CoOx-supported RhCu alloy nano-materials as a highly efficient catalyst for hydrolytic dehydrogenation of ammonia borane

Hydrolytic dehydrogenation of Ammonia-borane (NH3BH3, abbreviation AB) has attracted much attention due to its high hydrogen content and stability. Therefore, the design and construction of low cost and high performance catalysts for AB hydrolysis are of great significance. In this work, a series of RhCu/CoOx alloy catalysts were prepared by a in-situ reduction method. The catalytic activity of hydrolytic dehydrogenation of AB was optimized by regulating the molar ratio of Rh to Cu in the RhCu/CoOx catalysts. The results verify that Rh1Cu2/CoOx has the best catalytic activity for hydrolytic dehydrogenation of AB, and the corresponding hydrolysis reaction type was first order. The turnover frequency (TOF) reached 670.95 mol(H2) molcat(-1) min(-1), and the apparent activation energy (Ea) was 28.86 kJ mol(-1), showing excellent catalytic performance for hydrolytic dehydrogenation of AB. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

By adjusting the molar ratio of Rh to Cu in the RhCu/CoOx catalysts, the Rh1Cu2/CoOx catalyst showed the best catalytic activity for hydrolytic dehydrogenation of AB, with a turnover frequency (TOF) of 670.95 mol(H2) molcat(-1) min(-1) and an apparent activation energy (Ea) of 28.86 kJ mol(-1).