Xiangke Wang, Xuan Meng, Li Shi, Naiwang Liu, Jiyu Wang
{"title":"固体酸催化剂在4,6- dbmc脱叔丁基反应中的应用：性能观察和工业意义","authors":"Xiangke Wang, Xuan Meng, Li Shi, Naiwang Liu, Jiyu Wang","doi":"10.1007/s10562-025-04985-y","DOIUrl":null,"url":null,"abstract":"<div><p>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 γ-Al<sub>2</sub>O<sub>3</sub> 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). γ-Al<sub>2</sub>O<sub>3</sub> 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 γ-Al<sub>2</sub>O<sub>3</sub> 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. </p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Solid Acid Catalysts in Tert-Butyl Removal Reaction of 4,6-DBMC: Performance Insights and Industrial Implications\",\"authors\":\"Xiangke Wang, Xuan Meng, Li Shi, Naiwang Liu, Jiyu Wang\",\"doi\":\"10.1007/s10562-025-04985-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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 γ-Al<sub>2</sub>O<sub>3</sub> 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). γ-Al<sub>2</sub>O<sub>3</sub> 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 γ-Al<sub>2</sub>O<sub>3</sub> 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. </p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":\"155 5\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-025-04985-y\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-025-04985-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Solid Acid Catalysts in Tert-Butyl Removal Reaction of 4,6-DBMC: Performance Insights and Industrial Implications
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 γ-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). γ-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 γ-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.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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