Reactions of ethanol over metal oxides

被引：206
作者：
Idriss, H
Seebauer, EG
机构：
[1] Univ Auckland, Dept Chem, Auckland, New Zealand
[2] Univ Illinois, Dept Chem Engn, Urbana, IL 61801 USA
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 152卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
reactions; ethanol; metal oxides;
D O I：
10.1016/S1381-1169(99)00297-6
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 reaction of ethanol over a series of oxides (Fe2O3, Fe2O3/CaO, Fe3O4, TiO2, CaO, and SiO2) has been investigated. The main reaction product in all cases is acetaldehyde, with secondary products acetone and ethyl acetate. At 473 K, the rate Constant k decreases according to the series Fe2O3 > Fe3O4 > CaO > TiO2 >> SiO2. Titration of basic sites by CO2 adsorption at room temperature shows that the reaction rate can be successfully normalised by basic site density for oxides that adsorb CO2 except for CaO. Acetone production, presumably via acetate ketonization, is highest over TiO2 while ethyl acetate formation, by Tishchenko reaction, is highest over Fe2O3. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：201 / 212
页数：12
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