Efficient multimetallic catalytic systems for the selective hydrogenation of nitric acid

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.

New multimetallic catalytic systems of Pd + Ni/C, Pd + Ni + Fe/C and Pd + Au + Fe/C (combined with GeO2) were developed for the selective hydrogenation of nitric acid to hydroxylamine. The catalytic activity and selectivity of these multimetallic catalytic systems are definitely higher than those of not only the general non-doped Pd/C system but also the Pd + Fe/C system developed recently. Figure optionsDownload as PowerPoint slide