Solubilities of resorcinol and pyrocatechol and their mixture in supercritical carbon dioxide

Reddy, Sivamohan N and Madras, Giridhar (2011) Solubilities of resorcinol and pyrocatechol and their mixture in supercritical carbon dioxide. In: Thermochimica Acta, 521 (1-2). pp. 41-48.

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Abstract

The equilibrium solubilities of dihydroxy benzene isomers (resorcinol and pyrocatechol) and its mixture were experimentally determined at different temperatures (308, 318, 328, and 338 K) in the pressure range of 9.8-16.2 MPa. In the ternary system, the solubilities of pyrocatechol increased while the solubilities of resorcinol decreased relative to their binary solubilities. A new association model was developed based on the concept of formation of solvate complex molecules to correlate the solubility of the solid for mixed solids in supercritical carbon dioxide (SCCO(2)). The model equation relates the solubility of solute in terms of the cosolute composition, temperature, pressure and density of SCCO(2). The proposed model correlated the solubilities of sixteen solid systems taken from the literature and current experimental data with an average absolute relative deviation (AARD) of around 4%. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Thermochimica Acta
Publisher:	Elsevier Science B.V.
Additional Information:	Copyright of this article belongs to Elsevier Science B.V.
Keywords:	Dihydroxy benzene isomers;Mixed solids;Cosolute;Solvate complex;Association model
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	04 Aug 2011 10:55
Last Modified:	04 Aug 2011 10:55
URI:	http://eprints.iisc.ac.in/id/eprint/39737

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