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

摘要

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 Cu-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-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.