第一作者：Haimeng Tian

通讯作者：Hong-Bin Sun, Qionglin Liang

合写作者：Junjie Zhou, Yunong Li, Yiming Wang, Lei Liu, Yongjian Ai, Ze-Nan Hu, Jifan Li, Rongxiu Guo, Zhibo Liu

发表刊物：Chemcatchem

期号：22

卷号：11

影响因子：3.8

DOI码：10.1002/cctc.201901491

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：GERMANY

摘要：Modifying the surface of metal catalyst is a crucial subject for improving the heterogeneous metal catalysts. It is still a great challenge to understand the structure-activity relationship (SAR) between the surface supporting groups and the metal particles. Herein, Rh NPs supported on the magnetic silica sphere with various functional groups (-NH2, -SH, -SO3H, -N=CH2, -Cl, -NHCOCH3 and -NHCH2Ph) have been prepared for catalytic hydrogenation of nitroarenes under atmospheric pressure at room temperature. We discover that the chemical state of Rh NPs depends on the supporting groups significantly. The electron-donating functionalities can effectively elevate the Rh-0/Rh3+ ratio, which increase the catalytic performance both in conversion and selectivity. The amino group decorated catalyst has such a good selectivity that no dechlorination reaction is observable in the hydrogenation of 2-chloro-3-nitropyridine. What's more, by introducing magnetic Fe3O4 nuclei and mesoporous silica encapsulating layer, the catalyst can be recovered conveniently by an external magnet, and can be reused 10 cycles without any loss of activity.

关键字：Electron density Functional groups Rh nanoparticles Atmospheric hydrogen Catalytic hydrogenation

论文编号：WOS:000490012300001

学科门类：理学

一级学科：化学

页面范围：5543-5552

ISSN号：1867-3880

是否译文：否