ULTRASONIC IRRADIATION AS ACTIVITY AND SELECTIVITY IMPROVING FACTOR IN THE HYDROGENATION OF CINNAMALDEHYDE OVER PT SIO2 CATALYSTS/

Authors
SZOLLOSI G TOROK B SZAKONYI G KUN I BARTOK M
Citation
G. Szollosi et al., ULTRASONIC IRRADIATION AS ACTIVITY AND SELECTIVITY IMPROVING FACTOR IN THE HYDROGENATION OF CINNAMALDEHYDE OVER PT SIO2 CATALYSTS/, Applied catalysis. A, General, 172(2), 1998, pp. 225-232
Citations number
41
Categorie Soggetti
Chemistry Physical","Environmental Sciences
Journal title
Applied catalysis. A, General → ACNP
ISSN journal
0926860X
Volume
172
Issue
2
Year of publication
1998
Pages
225 - 232
Database
ISI
SICI code
0926-860X(1998)172:2<225:UIAAAS>2.0.ZU;2-O
Abstract
The effect of ultrasounds on the platinum-catalyzed hydrogenation of c innamaldehyde was studied in the liquid phase over Pt/SiO2, Pt/Al2O3, Pt/C and EuroPt-1 catalysts under mild experimental conditions (333 K, 1 atm H-2). The sonochemical pretreatment was found to be highly bene ficial for the selective formation of cinnamyl alcohol (up to 80%) ove r silica-supported catalysts, besides the significant reaction rate in crease (two-fold increase). The actual changes of the catalysts were s tudied by transmission electron microscopy, and the mechanistic interp retation of the sonochemical effect is also given. (C) 1998 Elsevier S cience B.V. All rights reserved.