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Type: Artigo de periódico
Title: Methane and carbon dioxide solubility in 1,2-propylene glycol at temperatures ranging from 303 to 423 K and pressures up to 12 MPa
Author: Galvao, AC
Francesconi, AZ
Abstract: This work reports solubility data of methane and carbon dioxide in 1,2-propylene glycol and the Henry's law constant of each solute in the studied solvent at saturation pressure. The measurements were performed at 303, 323, 373, 398 and 423.15 K and pressures up to 4.5 MPa for carbon dioxide solubility and pressures up to 12.1 MPa for methane solubility. The experiments were performed in an autoclave type phase equilibrium apparatus using the total pressure method (synthetic method). All investigated systems show an increase of gas-solubility with the increase of pressure. A decrease of carbon dioxide solubility with the increase of temperature and an increase of methane solubility with the increase of temperature was observed. From the variation of solubility with temperature, partial molar enthalpy and entropy change of the solute for each mixture were calculated. (C) 2009 Elsevier B.V. All rights reserved.
Subject: Gas solubility
Henry's constant
Carbon dioxide
1,2-Propylene glycol
Country: Holanda
Editor: Elsevier Science Bv
Citation: Fluid Phase Equilibria. Elsevier Science Bv, v. 289, n. 2, n. 185, n. 190, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.fluid.2009.12.006
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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