Synthesis of ionones by cyclization of pseudoionone on solid acid catalysts

被引：15
|
作者：
Diez, V. K. [1 ]
Apesteguia, C. R. [1 ]
Di Cosimo, J. I. [1 ]
机构：
[1] UNL CONICET, INCAPE, GICIC, RA-3000 Santa Fe, Argentina
来源：
CATALYSIS LETTERS | 2008年 / 123卷 / 3-4期
关键词：
ionone; heteropolyacid; acid catalysis; tungstophosphoric acid;
D O I：
10.1007/s10562-008-9453-1
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：
Ionone synthesis (alpha, beta and gamma isomers) by pseudoionone cyclization was studied on zeolite HBEA, Amberlyst 35W, SiO2-Al2O3, and unsupported and silica-supported heteropolyacids (HPA/SiO2). Ionone formation was preferentially promoted on strong Bronsted acid sites. A 79% ionone yield was obtained on 58.5 wt.% HPA/SiO2 after 1.5 h of reaction at 383 K and 250 kPa. This value is similar to the best yields reported for the homogeneously-catalyzed reaction using sulfuric acid.
引用
收藏
页码：213 / 219
页数：7
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