高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (7): 1131.

• 论文 • 上一篇    下一篇

CO2/H2和(CO/CO2)+H2低压合成甲醇催化过程的本质

孙琦1, 张玉龙2, 马艳1, 邓景发1   

  1. 1. 复旦大学化学系, 上海 200433;
    2. 同济大学化学系, 上海 200092
  • 收稿日期:1997-01-14 出版日期:1997-07-24 发布日期:1997-07-24
  • 通讯作者: 孙琦, 男, 30岁, 博士, 讲师.
  • 作者简介:孙琦, 男, 30岁, 博士, 讲师.
  • 基金资助:

    国家自然科学基金

Comparison Studies on the Catalysis Process of Methanol Synthesis from CO2+H2 and (CO/CO2) +H2

SUN Qi1, ZHANG Yu-Long2, MA Yan1, DENG Jing-Fa1   

  1. 1. Dept.of Chem., Fudan Univ., Shanghai 200433;
    2. DePt.of Chem., Tong .Univ., Shanghai 200092
  • Received:1997-01-14 Online:1997-07-24 Published:1997-07-24

PDF (PC)

摘要： 通过在Cu/ZnO/Al2O3催化剂上CO2＋H2、CO＋H2和(CO/CO2)＋H2催化反应动力学研究,对合成甲醇动力学和反应机理进行了细致分析,提出合成甲醇的反应机理,解释了在(CO/CO2)＋H2合成甲醇过程中少量CO2的作用及合成甲醇的直接碳源.

关键词: Cu/ZnO/Al2O3催化剂, 甲醇合成, CO/CO2加氢, 反应机理

Abstract: The catalytic processes of methanol synthesis from CO2+H2, CO+H2 and (CO/CO2) +H2 have been studied.The results indicate that methanol is primarily formed fromCO2 hydrogenation for both CO2+H2 and (CO/CO2) +H2. Due to the limitation of thermaldynamics, the yield of methanol is low for CO2 hydrogenation.In the process of (CO/CO2)+H2, methanol selectivity and formation rate are promoted greatly due to the recycle processof methanol synthesis from CO2+H2 and reverse water-gas shift reaction.As a result, thelimitation of thermodynamic equilibrium of methanol synthesis from CO2, hydrogenation ismoved to the favorable side of methanol synthesis.Anovel reaction mechanism is proposed.

Key words: Cu/ZnO/Al2O3 catalyst, Methanol synthesis, CO2/CO hydrogenation, Reaction mechanism

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