The Cu-Al spinel catalyst was prepared by the ball milling method.Cu Al spinel precursor CAQ-t and corresponding catalyst CA-t were prepared by changing the ball milling time(t=0,2 h,4 h,and 6 h).The catalyst and precursor were characterized by a series of characterization methods of XRD,BET,H2-TPR andXPS analysis.The influence of phase composition and performance of catalytic methanol steam reforming for hydrogen production.The results show that proper ball milling time will in-crease the dispersion of Cu-Al spinel catalyst and CuO,which in turn affects the spinel phase content.When the ball milling time is 4 h,the prepared Cu-Al spinel catalyst has the best dispersion,with the highest spinel content of 90.76%,and it is used in the catalytic methanol steam reforming for produce hydrogen.The reaction temperature is 280℃,when the ratio of hydroalcoholic substances is 2,and the mass space velocity of methanol is 1.05 h-1,the methanol conversion rate is maintained at about 76%,and it remains inactive for 50 h.
关键词
球磨时间/甲醇水蒸气重整制氢/Cu-Al尖晶石/催化性能
Key words
Ball milling time/Methanol steam reforming for hydrogen production/Cu Al spinel/Catalytic performance
维普
万方数据