Citation: SHEN Xiao-Chen, DAI Min, GAO Ming, WANG Zhi-Bin, ZHAO Bin, DING Wei-Ping. Core-Shell Structured Cu@CoCr Catalyst: Synthesis and Catalytic Performance for Hydrolysis of Ammonia Borane Aqueous Solution[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(5): 999-1006. doi: 10.3969/j.issn.1001-4861.2013.00.145
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The core/shell structured ternary alloy of Cu@CoCr was synthesized by a one-step in-situ synthesis method under mild conditions. The catalytic performance of Cu@CoCr was studied for the hydrolysis of NH3BH3 (AB) aqueous solution. The TOF (turn over frequency) of 0.242 0 molH2·moLcat-1·s-1 for Cu0.4@Co0.5Cr0.1 catalyst on AB hydrolysis reaction is close to the noble-metal based catalysts, such as Pt, Pd, etc. The activation energy of this catalyst is only 35 kJ·mol-1. After 5 cycles, this catalyst still keeps 35% of its initial activity. Compared to the non-core/shell structured CuCoCr alloy, the Cu@CoCr catalyst shows great improvements in activity, stability and reusability. Furthermore, the Cu@CoCr catalysts could be recovered by a magnet based on its magnetic properties.
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