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Modeling of kinetics and stereoselectivity in liquid-phase α-pinene hydrogenation over Pd/C

Paper ID Volume ID Publish Year Pages File Format Full-Text
42551 45930 2009 9 PDF Available
Title
Modeling of kinetics and stereoselectivity in liquid-phase α-pinene hydrogenation over Pd/C
Abstract

The hydrogenation of α-pinene was investigated in a batch reactor over 4 wt% palladium on carbon (Pd/C) catalyst in temperature range of 50–90 °C and 2–11 bar of hydrogen pressure using n-octane as a solvent. The reaction network involves hydrogenation of α-pinene to two stereoisomers. The reaction kinetics was established in conditions free from diffusional limitations. The rate was temperature, pressure and reactant concentration dependent. Stereoselectivity was independent on conversion, but was sensitive to temperature and hydrogen pressure. 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 kinetic models described the formation of the products with satisfying accuracy.

Graphical abstractThe kinetics and stereoselectivity of α-pinene hydrogenation to two stereoisomers were investigated over 4 wt% Pd/C at 50–90 °C and 2–11 bar of hydrogen pressure using n-octane as a solvent. The rate was temperature, pressure and reactant concentration dependent. Stereoselectivity was independent on conversion, but was sensitive to temperature and hydrogen pressure. Advanced kinetic model described the formation of the products with satisfying accuracy.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Pinene; Hydrogenation; Kinetics; Modeling; Pd/C
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Modeling of kinetics and stereoselectivity in liquid-phase α-pinene hydrogenation over Pd/C
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 356, Issue 2, 15 March 2009, Pages 216–224
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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You save - $31
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