Mechanism of TAME and TAEE synthesis from diffuse-reflectance FTIR analysis

被引：17
作者：
Boz, N
Dogu, T [1 ]
Murtezaoglu, K
Dogu, G
机构：
[1] Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey
[2] Gazi Univ, Dept Chem Engn, TR-06570 Ankara, Turkey
来源：
CATALYSIS TODAY | 2005年 / 100卷 / 3-4期
关键词：
TAME; TAEE; reaction mechanism; drifts;
D O I：
10.1016/j.cattod.2004.09.074
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Diffuse-reflectance FTIR results obtained with tert-amyl-methyl-ether (TAME), ethanol, methanol, i-amylenes and mixtures of i-amylenes with alcohols supported a Langmuir-Hinshelwood type reaction mechanism involving adsorbed i-amylene molecules, which form a bridged structure between the adsorbed alcohols and the -SO3H sites of Amberlyst-15. Number of available sites involved in the adsorption of i-olefins is drastically decreased with an increase in alcohol concentration. The reaction rate model, which was proposed basing on the DRIFTS results, was shown to give good agreement with the published initial rate data for TAEE synthesis. The rate of tert-amyl-ethyl-ether (TAEE) formation was found to give a rather sharp maximum at an ethanol activity smaller than 0.1. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：419 / 424
页数：6
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