Alkylation of phenol with tert-butyl alcohol catalysed by zeolite Hβ

被引：101
|
作者：
Zhang, K [1 ]
Huang, CH [1 ]
Zhang, HB [1 ]
Xiang, SH [1 ]
Liu, SY [1 ]
Xu, D [1 ]
Li, HX [1 ]
机构：
[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
来源：
APPLIED CATALYSIS A-GENERAL | 1998年 / 166卷 / 01期
关键词：
phenol; alkylation; zeolite H beta; tert-butylalcohol; selectivity; o-tert-butyl phenol; p-tert-butyl phenol; 2,4-di-tert-phenol;
D O I：
10.1016/S0926-860X(97)00244-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The catalytic properties of zeolite beta in the tert-butylation of phenol are reported. The influence of various reaction parameters such as temperature, space velocity, molar ratio of the reactants are discussed. Medium acid sites on zeolite H beta are advantageous in producing p-TBP, and that of strong acid sites are helpful for the formation of 2,4-DTBP, while weak acid sites are effective in producing o-TBP. In order to enhance the selectivity of p-TBF, a proper reaction temperature (418 K), lower reactant ratio (molar ratio) and moderate acidities on zeolite H beta are recommended. On the basis of the behaviour obtained in the cases mentioned, information about the reaction path models is provided. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：89 / 95
页数：7
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