能源化学(英文) ›› 2002, Vol. 11 ›› Issue (1): 63-69.
Jialin Tao, Ki-Won Jun, Kyu-Wan Lee
Jialin Tao, Ki-Won Jun, Kyu-Wan Lee
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 dierence in Cu/Cun+ ratio caused by CO2 and CO produced at dierent reaction temperatures. However, the reverse water-gas shift reaction (RWGS) induced at four temperatures was completely dierent from that of methanol synthesis. It implied that the two so-called competitive reactions in CO2+H2, RWGS and methanol synthesis, have dierent active centers.