Role of Mo in CO_2 reforming of CH_4 over Mo promoted Ni/Al_2O_3 catalysts

摘要

A series of Ni/Al_2O_3 catalysts modified by Mo was prepared to show the effect of preparation sequence and reduction step on catalytic properties as well as the thioresistance and carbon deposition during CO_2 reforming of methane. The catalysts were prepared by successive impregnations with Ni and Mo salts (2% p/p Ni and Mo/Ni = 0.06). The solids were activated by reduction in pure H_2 and H_2/He (1:10) mixture. The results indicate that a low amount of Mo sensibly increased the resistance to sulfur and led to a decrease in carbon deposition.