Enhanced ortho-selective t–butylation of phenol over sulfonic acid functionalized mesopore MTW zeolites  

作　　者：Baoyu Liu Feng Xiong Jianwen Zhang Manna Wang Yi Huang Yanxiong Fang Jinxiang Dong 

机构地区：[1]School of Chemical Engineering and Light Industry,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery,Guangzhou Key Laboratory of Clean Transportation Energy Chemistry,Guangdong University of Technology,Guangzhou 510006,China [2]Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory),Jieyang 515200,China [3]School of Engineering,Institute for Materials&Processes,The University of Edinburgh,Robert Stevenson Road,Edinburgh EH93FB,United Kingdom

出　　处：《Chinese Journal of Chemical Engineering》2023年第8期1-7,共7页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (21978055, 22278090);Natural Science Foundation of Guangdong Province, China (2022A1515012088);the Science and Technology Planning Project of Guangdong Province, China (22A0505050073, 2022A0505030013);the Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, China (2021GDKLPRB10);the "High-level Talents Program" of the Pearl River, China (2017GC010080)。

摘　　要：Novel organo-inorganic hybrid materials(MTW-x-SO_(3)H) have been fabricated by immobilizing 3-mercap topropyltriethoxysilane onto mesopore MTW zeolites, which is treated via a simple oxidation process with hydrogen peroxide as the oxidant to transform sulfhydryl group into sulfonic acid group. The organic sulfhydryl groups are covalently bonded to the external surface of MTW zeolites through the condensation between siloxane arising from organic fragments with silanol groups on the surface of MTW zeolites, the hybrids contain sulfonic acid group within the external surface of MTW zeolites and an opened mesoporous system in the matrix of MTW zeolites, which provide enough accessible Brùnsted acid sites for the alkylation between phenol with tert-butyl alcohol. Through this methodology it's possible to prepare multifunctional materials where the plenty of mesopores are benefit for the introduction of larger numbers of sulfonic acid groups that contributes to activity during reactions, resulting in high activity(>55%) of MTW-4-SO_(3)H and desired selectivity(>56%) of 2-TBP(2-tert-butyl phenol) in the alkylation between phenol with tert-butyl alcohol.

关 键 词：MTW Zeolites ACIDITY Catalysis ALKYLATION 

分 类 号：TQ203.2[化学工程—有机化工]