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Electronic Ni–N interaction enhanced reductive amination on an N-doped porous carbon supported Ni catalyst
Catalysis Science & Technology ( IF 5 ) Pub Date : 2022-10-18 , DOI: 10.1039/d2cy01551j
Wenjing Song , Yujie Wan , Yuefeng Li , Xin Luo , Weiping Fang , Quanxing Zheng , Pengfei Ma , Jianping Zhang , Weikun Lai

Low cost and high efficiency catalysts for the reductive amination of carbonyl compounds are critical to the utilization of renewable biomass. In this paper, a highly efficient N-doped porous carbon supported Ni catalyst was prepared by a template-assisted pyrolysis and impregnation method. In the presence of NH3 and H2, the as-prepared catalyst could effectively catalyze the reductive amination of various carbonyl compounds into corresponding primary amines with high yield and excellent stability. Comprehensive characterization demonstrated that the reductive amination of furfural towards furfuryl amine was linked to the formation of Ni–Nx sites and the electronic interaction of N and Ni species on the N-doped carbon surface, which promoted the reductive amination of C[double bond, length as m-dash]O bonds and significantly reduced the activation energy in reductive ammonolysis of trimers and Schiff base intermediates. This work provided a new insight into rational design of reductive amination catalysts for primary amine production.

中文翻译:

电子 Ni-N 相互作用增强了 N 掺杂多孔碳负载 Ni 催化剂上的还原胺化

用于羰基化合物还原胺化的低成本和高效催化剂对于可再生生物质的利用至关重要。本文采用模板辅助热解浸渍法制备了一种高效的N掺杂多孔碳负载Ni催化剂。在NH 3和H 2存在下,所制备的催化剂可以有效地催化各种羰基化合物还原胺化成相应的伯胺,收率高,稳定性好。综合表征表明,糠醛还原胺化为糠胺与 Ni-N x的形成有关位点和 N 和 Ni 物种在 N 掺杂碳表面上的电子相互作用,促进了[双键,长度为 m-dash]CO 键的还原胺化,显着降低了三聚体和席夫碱中间体还原氨解的活化能。这项工作为合理设计用于伯胺生产的还原胺化催化剂提供了新的见解。
更新日期:2022-10-18
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