Solubility of trioctylmethylammonium chloride in supercritical carbon dioxide and the influence of co-solvents on the solubility behavior

Pitchaiah, K C and Lamba, Neha and Sivaraman, N and Madras, Giridhar (2018) Solubility of trioctylmethylammonium chloride in supercritical carbon dioxide and the influence of co-solvents on the solubility behavior. In: JOURNAL OF SUPERCRITICAL FLUIDS, 138 . pp. 102-114.

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Abstract

Solubility of trioctylmethylammonium chloride (TOMAC) in supercritical carbon dioxide (SCCO2) was measured at 313, 323 and 333 K with pressure ranging from 10 to 30 MPa. Solubilities (in mole fraction) ranged from 0.5 x 10(-5) to 12.7 x 10(-5) in the investigated region. Influence of co-solvents on the solubility of TOMAC was studied at 313 and 323 K. Among the four models employed for correlating solubility of TOMAC in neat SCCO2, association theory based on van Laar activity coefficient model resulted in average deviation of 2%, while use of other models resulted within 10%. Solubility data were found to be self-consistent based on the Mendez-Teja model. Two new models were developed for the ternary system (SCCO2 + co-solvent + liquid solute) based upon association theory along with the Wilson and van Laar activity coefficient models. These models successfully correlated solubility of TOMAC in SCCO2 + co-solvent with an average deviation of < 8%.

Item Type:	Journal Article
Publication:	JOURNAL OF SUPERCRITICAL FLUIDS
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Additional Information:	Copy right of this article belong to ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	02 Jul 2018 16:04
Last Modified:	02 Jul 2018 16:04
URI:	http://eprints.iisc.ac.in/id/eprint/60107

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