Tert-butylation of toluene over zeolite catalysts

被引：39
作者：
Mravec, D
Zavadan, P
Kaszonyi, A
Joffre, J
Moreau, P
机构：
[1] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Dept Organ Technol, Bratislava 81237, Slovakia
[2] Ecole Natl Super Chim, UMR 5618, Lab Mat Catalyt & Catalyse & Chim Organ, F-34296 Montpellier 5, France
来源：
APPLIED CATALYSIS A-GENERAL | 2004年 / 257卷 / 01期
关键词：
toluene; tert-butylation; 4-tert-butyltoluene; alkylation; zeolites;
D O I：
10.1016/S0926-860X(03)00633-1
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：
Three large-pore zeolites (H-MOR, H-Y and H-BEA) were studied as catalysts in the liquid-phase tert-butylation of toluene by tert-butanol. The catalytic activity and para-selectivity of zeolite catalysts and the main secondary reactions (isomerization of 4-tert-butyltoluene and its dealkylation) are discussed. The most active zeolite catalysts for the studied reaction were H-MOR (17.5) and H-BEA (12.5) zeolites. The most para-selective were mordenite zeolites with maximum selectivity to desired 4-tert-butyl toluene near 90%, which was supported by molecular modelling. Tert-butylation of toluene over zeolite catalysts can be an ecofriendly process for obtaining 4-tert-butyltoluene which is intermediate product for fine chemicals. (C) 2003 Elsevier B.V. All rights reserved.
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页码：49 / 55
页数：7
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