SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 63 ›› Issue (11): 260-267.DOI: 10.1016/j.cjche.2023.04.026

• Full Length Article • 上一篇    

Pt-Ni core–shell structure with Pt-skin and electronic effect on catalytic performance

Chong Yao, Dandan Ma, Jie Luo, Yixin Chen, Min Tian, Haoxuan Xie, Chunshan Lu, Feng Feng, Xiaoliang Xu, Qingtao Wang, Qunfeng Zhang, Xiaonian Li   

  1. State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • 收稿日期:2023-01-15 修回日期:2023-04-12 出版日期:2023-11-28 发布日期:2024-01-08
  • 通讯作者: Qingtao Wang,E-mail:qtwang@zjut.edu.cn;Qunfeng Zhang,E-mail:zhangqf@zjut.edu.cn;Xiaonian Li,E-mail:xnli@zjut.edu.cn
  • 基金资助:
    This work was funded by the National Natural Science Foundation of China (U20A20119, 22078292 and 22008212).

Pt-Ni core–shell structure with Pt-skin and electronic effect on catalytic performance

Chong Yao, Dandan Ma, Jie Luo, Yixin Chen, Min Tian, Haoxuan Xie, Chunshan Lu, Feng Feng, Xiaoliang Xu, Qingtao Wang, Qunfeng Zhang, Xiaonian Li   

  1. State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2023-01-15 Revised:2023-04-12 Online:2023-11-28 Published:2024-01-08
  • Contact: Qingtao Wang,E-mail:qtwang@zjut.edu.cn;Qunfeng Zhang,E-mail:zhangqf@zjut.edu.cn;Xiaonian Li,E-mail:xnli@zjut.edu.cn
  • Supported by:
    This work was funded by the National Natural Science Foundation of China (U20A20119, 22078292 and 22008212).

摘要: In order to improve the catalytic performance of the nitrobenzene hydrogenation rearrangement to prepare p-aminophenol, a bimetallic Pt-Ni/C (PNC) catalyst was synthesized. Taking advantage of the synergistic effect of Ni and Pt to enhance product selectivity and catalytic performance stability, the electrons in Ni are moved to Pt by the electron effect, which affects the catalyst's ability to activate H2 as well as the amount of hydrogen activated. Furthermore, due to the strong Pt(5d)-Ni(3d) coupling effect, Ni can effectively maintain Pt stability in the acidic system and reduce Pt dissolution. The stability of the PNC can be found to be greatly enhanced compared to the Pt/C (PC) catalyst, and p-aminophenol selectivity is greatly enhanced, showing excellent catalytic performance.

关键词: Nitrobenzene, p-Aminophenol, Pt-Ni/C bimetallic catalyst, Electronic effect, Pt(5d)-Ni(3d) coupling

Abstract: In order to improve the catalytic performance of the nitrobenzene hydrogenation rearrangement to prepare p-aminophenol, a bimetallic Pt-Ni/C (PNC) catalyst was synthesized. Taking advantage of the synergistic effect of Ni and Pt to enhance product selectivity and catalytic performance stability, the electrons in Ni are moved to Pt by the electron effect, which affects the catalyst's ability to activate H2 as well as the amount of hydrogen activated. Furthermore, due to the strong Pt(5d)-Ni(3d) coupling effect, Ni can effectively maintain Pt stability in the acidic system and reduce Pt dissolution. The stability of the PNC can be found to be greatly enhanced compared to the Pt/C (PC) catalyst, and p-aminophenol selectivity is greatly enhanced, showing excellent catalytic performance.

Key words: Nitrobenzene, p-Aminophenol, Pt-Ni/C bimetallic catalyst, Electronic effect, Pt(5d)-Ni(3d) coupling