EFFECTS OF OXIDATION OF LaNi₅ ON Ni DISPERSION

Abstract

It is known that the catalytic activity of LaNi₅ increases during CO hydrogenation due to a structure change into Ni/La₂O₃ by oxygen. Oxidation treatment is therefore thought to be useful in controlling nickel dispersion on the surface area. However, few studies of the relation between oxidation of LaNi₅ and nickel dispersion have been made. Consequently, in this study the effects of oxidation on nickel dispersion under various oxidation temperatures and uptakes of oxygen per total weight were examined.