Hydration of α-pinene and camphene over USY zeolites

被引：0
|
作者：
Valente, H [1 ]
Vital, J [1 ]
机构：
[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, CQFB, Dept Quim, P-2825 Monte De Caparica, Portugal
来源：
HETEROGENEOUS CATALYSIS AND FINE CHEMICALS IV | 1997年 / 108卷
关键词：
D O I：
暂无
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 acid catalysed hydration reactions of alpha-pinene and camphene, respectively, using USY catalysts in aqueous acetone at 55 degrees C, are studied. The catalyst samples were prepared from zeolite Y by hydrothermal treatments at temperatures ranging from 450 to 850 degrees C. The so generated extra-framework aluminium species were kept in the samples. The main products of both hydration reactions are alpha-terpineol, in the case of alpha-pinene hydration and isoborneol, when camphene is used as the starting reagent. Although zeolite H-Y is not active as catalyst for these hydration reactions, USY catalysts show a reasonable activity and are very selective to the above mentioned terpenic alcohols. Selectivity increases with the relative concentration of Lewis sites.
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页码：555 / 562
页数：8
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