H(g) production from dimethylamine borane by Cu/WO NPs catalyst.

Cu NPs supported on tungsten (VI) oxide (WO) were in situ generated from the reduction of Cu ions during dehydrogenation of dimethylamine borane (DMAB). The Cu/WO NPs displayed tangible catalytic activity in H (g) releasing reaction and they were identified by using advanced techniques. Cu/WO NPs were found as active catalyst providing one equiv. H(g) per mole of DMAB. The results from TEM images display the formation of Cu NPs with an average particle size of 4.6 ± 1.0 nm on the surface of WO. Moreover, Cu/WO NPs with various metal loadings were prepared and tested as catalyst in dehydrogenation reaction to find the optimum metal loading on WO support. The highest H generation rate was achieved for 4.0% wt. Cu/WO catalyst with TOF value of 39 h in the reaction conditions. Additionally, effect of various catalyst concentration and temperature is discussed on the reaction kinetics for reaction catalyzed by Cu/WO NPs.