A Zeolite Imidazolate Framework ZIF-8 Catalyst for Friedel-Crafts Acylation
- 作者：Lien T.L. NGUYEN ; Ky K.A. LE ; Nam T.S. PHAN ; ptsnam@hcmut.edu.vn
- 关键词：imidazolate framework ; zeolite imidazolate framework ZIF-8 ; Friedel-Crafts acylation ; porous material ; catalysis
- 刊名：Chinese Journal of Catalysis
- 出版年：2012
- 期刊代码：3_18722067
- 类别：ce
- 出版时间：April-June, 2012
- 卷：33
- 期：4-6
- 页码：688-696
- 文件大小：625 K
摘要
A zeolite imidazolate framework, ZIF-8, was synthesized and characterized by dynamic laser light scattering, X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, Fourier transform infrared, atomic absorption spectrophotometry, and nitrogen adsorption measurements. The ZIF-8 was highly crystalline and porous with a surface area of over 1600 m2/g. Friedel-Crafts acylation of anisole and benzoyl chloride proceeded well in the presence of ZIF-8 (2-6 mol%) without the need for an inert atmosphere. The reaction afforded a selectivity of 93%-95%to the p-isomer. The solid catalyst can be separated from the reaction mixture by simple centrifugation and reused without significant degradation in catalytic activity. There was no leaching of active acid species into the reaction solution.