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Hydrogenation of sunflower oil on Pd catalysts in supercritical conditions: Effect of the particle size

Paper ID Volume ID Publish Year Pages File Format Full-Text
52995 46895 2006 4 PDF Available
Title
Hydrogenation of sunflower oil on Pd catalysts in supercritical conditions: Effect of the particle size
Abstract

The sunflower oil hydrogenation at conventional conditions is insensitive to the catalyst surface morphology, mostly because the reaction is diffusion controlled. The addition of a supercritical solvent permits the hydrogenation reaction to occur in a homogeneous phase in contact with the solid catalyst.Activity and selectivity were analyzed using supercritical propane and γ-Al2O3 supported Pd catalysts with different particle size. No significant variations were observed in the reaction rate. On the other hand, cis-isomers selectivity and the production of saturated compound were favored in the case of the smallest metallic particle size (<2 nm).Despite that during the reaction there occurred a phase separation, propane was in supercritical state in both phases. Thus, the advantages mentioned regarding mass transfer could still be observed.

Keywords
Hydrogenation; Supercritical propane; Sunflower oil; Palladium
First Page Preview
Hydrogenation of sunflower oil on Pd catalysts in supercritical conditions: Effect of the particle size
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 6, June 2006, Pages 344–347
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis