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Inert - gas - stripping method for measuring solubilities of sparingly soluble gases in liquids. solubilities of some gases in protic ionic liquid 1 - Butyl, 3 - hydrogen - imidazolium acetate / Waheed Afzal in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4433-4439 Titre : Inert - gas - stripping method for measuring solubilities of sparingly soluble gases in liquids. solubilities of some gases in protic ionic liquid 1 - Butyl, 3 - hydrogen - imidazolium acetate Type de document : texte imprimé Auteurs : Waheed Afzal, Auteur ; Brian Yoo, Auteur ; John M. Prausnitz, Auteur Année de publication : 2012 Article en page(s) : pp. 4433-4439 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Ionic  liquid  Solubility  Stripping  Inert  gas Résumé : The inert-gas stripping method is useful for rapidly measuring solubilities of moderately and sparingly soluble gases in liquids. Earlier versions of this method can give only solubilities of volatile-liquid solutes in low-volatile solvents. However, the modifications presented here enable measurement of very low solubilities of gases in liquids. Henry's constants are reported for carbon dioxide, krypton, oxygen, air, and nitrogen in n-dodecane and n-pentadecane, and for carbon dioxide in ethylene glycol at near-ambient conditions. The new Henry's constants compare well with those in the literature. Henry's constants are reported for carbon dioxide, ethane, ethylene, krypton, oxygen, air, and nitrogen at near-ambient conditions in the protic ionic liquid 1-butyl, 3-hydrogen-imidazolium acetate; we select this protic ionic liquid because, relative to other ionic liquids, it has low viscosity and because solubility data in protic ionic liquids are rare. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655651 [article] Inert - gas - stripping method for measuring solubilities of sparingly soluble gases in liquids. solubilities of some gases in protic ionic liquid 1 - Butyl, 3 - hydrogen - imidazolium acetate [texte imprimé] / Waheed Afzal, Auteur ; Brian Yoo, Auteur ; John M. Prausnitz, Auteur . - 2012 . - pp. 4433-4439. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4433-4439 Mots-clés : Ionic  liquid  Solubility  Stripping  Inert  gas Résumé : The inert-gas stripping method is useful for rapidly measuring solubilities of moderately and sparingly soluble gases in liquids. Earlier versions of this method can give only solubilities of volatile-liquid solutes in low-volatile solvents. However, the modifications presented here enable measurement of very low solubilities of gases in liquids. Henry's constants are reported for carbon dioxide, krypton, oxygen, air, and nitrogen in n-dodecane and n-pentadecane, and for carbon dioxide in ethylene glycol at near-ambient conditions. The new Henry's constants compare well with those in the literature. Henry's constants are reported for carbon dioxide, ethane, ethylene, krypton, oxygen, air, and nitrogen at near-ambient conditions in the protic ionic liquid 1-butyl, 3-hydrogen-imidazolium acetate; we select this protic ionic liquid because, relative to other ionic liquids, it has low viscosity and because solubility data in protic ionic liquids are rare. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655651

Phase equilibria of mixtures containing glycol and n-alkane / Waheed Afzal in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 11202–11210 Titre : Phase equilibria of mixtures containing glycol and n-alkane : experimental study of infinite dilution activity coefficients and modeling using the cubic-plus-association equation of state Type de document : texte imprimé Auteurs : Waheed Afzal, Auteur ; Martin P. Breil, Auteur ; Pascal Théveneau, Auteur Année de publication : 2010 Article en page(s) : pp. 11202–11210 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Phase--Equilibria--Mixtures--Containing--Glycol--n-Alkane--Experimental--Infinite--Dilution  Activity--Coefficients--Modeling  Using--Cubic-Plus-Association--Equation--State Résumé : In this work, we report the infinite dilution activity coefficients for four n-alkanes (n-pentane, n-hexane, n-heptane, and n-octane) in monoethylene glycol in the temperature range from 298 to 334 K and at atmospheric pressure. Experimental data were measured using a previously described inert gas stripping technique. The new experimental data are compared with the literature data whenever possible. The experimental infinite dilution activity coefficients of several alkanes from n-pentane to n-hexadecane in monoethylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol previously reported in the literature, along with the data measured in this work have been modeled using the cubic-plus-association (CPA) equation of state (EoS). Satisfactory results have been obtained using temperature-independent interaction parameters. Useful remarks are presented about the application of infinite dilution activity coefficient data for estimating binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. Furthermore, the variation in the values of the interaction parameters is discussed for different glycol systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900856q [article] Phase equilibria of mixtures containing glycol and n-alkane : experimental study of infinite dilution activity coefficients and modeling using the cubic-plus-association equation of state [texte imprimé] / Waheed Afzal, Auteur ; Martin P. Breil, Auteur ; Pascal Théveneau, Auteur . - 2010 . - pp. 11202–11210. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 11202–11210 Mots-clés : Phase--Equilibria--Mixtures--Containing--Glycol--n-Alkane--Experimental--Infinite--Dilution  Activity--Coefficients--Modeling  Using--Cubic-Plus-Association--Equation--State Résumé : In this work, we report the infinite dilution activity coefficients for four n-alkanes (n-pentane, n-hexane, n-heptane, and n-octane) in monoethylene glycol in the temperature range from 298 to 334 K and at atmospheric pressure. Experimental data were measured using a previously described inert gas stripping technique. The new experimental data are compared with the literature data whenever possible. The experimental infinite dilution activity coefficients of several alkanes from n-pentane to n-hexadecane in monoethylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol previously reported in the literature, along with the data measured in this work have been modeled using the cubic-plus-association (CPA) equation of state (EoS). Satisfactory results have been obtained using temperature-independent interaction parameters. Useful remarks are presented about the application of infinite dilution activity coefficient data for estimating binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. Furthermore, the variation in the values of the interaction parameters is discussed for different glycol systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900856q

