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Licensed Unlicensed Requires Authentication Published by De Gruyter February 1, 2007

Kinetics of extraction of coal-tar pitch components with supercritical carbon dioxide

  • S. Marković EMAIL logo , Z. Marković , R. McCrindle and B. Simonović
From the journal Chemical Papers

Abstract

The extraction of a coal-tar pitch with supercritical carbon dioxide was performed under optimal pressure, flow rate, and three different constant temperatures. The extraction kinetics was examined for each temperature and it was surprisingly found that the extraction rate of most components was governed by the first-order kinetics. It was assumed that this deviation from typical models of supercritical fluid extraction kinetics was caused by high pitch concentrations and low solubilities of the components.

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Published Online: 2007-2-1
Published in Print: 2007-2-1

© 2007 Institute of Chemistry, Slovak Academy of Sciences

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