Dehydrogenation of ammonia borane by dealloyed ruthenium catalysts

In this work, ruthenium catalysts were obtained by alloying-dealloying approach and used in the dehydrogenation reaction of ammonia borane. Ruthenium and aluminum were sputtered simultaneously and aluminum was etched from the alloy by dealloying with sodium hydroxide. The resulting catalysts were analyzed with TEM, SEM, and Zeta-Sizer. Aluminum sputtering power was found to be effective on the catalytic activity of the catalysts. Moreover, the highest turnover frequency was calculated as 290.9 min(-1). Also, the activation energy of the dehydrogenation reaction of ammonia borane with Ru particles was found to be 18.43 kJ mol(-1). Furthermore, the catalysts could conserve their performance upto 10 consecutive runs.

Automated summary

In this study, ruthenium catalysts obtained by alloying-dealloying method were used for dehydrogenation reaction of ammonia borane. The sputtering power of aluminum was found to affect the catalytic activity, with the highest turnover frequency calculated as 290.9 min(-1). The activation energy of the dehydrogenation reaction of ammonia borane with Ru particles was determined to be 18.43 kJ mol(-1), and the catalysts could maintain their performance after 10 consecutive runs.