| Phenol Tert-Butylation Catalyzed by Zeolite H-Mordenite |
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| 作者姓名： | 韩森 李振花 张悝 |
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| 作者单位： | KeyLaboratoryforGreenChemicalTechnologyofEducationMinistryofChina,SchoolofChemicalEngineeringandTechnology,TianjinUniversity,Tianjin300072,China |
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| 基金项目： | SupportedbyNationalNaturalScienceFoundationofChina(No.29133071)andPostdoctoralFoundationofChina. |
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| 摘 要： | Para-tert-butyl phenol (p-TBP) and 2,4-di-tert-butyl phenol ( 2,4-DTBP) are wi.dely used for the preparation of antioxidants. Zeolite catalysts showed good performance for the synthesis of p-TBP and 2,4-DTBP. In this work, zeolite H-mordenite (HM) catalyst was prepared and the alkylation of phenol with tert-butyl alcohol over zeolite HM catalyst was investigated at different reaction conditions. It is found that increasing temperature enhances the selectivity to p-TBP and the optimum reaction temperature for phenol conversion is 438 K. Increasing flow rate decreases phenol conversion apparently while the selectivity to p-TBP has a little increase. The suitable tert-butyl alcohol/phenol molar ratio is 2. Lower alcohol/phenol molar ratios are beneficial to p-TBP while higher ones are helpful for producing 2,4-DTBP.
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| 关 键 词： | 苯酚 沸石 催化反应 烷化反应 叔丁基 |
Phenol Tert-Butylation Catalyzed by Zeolite H-Mordenite |
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| HAN Sen,LI Zhenhua,ZHANG Kui.Phenol Tert-Butylation Catalyzed by Zeolite H-Mordenite[J].Transactions of Tianjin University,2005,11(2):89-91. |
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| Authors: | HAN Sen LI Zhenhua ZHANG Kui |
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| Institution: | Key Laboratory for Green Chemical Technology of Education Ministry of China, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | Para-tert-butyl phenol (p-TBP) and 2,4-di-tert-butyl phenol (2,4-DTBP) are widely used for the preparation of antioxidants. Zeolite catalysts showed good performance for the synthesis of p-TBP and 2,4-DTBP. In this work, zeolite H-mordenite (HM) catalyst was prepared and the alkylation of phenol with tert-butyl alcohol over zeolite HM catalyst was investigated at different reaction conditions. It is found that increasing temperature enhances the selectivity to p-TBP and the optimum reaction temperature for phenol conversion is 438 K. Increasing flow rate decreases phenol conversion apparently while the selectivity to p-TBP has a little increase. The suitable tert-butyl alcohol/phenol molar ratio is 2. Lower alcohol/phenol molar ratios are beneficial to p-TBP while higher ones are helpful for producing 2,4-DTBP. |
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| Keywords: | phenol tert-butyl alcohol zeolite H-mordenite (HM) alkylation |
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