高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (6): 849.

• 研究论文 • 上一篇    下一篇

ZrO2添加方法对CuO-ZnO-ZrO2催化剂性能的影响

许勇, 汪仁   

  1. 华东化工学院工业催化研究所, 上海 200237
  • 收稿日期:1992-09-04 修回日期:1992-12-22 出版日期:1993-06-24 发布日期:1993-06-24
  • 通讯作者: 许勇

Effect of Adding ZrO2 Methods on the Properties of CuO-ZnO-ZrO2 Catalysts

XU Yong, WANG Ren   

  1. Research Institute of Industrial Catalysts, East China University of Chemicai Technology, Shanghai, 200237
  • Received:1992-09-04 Revised:1992-12-22 Online:1993-06-24 Published:1993-06-24

摘要: 研究了ZrO2的两种加入法所得CuO-ZnO-ZrO2催化剂对CO2加H2合成CH3OH反应催化活性的影响,得到催化剂的最佳含量组成及各种操作条件下的活性规律。采用BET、XRD、TPR、XPS等手段对催化剂表面晶相组成、活性组分存在状态进行了探讨。

关键词: 氧化锆, 添加方法, 催化性能, 二氧化碳, 甲醇

Abstract: The influence of preparation methods for catsalyst CuO-ZnO-ZrO2 on the activities for the reaction of rnethanol synthesis from CO2 and hydrogen is studied.The optimum composition of the catalysts has been obtained.BET, XRD, TPRand XPSwere used to examine the crystal phases of catalysts and the state of active species.The adding methods of ZrO2 affect the ratios of various component to catalytic activity.Adding ZrO2 can increase the dispersion of active species and the surface area.The catalytic activities are not only related with the catalyst surface area, but also with the amount of bulky CuO, The activities and surface area of catalysts prepared from two solutions containing precipitate were higher than those of the catalysts made by adding ZrO2 powder.And the former has 75% CuOin bulk phase in the catalyst, the latter just has only 69% CuOin bulk phase.The state of active component CuOand its effect is also studied.

Key words: Zirconium oxide, Adding method, Catalytic property, Carbon dioxide, Methanol

TrendMD: