂的反应，从目前研究结果来看，产物中Ｃ２烃总...

Direct epoxidation of ethene in the exit gas generated by oxidative coupling of methane(OCM) has been investigated over supported silver catalyst.A process was designed to avoid the effects of carbon dioxide and hydrogen in the exit gas of OCM on ethene epoxidation.Carbon dioxide was adsorbed with soda-asbestos,ppm levels of 1,2-dichloroethane(DCE)and partial oxygen were added,then fed into the reactor. Direct epoxidation of ethene in the exit gas of OCM using this process can be carried out successfully. The conversion of ethene and selectivity to ethylene oxide were maintained at the level of 67 and 70%,respectively,whether the cofeed gas of OCM was methane and oxygen or methane and air.