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

György Szöllösi, Béla Török, Gerda Szakonyi, István Kun, Mihály Bartók

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Abstract

The effect of ultrasounds on the platinum-catalyzed hydrogenation of cinnamaldehyde 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 H2). 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.

Original languageEnglish
Pages (from-to)225-232
Number of pages8
JournalApplied Catalysis A: General
Volume172
Issue number2
DOIs
Publication statusPublished - Sep 14 1998

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Keywords

  • Cinnamaldehyde
  • Hydrogenation
  • Particle size morphology
  • Transmission electron microscopy
  • Ultrasounds

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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