合成气直接制取二甲醚催化剂的制备因素及其应用  

Studies on Preparation Method of Catalysts and Reaction Conditions for Direct Synthesis of Dimethyl Ether from Synthesis Gas

作　　者：葛庆杰[1] 黄友梅[1] 李双娣[1] 

机构地区：[1]中国科学院兰州化学物理研究所

出　　处：《石油化工》1997年第9期593-597,共5页Petrochemical Technology

基　　金：金陵石油化工公司资助

摘　　要：研究了ＣｕＯ／ＺｎＯ／Ａｌ２Ｏ３和ＣｕＯ－ＺｎＯ－Ａｌ２Ｏ３／ＨＺＳＭ－５催化剂的制备方法及合成反应条件对合成气直接制取二甲醚反应的影响。结果表明，采用共沉淀沉积法制备催化剂，３５０°Ｃ下焙烧，２３０～２４０°Ｃ下还原ＣｕＯ／ＺｎＯ／Ａｌ２Ｏ３催化剂的活性最高。ＣｕＯ－ＺｎＯ－Ａｌ２Ｏ３／ＨＺＳＭ－５催化剂上合成反应的适宜条件：温度２７０～３００°Ｃ，压力４．０ＭＰａ，空速１５００ｈ－１，Ｈ２ＣＯ＝２～２．８（ｍｏｌ比），原料气中ＣＯ２的浓度为５％（ｖ）。The effect of preparation method and reaction conditions on the catalytic properties of CuO/ZnO/Al 2O 3 and CuO ZnO Al 2O 3/HZSM 5 catalysts in the direct synthesis of dimethyl ether from synthesis gas was studied.The results indicated that the CuO/ZnO/Al 2O 3 catalyst prepared by the coprecipitation sedimentation method and calcined at 350°C and reduced at 240°C exhibited the highest catalytic activity.The best reaction conditions over CuO ZnO Al 2O 3/HZSM 5 catalysts are:temperature,270°C;pressure,4.0MPa;GHSV,1500h -1 ;H 2/CO=2～2 8 and CO 2,5%.

关 键 词：合成气 二甲醚 催化剂 直接法 

分 类 号：TQ223.24[化学工程—有机化工]