Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (7): 1185-1194.DOI: 10.1016/S1872-2067(20)63747-0

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Geometric and electronic effects on the performance of a bifunctional Ru2P catalyst in the hydrogenation and acceptorless dehydrogenation of N-heteroarenes

Fangjun Shaoa,†, Zihao Yaoa,†, Yijing Gaoa, Qiang Zhoua, Zhikang Baoa, Guilin Zhuanga, Xing Zhonga, Chuan Wub, Zhongzhe Weia,*(), Jianguo Wanga,#()   

  1. aInstitute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China
    bKey Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
  • Received:2020-10-05 Accepted:2020-11-29 Online:2021-07-18 Published:2020-12-10
  • Contact: Zhongzhe Wei,Jianguo Wang
  • About author:# Tel: +86-571-88871037; E-mail: jgw@zjut.edu.cn
    * Tel: +86-571-88320190; E-mail: weizhzhe@zjut.edu.cn;
    First author contact:

    These authors contributed equally to this work.

  • Supported by:
    National Natural Science Foundation of China(21625604);National Natural Science Foundation of China(22008213);National Natural Science Foundation of China(21671172);National Natural Science Foundation of China(22008211);National Natural Science Foundation of China(21878272);Zhejiang Provincial Natural Science Foundation(LQ21B060005);Zhejiang Innovation Team(2017R5203);National Postdoctoral Innovative Talent Support Program(BX20180275);China Postdoctoral Science Foundation(2018M642478)

Abstract:

The development of bifunctional catalysts for the efficient hydrogenation and acceptorless dehydrogenation of N-heterocycles is a challenge. In this study, Ru2P/AC effectively promoted reversible transformations between unsaturated and saturated N-heterocycles affording yields of 98% and 99%, respectively. Moreover, a remarkable enhancement in the reusability of Ru2P/AC was observed compared with other Ru-based catalysts. According to density functional theory calculations, the superior performance of Ru2P/AC was ascribed to specific synergistic factors, namely geometric and electronic effects induced by P. P greatly reduced the large Ru-Ru ensembles and finely modified the electronic structures, leading to a low reaction barrier and high desorption ability of the catalyst, further boosting the hydrogenation and acceptorless dehydrogenation processes.

Key words: Ruthenium phosphide, Bifunction catalyst, Reaction mechanism, Geometric and electronic effects, Hydrogenation, Acceptorless dehydrogenation