High-performance Cu/Zn O/Al_(2)O_(3) catalysts for methanol steam reforming with enhanced Cu-ZnO synergy effect via magnesium assisted strategy  

作　　者：Zaizhe Cheng Wenqiang Zhou Guojun Lan Xiucheng Sun Xiaolong Wang Chuan Jiang Ying Li 

机构地区：[1]Institute of Industrial Catalysis,Zhejiang University of Technology,Hangzhou 310014,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2021年第12期550-557,I0013,共9页能源化学（英文版）

基　　金：Natural Science Foundation of Zhejiang Province (LQ21B060007)。

摘　　要：Methanol steam reforming(MSR) is an attractive approach to produce hydrogen for fuel cells.Due to the limited catalyst loading volume and frequent start-ups and shut-downs on board,it is highly desired to develop an extremely active and robust catalyst.Herein,on the basis of industrial Cu/ZnO/Al_(2) O_(3) catalysts,a series of CuZnAl-xMg catalysts with enhanced Cu-ZnO synergy were synthesized via magnesium assisted strategy.The incorporation of magnesium was found to be beneficial to the enhancement of catalytic activity and stability of catalyst.A combination of complementa ry characterizations(e.g.XRD,H_(2)-TPR,N_(2) O chemisorption,TEM,XPS analysis etc.) proves that isomorphous substitution of Cu^(2+)in malachite phase gives rise to more dispersive Cu and ZnO NPs,and the increased Cu^(+)/Cu~0 ratio indicates the strengthened Cu-ZnO synergy effect,which leads to the boosted stability during the thermal treatment.

关 键 词：Methanol steam reforming Cu/ZnO/Al_(2)O_(3) DOPING MAGNESIUM Hydrogen 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[电气工程—电力电子与电力传动] TM911.4