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 shu

Core-Shell Structured Cu@CoCr Catalyst: Synthesis and Catalytic Performance for Hydrolysis of Ammonia Borane Aqueous Solution

1.
1. Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing 210093, China;

Corresponding author: ZHAO Bin,
Received Date: 12 November 2012
Available Online: 17 January 2013
Fund Project: 江苏省自然科学基金(No.BK2010387) (No.BK2010387)国家自然科学基金(No.41172239) (No.41172239)中央高校基础科研业务费专项基金(No.1118020513, 1106020513)资助项目。 (No.1118020513, 1106020513)

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 mol_H₂·moL_cat^-1·s^-1 for Cu_0.4@Co_0.5Cr_0.1 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.
- in-situ synthesis;core/shell structure;alloy;ammonia borane;heterogeneous catalysis;hydrogen generation
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