高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (2): 285.

• 论文 • 上一篇    下一篇

甲醇含成Cu-Mn/SiO2催化剂的研究

李基涛1, 高利珍1, 张伟德1, 林建毅2, 陈华毅2, TanKuang-Lee2   

  1. 1. 厦门大学化学系物理化学研究所, 361005;
    2. 国立新加坡大学物理系, 新加坡, 0511
  • 收稿日期:1996-01-04 出版日期:1997-02-24 发布日期:1997-02-24
  • 通讯作者: 李基涛, 男, 55岁, 副教授.
  • 作者简介:李基涛, 男, 55岁, 副教授.
  • 基金资助:

    福建省自然科学基金;固体表面物理化学国家重点实验室资助

A Study of Cu-Mn/SiO2 Catalysts for Methanol Synthesis

LI Ji-Tao1, GAO Li-Zhen1, ZHANG Wei-De1, LIN Jian-Yi2, CHEN Hua-Yi2, TAN Kuang-Lee2   

  1. 1. Dept.of Chem., Inst.of Phys.Chem., Xiamen University, Xiamen, 361005;
    2. Dept.of Physics, National University of Singapore, Singapore, 0511
  • Received:1996-01-04 Online:1997-02-24 Published:1997-02-24

摘要: 对浸渍法制备的Cu-Mn/SiO2催化剂进行了甲醇合成的活性评价,同时用XPS、Auser、N2O分解,TPR等技术对催化剂进行了表征.结果表明,在双组份催化剂中,工作态催化剂表面主要存在Cu(O).催化反应可能通过Cu…O-Mn氧桥的长程诱导交换作用,使Cu带部分正电荷,这有利于CO与H2的吸附和活化,从而提高甲醇合成的收率.

关键词: 甲醇合成, Cu-Mn/SiO2, 催化剂, 活性表面态

Abstract: Cu-Mn/SiO2, impregnation catalysts were studied with respect to their catalytic activity in the synthesis of methanol.Moreover, the means of XPS, Auger, TPRand decomposition of N2Owere also used to characterize the catalysts.The experimental results show that Cu (O) mostly existed on the working surface of the catalysts.The catalytic reaction was promoted by Cu with part of positive charges which was formed by means of long path exchange function between Cu...O-Mn.Therefore, this was favourable for adsorbing and activating CO and H2 on the surface of catalysts and for promoting methanol synthesis.

Key words: Synthesis of methanol, Cu-Mn/SiO2 catalysts, Surface state of activity

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