Phase equilibria of mixtures containing glycol and n-alkane / Waheed Afzal in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 11202–11210 Titre : Phase equilibria of mixtures containing glycol and n-alkane : experimental study of infinite dilution activity coefficients and modeling using the cubic-plus-association equation of state Type de document : texte imprimé Auteurs : Waheed Afzal, Auteur ; Martin P. Breil, Auteur ; Pascal Théveneau, Auteur Année de publication : 2010 Article en page(s) : pp. 11202–11210 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Infinite  dilution  activity  coefficients  n-alkanes  Cubic-plus-association  equation Résumé : In this work, we report the infinite dilution activity coefficients for four n-alkanes (n-pentane, n-hexane, n-heptane, and n-octane) in monoethylene glycol in the temperature range from 298 to 334 K and at atmospheric pressure. Experimental data were measured using a previously described inert gas stripping technique. The new experimental data are compared with the literature data whenever possible. The experimental infinite dilution activity coefficients of several alkanes from n-pentane to n-hexadecane in monoethylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol previously reported in the literature, along with the data measured in this work have been modeled using the cubic-plus-association (CPA) equation of state (EoS). Satisfactory results have been obtained using temperature-independent interaction parameters. Useful remarks are presented about the application of infinite dilution activity coefficient data for estimating binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. Furthermore, the variation in the values of the interaction parameters is discussed for different glycol systems. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900856q [article] Phase equilibria of mixtures containing glycol and n-alkane : experimental study of infinite dilution activity coefficients and modeling using the cubic-plus-association equation of state [texte imprimé] / Waheed Afzal, Auteur ; Martin P. Breil, Auteur ; Pascal Théveneau, Auteur . - 2010 . - pp. 11202–11210. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 11202–11210 Mots-clés : Infinite  dilution  activity  coefficients  n-alkanes  Cubic-plus-association  equation Résumé : In this work, we report the infinite dilution activity coefficients for four n-alkanes (n-pentane, n-hexane, n-heptane, and n-octane) in monoethylene glycol in the temperature range from 298 to 334 K and at atmospheric pressure. Experimental data were measured using a previously described inert gas stripping technique. The new experimental data are compared with the literature data whenever possible. The experimental infinite dilution activity coefficients of several alkanes from n-pentane to n-hexadecane in monoethylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol previously reported in the literature, along with the data measured in this work have been modeled using the cubic-plus-association (CPA) equation of state (EoS). Satisfactory results have been obtained using temperature-independent interaction parameters. Useful remarks are presented about the application of infinite dilution activity coefficient data for estimating binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. Furthermore, the variation in the values of the interaction parameters is discussed for different glycol systems. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900856q

Solubility Parameters for Nine Ionic Liquids / Brian Yoo in Industrial & engineering chemistry research, Vol. 51 N° 29 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 29 (Juillet 2012) . - pp. 9913–9917 Titre : Solubility Parameters for Nine Ionic Liquids Type de document : texte imprimé Auteurs : Brian Yoo, Auteur ; Waheed Afzal, Auteur ; John M. Prausnitz, Auteur Année de publication : 2012 Article en page(s) : pp. 9913–9917 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ionic  liquids Résumé : Solubility parameters are useful for estimating solubilities of solutes in ionic liquids when no solubility data are available. Solubility parameters are reported for nine ionic liquids; they were obtained from solubility data for a variety of solutes. The ionic liquids are 1-butyl,3-methylimidazolium hydrogen sulfate, 1-ethyl,3-methylimidazolium acetate, 1-methyl,3-trimethylsylilimidazolium chloride, 4-methyl,n-butylpyridinium tetrafluoroborate, ethylammonium nitrate, 1-ethyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-methyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and 1-ethyl,3-methylimidazolium ethylsulfate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300588s [article] Solubility Parameters for Nine Ionic Liquids [texte imprimé] / Brian Yoo, Auteur ; Waheed Afzal, Auteur ; John M. Prausnitz, Auteur . - 2012 . - pp. 9913–9917. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 29 (Juillet 2012) . - pp. 9913–9917 Mots-clés : Ionic  liquids Résumé : Solubility parameters are useful for estimating solubilities of solutes in ionic liquids when no solubility data are available. Solubility parameters are reported for nine ionic liquids; they were obtained from solubility data for a variety of solutes. The ionic liquids are 1-butyl,3-methylimidazolium hydrogen sulfate, 1-ethyl,3-methylimidazolium acetate, 1-methyl,3-trimethylsylilimidazolium chloride, 4-methyl,n-butylpyridinium tetrafluoroborate, ethylammonium nitrate, 1-ethyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-methyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl,3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and 1-ethyl,3-methylimidazolium ethylsulfate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300588s