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%.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
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
关键词
合成气
二甲醚
催化剂
synthesis gas, dimethyl ether, CuO/ZnO/Al 2O 3 catalysts, preparation methods
