SYNTHESIS OF Co2P NANOPLATES WITH DUAL-TEMPLATE METHOD AND THEIR CATALYTIC ACTIVITY FOR HYDROLYSIS OF AMMONIA BORANE
The development of a kind of catalyst with high activity and high selectivity under mild conditions is the key to realize the application of hydrolysis of ammonia borane(AB)for hydrogen production.Starting from the construction of P-doped materials,the catalyst with two different proportions of metal salts as the salt template and the transition non-precious metal Co24 as the center metal was prepared.The Co3 O4 precursor was prepared by cobalt acetate and ammonia water,and the Co3 O4 precursor was mixed with NaH2PO4,NaCl and LiCl,and calcined in N2 atmosphere to synthesize Co2P-NaLi catalyst.After washing,the two salt templates were removed to obtain the final Co2P-NaLi catalyst,which was a highly efficient catalyst that could react under mild conditions.The results showed that the catalytic activity of Co2P-NaLi0.15 catalyst was the highest when n(NaCl)∶n(LiCl)=1∶0.15,its initial conversion rate(TOF)was 31.2 min-1 at 298 K under light irradiation,and the activation energy(Ea)for the decomposition of ammonia borane on the catalyst was 60.8 kJ/mol.After 5 cycles,the catalytic still keep good activity,which indicated that it had good stability.
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