能源化学(英文) ›› 2002, Vol. 11 ›› Issue (1): 63-69.

• Articles • 上一篇    下一篇

Adaptation of Cu/ZnO/Al2O3 to Temperature Change in Methanol Synthesis from CO2

Jialin Tao, Ki-Won Jun, Kyu-Wan Lee   

  1. 1. Chemical Technology Lab. 1, Korea Research Institute of Chemical Technology, P.O. Box 107, Yusong, Taejon 305-600, Korea
  • 出版日期:2002-03-30 发布日期:2002-03-30

Adaptation of Cu/ZnO/Al2O3 to Temperature Change in Methanol Synthesis from CO2

Jialin Tao, Ki-Won Jun, Kyu-Wan Lee   

  • Online:2002-03-30 Published:2002-03-30

摘要: The induction behavior in CO2 hydrogenation was studied by varying the reaction temperature to investigate the adaptation of the Cu/ZnO/Al2O3 catalyst to the temperature change. The results indicated that a used catalyst had a tendency to keep the last running state in new reaction conditions for MeOH formation, and that this tendency was related to the di erence in Cu/Cun+ ratio caused by CO2 and CO produced at di erent reaction temperatures. However, the reverse water-gas shift reaction (RWGS) induced at four temperatures was completely di erent from that of methanol synthesis. It implied that the two so-called competitive reactions in CO2+H2, RWGS and methanol synthesis, have di erent active centers.

关键词: induction, Cu/ZnO/Al2O3 catalyst, methanol, adaptation

Abstract: The induction behavior in CO2 hydrogenation was studied by varying the reaction temperature to investigate the adaptation of the Cu/ZnO/Al2O3 catalyst to the temperature change. The results indicated that a used catalyst had a tendency to keep the last running state in new reaction conditions for MeOH formation, and that this tendency was related to the di erence in Cu/Cun+ ratio caused by CO2 and CO produced at di erent reaction temperatures. However, the reverse water-gas shift reaction (RWGS) induced at four temperatures was completely di erent from that of methanol synthesis. It implied that the two so-called competitive reactions in CO2+H2, RWGS and methanol synthesis, have di erent active centers.

Key words: induction, Cu/ZnO/Al2O3 catalyst, methanol, adaptation