H3PO4/MCM-41 催化苯酚与叔丁醇气相烷基化反应

催化学报 ›› 2010, Vol. 31 ›› Issue (7): 759-764.

H3PO4/MCM-41 催化苯酚与叔丁醇气相烷基化反应

Mehran GHIACI*, Behzad AGHABARARI

Department of Chemistry, Isfahan University of Technology, Isfahan 8415683111, Iran

收稿日期:2010-07-25 出版日期:2010-07-25 发布日期:2010-07-25

Vapor-Phase Alkylation of Phenol with Tert-butyl Alcohol Catalyzed by H3PO4/MCM-41

Mehran GHIACI*, Behzad AGHABARARI

Department of Chemistry, Isfahan University of Technology, Isfahan 8415683111, Iran

Received:2010-07-25 Online:2010-07-25 Published:2010-07-25

摘要/Abstract

摘要： The catalytic performance of Al-MCM-41 containing 5?5 wt% H3PO4 was studied for the vapor phase alkylation of phenol with tert-butyl alcohol (TBA) from 383 to 493 K. 4-Tert-butyl phenol was produced as the main product with moderate selectivity. The product distribution depends on the reaction temperature, number of acid sites, and the Br鰊sted to Lewis sites ratios. A lower molar ratio of reactants (TBA/phenol = 2) and a higher space velocity facilitated the production of 4-tert-butyl phenol. The influence of various parameters such as temperature, reactant feed molar ratio, feed rate, and time on stream were investigated for conversion yield and product selectivity.

关键词: alkylation, tert-butylation, phenol, tert-butyl alcohol, MCM-41

Abstract: The catalytic performance of Al-MCM-41 containing 5?5 wt% H3PO4 was studied for the vapor phase alkylation of phenol with tert-butyl alcohol (TBA) from 383 to 493 K. 4-Tert-butyl phenol was produced as the main product with moderate selectivity. The product distribution depends on the reaction temperature, number of acid sites, and the Br鰊sted to Lewis sites ratios. A lower molar ratio of reactants (TBA/phenol = 2) and a higher space velocity facilitated the production of 4-tert-butyl phenol. The influence of various parameters such as temperature, reactant feed molar ratio, feed rate, and time on stream were investigated for conversion yield and product selectivity.

Key words: alkylation, tert-butylation, phenol, tert-butyl alcohol, MCM-41

Mehran GHIACI*;Behzad AGHABARARI. H3PO4/MCM-41 催化苯酚与叔丁醇气相烷基化反应[J]. 催化学报, 2010, 31(7): 759-764.

Mehran GHIACI*;Behzad AGHABARARI. Vapor-Phase Alkylation of Phenol with Tert-butyl Alcohol Catalyzed by H3PO4/MCM-41[J]. Chinese Journal of Catalysis, 2010, 31(7): 759-764.

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