四甲基锆与二氧化硅表面的对接：一种用于将CO转化为环状碳酸酯的明确预催化剂。

Docking of tetra-methyl zirconium to the surface of silica: a well-defined pre-catalyst for conversion of CO to cyclic carbonates.

作者信息

Al Maksoud Walid, Saidi Aya, Samantaray Manoja K, Abou-Hamad Edy, Poater Albert, Ould-Chikh Samy, Guo Xianrong, Guan Erjia, Ma Tao, Gates Bruce C, Basset Jean-Marie

机构信息

King Abdullah University of Science & Technology, Physical Science and Engineering KAUST, 23955-6900, Thuwal, Saudi Arabia.

Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, KAUST, Thuwal, 23955-6900, Saudi Arabia.

出版信息

Chem Commun (Camb). 2020 Mar 24;56(24):3528-3531. doi: 10.1039/c9cc07383c.

DOI:10.1039/c9cc07383c

PMID:32103206

Abstract

The metal complex (Zr(CH3)4(THF)2) has been fully synthesized, characterized and grafted onto partially dehydroxylated silica to give two surface species [([triple bond, length as m-dash]Si-O-)Zr(CH3)3(THF)2] (minor) and [([triple bond, length as m-dash]Si-O-)2Zr(CH3)2(THF)2] (major) which have been characterized by SS NMR, IR, and elemental analysis. These supported pre-catalysts exhibit the best conversion of CO2 to cyclic carbonates, as compared to the previously reported SOMC catalysts.

摘要

金属配合物（Zr(CH3)4(THF)2）已完全合成、表征，并接枝到部分脱羟基的二氧化硅上，得到两种表面物种[([三键，长度为 m 破折号]Si-O-)Zr(CH3)3(THF)2]（次要）和[([三键，长度为 m 破折号]Si-O-)2Zr(CH3)2(THF)2]（主要），这些物种已通过固体核磁共振、红外光谱和元素分析进行了表征。与先前报道的单分子催化（SOMC）催化剂相比，这些负载型预催化剂在将二氧化碳转化为环状碳酸酯方面表现出最佳的转化率。