文献类型：期刊文献

英文题名：Solid Acid Catalysts in Tert-Butyl Removal Reaction of 4,6-DBMC: Performance Insights and Industrial Implications

作者：Wang, Xiangke[1];Meng, Xuan[1];Shi, Li[1];Liu, Naiwang[1];Wang, Jiyu[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：155

期号：5

外文期刊名：CATALYSIS LETTERS

收录：;EI(收录号：20251618273842);WOS:【SCI-EXPANDED(收录号:WOS:001459922100003)】；

基金：The authors would like to extend their sincere appreciation to CeShiHui (www.ceshihui.cn) for providing support in the thermogravimetric (TG) testing part of this paper.

语种：英文

外文关键词：Solid acid catalysts; Zeolite; Mesoporous material; Tert-butyl removal reaction; High stability

摘要：In the tert-butyl removal reaction, solid acid catalysts have emerged as a preferred alternative to liquid acid catalysts due to their environmentally friendly advantages. Various zeolites, such as ZSM-5, MCM-41, USY, and H beta, as well as mesoporous materials, such as gamma-Al2O3 and active clay were employed for the first time to prepare m-cresol through the tert-butyl removal reaction of 4,6-di-tert-butyl-m-cresol (4,6-DBMC). gamma-Al2O3 and active clay catalysts were found to have excellent catalytic performance in this reaction. The thermodynamic properties of the tert-butyl removal reaction of 4,6-DBMC were studied. Under different temperature and solvent conditions, the product distribution was investigated. A proposed reaction pathway and mechanism were proposed. And through cyclic experiments, the stability of gamma-Al2O3 and active clay catalysts was investigated separately. After six cycles, the m-cresol yield for active clay catalyst was still maintained at about 90%. The causes of deactivation of the two catalysts were analyzed. After regeneration, both catalysts exhibited good regeneration performance. This study offers a basis for the selection of solid acid catalysts for the tert-butyl groups removal of 4,6-DBMC.