合成气直接制取二甲醚的双功能催化剂  

Bifunctional catalysts for direct synthesis of dimethyl ether from synthesis gas Ⅰ.Study on the preparation method

作　　者：葛庆杰[1] 黄友梅[1] 张天莉[1] 

机构地区：[1]中国科学院兰州化学物理研究所

出　　处：《天然气化工—C1化学与化工》1996年第5期19-22,共4页Natural Gas Chemical Industry

基　　金：金陵石油化工公司资助

摘　　要：采用反应评价并结合ＸＲＤ、ＴＰＲ、吡啶－ＴＰＤ、ＣＯ２－ＴＰＤ、ＸＰＳ等物化测试手段研究了不同制备方法对ＣｕＯ／ＺｎＯ／Ａｌ２Ｏ３催化剂结构和催化性能的影响，揭示了不同方法制备催化剂的特点，发现共沉淀沉积法制备的ＣｕＯ／ＺｎＯ／Ａｌ２Ｏ３催化剂对合成气直接制取二甲醚具有优良的催化性能，ＣＯ转化率达８２％，二甲醚在有机物中选择性为９６％。The effect of preparation methods on catalytic properties and the structures of CuO/ZnO/Al 2O 3 catalysts was investigated. Catalytic synthesis of dimethyl ether from synthesis gas was evaluated in a fixed bed flow microreactor at pressure 4.0MPa, GHSV 1500h -1 . Characterization of the catalysts has been carried out using XRD,TPR,pyridine TPD,CO 2 TPD,XPS. The results indicate that CuO/ZnO/Al 2O 3 catalyst prepared by coprecipitation sedimentation method exhibited the highest catalytic activity for direct synthesis of dimethyl ether from synthesis gas conversion of CO:82%, selectivity for DME(in organic compounds):96%.

关 键 词：合成气 二甲醚 催化剂 

分 类 号：TQ426.94[化学工程]