【摘要】 以自然结晶法制备的ZIF-67为前驱体，采用包裹-刻蚀-碳化策略，得到大小均匀的纳米碳笼（Cage-C），再于液相条件下以碳笼为载体负载上活性金属镍（Ni），成功制备了非贵金属磁性催化剂Ni@Cage-C，并应用于对硝基苯酚催化还原反应以考察其多相催化性能。结果表明：优化条件下制备的Ni@Cage-C催化剂为碳笼包裹单质镍结构，其平均颗粒大小为550 nm；将Ni@Cage-C用于对硝基苯酚催化还原反应时，催化性能明显优于参照催化剂雷尼镍（Raney-Ni）。质量反应速率常数kM为6.11 mg-1·min-1，催化效率达到98.87%，循环反应十圈后活性仍高于初始活性的85%。更多还原

【Abstract】 In this paper,a non-noble metal magnetic catalyst Ni@Cage-C was successfully prepared.By using ZIF-67 as the precursor,carbon cage （Cage-C） nanoparticles with uniform size were obtained by means of encapsulation-etching-carbonization strategy.Then the active metal nickel was supported by Cage-C in liquid phase.The catalytic reduction of p-nitrophenol to p-aminophenol was employed to evaluate the catalytic performance of Ni@Cage-C.The results indicated that the Ni@Cage-C catalyst prepared under optimized conditions had a carbon cage coated nickel structure with an average particle size of about 550 nm.When it was used for the reduction of p-nitrophenol,its comprehensive catalytic performance was obviously better than the reference catalyst （RaneyNi）,with the mass reaction rate constant kM of 6.11 mg^-1·min^-1,the catalytic efficiency of 98.87%,and the catalytic conversion rate maintaining more than 85% after 10 cycles of the catalytic reaction.更多还原