摘要
简述了现有的几种合成气一步法合成二甲醚的反应机理及动力学模型,并分别对双功能催化剂中的甲醇合成活性组分、甲醇脱水活性组分进行了研究,CuO/ZnO/A l2O3作为甲醇合成组分已经比较成熟,甲醇脱水活性组分以γ-A l2O3、分子筛及其改性后产物最为常用。探讨了双功能催化剂的制备方法及改性方法的研究,这也将成为今后合成气一步法制二甲醚技术的研究热点。
Several possible reaction mechanisms and kinetics models in process of direct syngas - to - dimethyl ether conversion were summarized. In the aspect of catalytic activity, methanol synthesis active components, methanol dehydration active components,which were consisted in bifunctional catalysts were respectively studied. The current research and development results revealed that CuO/ZnO/Al2O3 as methanol synthesis component showed higher activity and stability when γ - Al2O3 or molecular sieve series was used as dehydration component. New methods to prepare and modify the bifunctional catalysts would still be the research focus in this field.
出处
《化工时刊》
CAS
2008年第8期1-4,9,共5页
Chemical Industry Times
基金
国家自然科学基金重点研究计划项目(90610035)
云南省自然科学基金项目(2005E0012Q)
关键词
合成气
二甲醚
双功能催化剂
动力学
甲醇
syngas dimethyl ether bifunctional catalysts kinetics methanol
