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完全液相法制备的Cu-Zn-Si-Al浆状催化剂一步法合成二甲醚的失活研究
引用本文:马 强,黄 伟,樊金串,赵 杰,任 杰.完全液相法制备的Cu-Zn-Si-Al浆状催化剂一步法合成二甲醚的失活研究[J].分子催化,2009,23(6).
作者姓名:马 强  黄 伟  樊金串  赵 杰  任 杰
作者单位:太原理工大学,煤科学与技术教育部和山西省重点实验室,山西,太原,030024
基金项目:国家重点基础研究发展规划(973计划),国家自然科学基金 
摘    要:采用完全液相法制备了Cu-Zn-Si-Al浆状二甲醚合成催化剂, 分析研究了其在浆态床合成气一步法合成二甲醚过程中的失活现象和机理. 采用X射线粉末衍射、 N_2吸附测试、 X射线光电子能谱以及元素分析等表征方法对催化剂使用前后的变化情况进行了分析. 结果表明, 完全液相法制备的Cu-Zn-Si-Al浆状催化剂的失活与传统方法制备的催化剂不尽相同, 没有发现催化剂Cu晶粒的长大和比表面积降低等失活因素;催化剂失活与Si的存在有关, Cu组分的流失是其失活的主要原因.

关 键 词:二甲醚  浆态床  完全液相法  Cu-Zn-Si-Al浆状催化剂  失活

Study on the Deactivation of Cu-Zn-Si-Al Slurry Catalyst Prepared by Complete Liquid-Phase for One-step Dimethyl Ether Synthesis
MA Qiang,HUANG Wei,FAN Jin-chuan,ZHAO Jie,REN Jie.Study on the Deactivation of Cu-Zn-Si-Al Slurry Catalyst Prepared by Complete Liquid-Phase for One-step Dimethyl Ether Synthesis[J].Journal of Molecular Catalysis (China),2009,23(6).
Authors:MA Qiang  HUANG Wei  FAN Jin-chuan  ZHAO Jie  REN Jie
Institution:MA Qiang,HUANG Wei*,FAN Jin-chuan,ZHAO Jie,REN Jie(Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China)
Abstract:Cu-Zn-Si-Al slurry catalyst was prepared by complete liquid-phase technology.The deactivation phenomenon and mechanism of the catalyst for one-step synthesis of dimethyl ether from syngas in a slurry reactor were analyzed and studied.X-ray diffraction,N2 adsorption,X-ray photoelectron spectroscopy and elemental analysis were used to characterize the fresh and used catalysts.The result show that the deactivation of Cu-Zn-Si-Al slurry catalyst prepared by complete liquid-phase technology was different from th...
Keywords:Dimethyl ether  Slurry reactor  Complete liquid-phase technology  Cu-Zn-Si-Al slurry catalyst  Deactivation
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