First Author:Rongxiu Guo

Correspondence Author:Xiaodong Li, Dun Niu, Hong-bin Sun

Co author:Guangqi He, Xinyu Chen, Xinyue Zhang, Ze-nan Hu

Title of Paper:Ultrathin Modified Silica "Skin" for the Transfer Hydrogenation Catalyst: Improving Selectivity by Adjusting Surface Wettability

Journal:Advanced Materials Interfaces

Issue:11

Volume:8

Impact Factor:4.3

DOI Number:10.1002/admi.202100013

Institution:Department of Chemistry, Northeastern University

Teaching and Research Group:物理化学

Place of Publication:GERMANY

Summary:Surface wettability of heterogeneous catalysts plays a crucial role in the catalytic activity and selectivity. In this work, an ultra-thin modified silica coating is firstly used as the "skin" to adjust the surface hydrophilicity of the catalyst, which promotes the catalytic activity and selectivity in the transfer hydrogenation of nitriles. The ultrathin-modified silica "skin" with 2-3 nm thickness is fabricated by the consecutive hydrolysis of (3-aminopropyl)triethoxysilane and n-propyltriethoxysilane, and the bimetallic catalyst Fe3O4@PtCu is encapsulated in the coating. The modified catalyst demonstrated significant catalytic efficiency for hydrogenation of benzonitrile to dibenzylamine. The reaction performs 93% conversion and 99% selectivity in "green" solvent H2O. Furthermore, the modified silica "skin" encapsulates the PtCu nanoparticles to prevent the leaching of active sites, thus brings excellent catalytic recyclability. More than Fe3O4@PtCu, the modified silica "skin" is applicable to a diverse range of catalysts, that is, PtCu/SiO2, PtCu/Al2O3, and PtCu/UiO-66, endowing them with additional catalytic activity and selectivity in the hydrogenation of nitriles.

Document Code:WOS:000647481100001

Discipline:Natural Science

First-Level Discipline:Chemistry

Page Number:2100013

ISSN:2196-7350

Translation or Not:No