Non‐precious Metal Cu‐Ni Alloy Nanoparticles Supported on Porous Boron Nitride Fibers as Catalysts for Dehydrogenation from Methanolysis of Ammonia‐Borane**

Abstract

Dehydrogenation from methanolysis of ammonia borane is a promising strategy for the development of sustainable hydrogen energy. Developing an effective and inexpensive catalyst is essential. In our study, a series of CuÀ Ni nanoparticles, in the form of alloy, are supported onto porous boron nitride fibers by impregnation reduction. Cu and Ni synergistically interact through the alloys, Cu 0.9 Ni 0.1 /p-BN demonstrates excellent catalytic effect with high turnover frequency (27.1 min À 1 ) and low activation energy (27.8 kJ/mol) at 298 K. Kinetics indicates that the catalyst concentration follows the quasi-primary reaction. Moreover, the pores of the p-BN supporter prevent agglomeration of the metal particles while limiting their size, as well as providing protection to the particles. After passing 8 cycles, the catalyst does not suffer from severe poisoning effects. This work greatly enriches the non-precious metal catalyst system and plays a very meaningful role in the study of dehydrogenation from methanolysis of AB.