第一作者：Rongxiu Guo

通讯作者：Xiaodong Li, Dun Niu, Hong-bin Sun

合写作者：Guangqi He, Xinyu Chen, Xinyue Zhang, Ze-nan Hu

发表刊物：Advanced Materials Interfaces

期号：11

卷号：8

影响因子：4.3

DOI码：10.1002/admi.202100013

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：GERMANY

摘要：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.

论文编号：WOS:000647481100001

学科门类：理学

一级学科：化学

页面范围：2100013

ISSN号：2196-7350

是否译文：否