Catalytic Reactivity of Reaction Synthesized M3AI Alloy (Free and Boron-Doped)

摘要

Micro-alloyed nickel aluminide Ni_3Al and boron-doped Ni_3Al, containing 0.15 wt% B, were processed via powder metallurgy. The effect of the boron on the crystalline structure, porosity, surface area, and toluene catalytic hydrogenation was studied. The results indicate that the doping of boron decreases the percentage total porosity of micro-alloyed nickel aluminide. Consequently, slight grain growth in the case of B-doped alloy occurred. Such changes in the alloy structure had a negative influence on the catalytic activity of the nickel aluminide as a catalyst where the selectivity of the alloy toward the hydrogenation of toluene decreased from ~95 to ~64%.