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Kinetics of linoleic acid hydrogenation on Pd/C catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
42939 45948 2009 15 PDF Available
Title
Kinetics of linoleic acid hydrogenation on Pd/C catalyst
Abstract

The hydrogenation of linoleic acid was investigated in semi-batch slurry reactors over 5 wt% palladium on carbon (Pd/C) catalyst in temperature and H2 pressure ranges of 40–100 °C and 0.5–20 bar using n-decane as a solvent. The reaction network involves hydrogenation of linoleic acid to monoenoic acid isomers, predominantly oleic acid, and further hydrogenation of monoenoic acids to stearic acid. The reaction kinetics was established in conditions free from diffusional limitations. The rate was temperature and pressure dependent. A reaction network and mechanisms were proposed and corresponding kinetic equations were derived. The parameters of the mechanistic kinetic models were determined by using non-linear regression analysis. The concentrations of linoleic acid, monoenoic acids, and stearic acid were used in parameter estimation. Data fitting allowed discrimination between rival mechanistic models, more specifically the influence of the hydrogen addition. The kinetic models described the formation of the products with satisfying accuracy.

Graphical abstractThe hydrogenation of linoleic acid was investigated in semi-batch slurry reactors over 5 wt% palladium on carbon (Pd/C) catalyst in temperature and H2 pressure ranges of 40–100 °C and 0.5–20 bar using n-decane as a solvent. A reaction network and mechanisms were proposed and corresponding kinetic equations were derived. The parameters of the mechanistic kinetic models were determined by using non-linear regression analysis.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Palladium catalyst; Hydrogenation; Linoleic acid; Mathematical modeling
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Kinetics of linoleic acid hydrogenation on Pd/C catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 353, Issue 2, 1 February 2009, Pages 166–180
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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