Measurement and correlation of quaternary solubilities of dihydroxybenzene isomers in supercritical carbon dioxide

Reddy, Sivamohan N and Madras, Giridhar (2013) Measurement and correlation of quaternary solubilities of dihydroxybenzene isomers in supercritical carbon dioxide. In: JOURNAL OF SUPERCRITICAL FLUIDS, 73 . pp. 63-69.

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Abstract

The equilibrium quaternary solubilities of dihydroxybenzene (resorcinol + pyrocatechol + hydroquinone + SCCO2) isomers were experimentally determined at 308, 318 and 328K over a pressure range of 9.8-15.7 MPa by using a saturation method. The effects of temperature, pressure and the components on each other have been thoroughly investigated. The selectivity of SCCO2 for ternary (resorcinol + pyrocatechol + SCCO2) and quaternary systems was discussed. A new model equation for quaternary solubilities of solids has been developed by accounting for non-idealities by combining the solution model with Wilson activity coefficient model. The model equation has five adjustable parameters and correlates the quaternary solubilities of current data along with two other quaternary data reported in the literature. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF SUPERCRITICAL FLUIDS
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copyright for this article belongs to ELSEVIER SCIENCE BV, NETHERLANDS
Keywords:	Quaternary solubilities;Dihydroxybenzene isomers;Ternary systems;Wilson activity coefficient model
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	06 Mar 2013 11:04
Last Modified:	06 Mar 2013 11:04
URI:	http://eprints.iisc.ac.in/id/eprint/45959

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