Ultrasonic irradiation as activity and selectivity improving factor in the hydrogenation of cinnamaldehyde over Pt/SiO2 catalysts

被引：56

作者：

Szollosi, G

Torok, B

Szakonyi, G

Kun, I

Bartok, M

机构：

[1] Hungarian Acad Sci, Organ Catalysis Res Grp, H-6720 Szeged, Hungary

[2] Attila Jozsef Univ, Dept Organ Chem, H-6720 Szeged, Hungary

[3] Albert Szent Gyorgyi Med Univ, Dept Biochem, H-6701 Szeged, Hungary

来源：

APPLIED CATALYSIS A-GENERAL | 1998年 / 172卷 / 02期

基金：

匈牙利科学研究基金会;

关键词：

ultrasounds; hydrogenation; cinnamaldehyde; transmission electron microscopy; particle size morphology;

D O I：

10.1016/S0926-860X(98)00132-X

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 effect of ultrasounds on the platinum-catalyzed hydrogenation of cinnamaldehyde was studied in the liquid phase over Pt/SiO(2), Pt/Al(2)O(3), Pt/C and EuroPt-1 catalysts under mild experimental conditions (333 K, 1 atm H(2)). The sonochemical pretreatment was found to be highly beneficial for the selective formation of cinnamyl alcohol (up to 80%) over silica-supported catalysts, besides the significant reaction rate increase (two-fold increase). The actual changes of the catalysts were studied by transmission electron microscopy, and the mechanistic interpretation of the sonochemical effect is also given. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：225 / 232

页数：8

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