Efficient multimetallic catalytic systems for the selective hydrogenation of nitric acid Original Research Article

New multimetallic catalytic systems for the selective hydrogenation of nitric acid to hydroxylamine were developed by investigating the promoter effect of one or more additional metals from Group 8 to 11 on Pd/C (combined with GeO2). Among various multimetallic catalytic systems investigated here, Pd + Ni/C, Pd + Ni + Fe/C, and Pd + Au + Fe/C (combined with GeO2) were found to be particularly effective systems, which provided much higher catalytic activity as well as higher selectivity than those of not only the non-doped Pd/C system but also the Pd + Fe/C system developed recently.