【摘要】 研究了天然气和氧经偶联反应制环氧乙烷的ＡｇＢａＣｓ／Ａｌ２Ｏ３催化剂（ＮＥＯ１）的稳定性。在氧化偶联的产物气中加入５～８％的氧和１～４×１０６体积分数的１，１二氯乙烷作乙烯环氧化原料气，反应温度２４０℃，进气空速２０００ｈ１的条件下，稳定运转了５００ｈ，环氧乙烷（ＥＯ）选择性和收率分别稳定地保持在８０～８３％和２１～２５％之间，并对反应前后催化剂进行了表征，结果表明，比表面和孔分布以及表面原子浓度等变化不大。更多还原

【Abstract】 The production of ethylene oxide was performed in the series connection reactors of OCM and EO Both reactors were made of quartz tube AgBaCs/Al 2O 3 (NEO1) catalyst was prepared by wet impregnation method The stability of catalyst has been investigated for the production of EO from natural gas with oxygen via OCM The 500h duration test of NEO1 catalyst showed that the EO selectivity and yield kept at 80￣83% and 21￣25%, respectively The specific surface, pore size distribution and the surface atomic concentration of catalyst before and after 500h run were not changed so much The results indicated that the catalyst has good stability更多还原