Jian Zhang+, Caiyan Zheng+, Maolin Zhang, Yajun Qiu, Qi Xu, Weng-Chon Cheong, Wenxing Chen, Lirong Zheng, Lin Gu, Zhengpeng Hu, Dingsheng Wang*, Yadong Li*, Controlling N-doping type in carbon to boost single-atom site Cu catalyzed transfer hydrogenation of quinoline. Nano Research 2020, 13, 3082-3087.

Release time:2023-05-20 Hits:

DOI number:10.1007/s12274-020-2977-4

Journal:Nano Research

Abstract:Single-atom site (SA) catalysts on N-doped carbon (CN) materials exhibit prominent performance for their active sites being M-N-x. Due to the commonly random doping behaviors of N species in these CN, it is a tough issue to finely regulate their doping types and clarify their effect on the catalytic property of such catalysts. Herein, we report that the N-doping type in CN can be dominated as pyrrolic-N and pyridinic-N respectively through compounding with different metal oxides. It is found that the proportion of distinct doped N species in CN depends on the acidity and basicity of compounded metal oxide host. Owing to the coordination by pyrrolic-N, the SA Cu catalyst displays an enhanced activity (two-fold) for transfer hydrogenation of quinoline to access the valuable molecule tetrahydroquinoline with a good selectivity (99%) under mild conditions. The higher electron density of SA Cu species induced by the predominate pyrrolic-N coordination benefits the hydrogen transfer process and reduces the energy barrier of the hydrogenation pathway, which accounts for the improved catalytic effeciency.

Indexed by:Journal paper

Discipline:Natural Science

Document Type:J

Volume:13

Page Number:3082-3087

Translation or Not:no

Date of Publication:2020-07-08

Included Journals:SCI

Links to published journals:https://link.springer.com/article/10.1007/s12274-020-2977-4