Alkylation of phenol with tert-butyl alcohol over dealuminated HMCM-68 zeolites

被引：18
|
作者：
Li, Jintao [1 ,2 ,3 ]
Lou, Lan-Lan [1 ,2 ,3 ]
Yang, Yajing [1 ,2 ,3 ]
Hao, He [1 ,2 ,3 ]
Liu, Shuangxi [1 ,2 ,3 ]
机构：
[1] Nankai Univ, Inst New Catalyt Mat Sci, Coll Chem, Tianjin 300071, Peoples R China
[2] Nankai Univ, Key Lab Adv Energy Mat Chem, Coll Chem, Minist Educ, Tianjin 300071, Peoples R China
[3] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2015年 / 207卷
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Alkylation; MCM-68; Dealumination; Steaming; Acid leaching; LARGE-PORE ZEOLITES; CATALYTIC PERFORMANCE; HZSM-5; ZEOLITES; MSE TOPOLOGY; H-BETA; MCM-68; BUTANOL; STEAM;
D O I：
10.1016/j.micromeso.2015.01.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A series of dealuminated HMCM-68 zeolites were prepared by treatment with steaming or hydrochloric/citric acid leaching. Their catalytic properties were studied using the alkylation of phenol with tert-butyl alcohol as a test reaction. The HMCM-68 zeolite modified by citric acid for 8 h (CAZ8) showed the best catalytic performance due to its improved structural and acidic properties, confirmed by methods of XRD, ICP-AES, SEM, N-2-adsorption, Al-27 MAS NMR and NH3-TPD. Furthermore, it is proposed that citric acid treatment is the most suitable method for dealumination of HMCM-68 zeolite in the alkylation of phenol, which results in the zeolites having improved adsorption polarity, as well as enlarged surface area and pore volume for the desired transformation. The factors affecting the reaction over CAZ8 have also been extensively investigated. (C) 2015 Elsevier Inc. All rights reserved.
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页码：27 / 32
页数：6
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