Gas Solubility

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Richard D. Noble - One of the best experts on this subject based on the ideXlab platform.

  • room temperature ionic liquids temperature dependence of Gas Solubility selectivity
    Industrial & Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs:  1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-componen...

  • Room-temperature ionic liquids: Temperature dependence of Gas Solubility selectivity
    Industrial and Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)- imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-component solubilities) increases as temperature decreases for CO2/N2, CO2/CH4, and CO2/H2 systems. Experimental values for the enthalpy and entropy of solvation are reported.

Jason E Bara - One of the best experts on this subject based on the ideXlab platform.

  • free volume as the basis of Gas Solubility and selectivity in imidazolium based ionic liquids
    Industrial & Engineering Chemistry Research, 2012
    Co-Authors: Matthew S Shannon, Jason M Tedstone, Scott P O Danielsen, Michelle S Hindman, Christopher A Irvin, Jason E Bara
    Abstract:

    While molar volume-based models for Gas Solubility in ionic liquids (ILs) have been proposed, free volume within the IL can be shown to be the underlying property driving Gas Solubility and selecitivity. Previously published observations as to the distinct differences in Solubility trends for Gases such as CH4 and N2 relative to CO2 in systematically varied ILs can be attributed to positive and negative effects arising from increasing free volume with increasing alkyl chain length. Through the use of COSMOtherm as a powerful and rapid tool to calculate free volumes in 165 existing and theoretical 1-n-alkyl-3-methylimidazolium ([Cnmim][X]) ILs, a previously unreported, yet speculated, critical underlying relationship between Gas Solubility in ILs is herein described. These results build upon previous assertions that Regular Solution Theory is applicable to imidazolium-based ILs, which appeared to indicate that a global maximum had already been observed for CO2 Solubility in imidazolium-based ILs. However, ...

  • room temperature ionic liquids temperature dependence of Gas Solubility selectivity
    Industrial & Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs:  1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-componen...

  • Room-temperature ionic liquids: Temperature dependence of Gas Solubility selectivity
    Industrial and Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)- imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-component solubilities) increases as temperature decreases for CO2/N2, CO2/CH4, and CO2/H2 systems. Experimental values for the enthalpy and entropy of solvation are reported.

Alexia Finotello - One of the best experts on this subject based on the ideXlab platform.

  • room temperature ionic liquids temperature dependence of Gas Solubility selectivity
    Industrial & Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs:  1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-componen...

  • Room-temperature ionic liquids: Temperature dependence of Gas Solubility selectivity
    Industrial and Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)- imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-component solubilities) increases as temperature decreases for CO2/N2, CO2/CH4, and CO2/H2 systems. Experimental values for the enthalpy and entropy of solvation are reported.

Arturo Trejo - One of the best experts on this subject based on the ideXlab platform.

  • Gas Solubility of h2s in aqueous solutions of n methyldiethanolamine and diethanolamine with 2 amino 2 methyl 1 propanol at 313 343 and 393 k in the range 2 5 1036 kpa
    Fluid Phase Equilibria, 2004
    Co-Authors: Maria Esther Rebolledolibreros, Arturo Trejo
    Abstract:

    Abstract The Gas Solubility of hydrogen sulfide in aqueous solutions of 32.5 wt.% N -methyldiethanolamine (MDEA) and 12.5 wt.% diethanolamine with 4, 6, and 10 wt.% 2-amino-2-methyl-1-propanol, at 313.15, 343.15, and 393.15 K, has been measured, using a volumetric method for the analysis of the liquid phase, over a range of pressure from 2.5 to 1036 kPa. The experimental results of the Gas Solubility are given as the partial pressure of H 2 S against its mole ratio α (mol H 2 S/mol total alkanolamine) and mole fraction of H 2 S at each temperature studied. Enthalpies of solution of H 2 S have been derived from the pressure-temperature concentration data. Experimental Solubility data obtained in our laboratory for H 2 S and CO 2 are compared, and it is possible to establish that the aqueous solutions of MDEA, DEA, and AMP studied in this work are highly selective towards H 2 S under the same conditions of pressure and temperature.

  • Gas Solubility of co2 in aqueous solutions of n methyldiethanolamine and diethanolamine with 2 amino 2 methyl 1 propanol
    Fluid Phase Equilibria, 2004
    Co-Authors: Maria Esther Rebolledolibreros, Arturo Trejo
    Abstract:

    Gas Solubility of carbon dioxide in an aqueous solution of 32.5 wt.% N-methyldiethanolamine and 12.5 wt.% diethanolamine with 4, 6, and 10 wt.% 2-amino-2-methyl-1-propanol has been measured, at 313.15, 343.15, and 393.15 K, over a range of pressure from 3 to 2000 kPa, using a chromatographic method for analysis of the liquid phase. The results of the Gas Solubility are given as the partial pressure of CO 2 against its mole ratio α (mol CO2/mol alkanolamine) and its mole fraction at each temperature studied. The Solubility of CO 2 in all the systems studied decreases with an increase in temperature and increases with an increase in the partial pressure of CO 2 at a given temperature and it is a function of the concentration of the mixture of alkanolamines in solution. The enthalpy of solution of CO 2 has been calculated from the experimental Solubility data. © 2004 Elsevier B.V. All rights reserved.

  • Gas Solubility of hydrogen sulfide and carbon dioxide in mixtures of sulfolane with diethanolamine at different temperatures
    Fluid Phase Equilibria, 1994
    Co-Authors: Florentino Murrieta-guevara, Esther Rebolledo-libreros, Arturo Trejo
    Abstract:

    Abstract Murrieta-Guevara, F., Rebolledo-Libreros, E. and Trejo, A., 1994. Gas Solubility of hydrogen sulfide and carbon dioxide in mixtures of sulfolane with diethanolamine at different temperatures. Fluid Phase Equilibria , 95: 163-174. Experimental equilibrium Solubility data are reported for hydrogen sulfide in mixtures of tetramethylene sulfone (sulfolane) with 15, 30 and 50wt.% diethanolamine, and for carbon dioxide in a mixture of sulfolane with 50 wt.% diethanolamine in the temperature range 303.15–373.15 K from 15 up to 2296 kPa of solute partial pressure. The results of the Gas Solubility measurements are presented as a partial pressure of the solute against its mole fraction in the solvent mixture, and also against its mole ratio with respect to diethanolamine. For a given temperature, the Solubility of either solute increases as the pressure increases. The Solubility of the hydrogen sulfide increases as the concentration of diethanolamine increases. Exothermic values of the enthalpy of solution for hydrogen sulfide and carbon dioxide were obtained from Solubility data.

  • Gas Solubility of carbon dioxide and hydrogen sulfide in mixtures of sulfolane with monoethanolamine
    Fluid Phase Equilibria, 1993
    Co-Authors: Florentino Murrieta-guevara, Esther Rebolledo-libreros, Arturo Trejo
    Abstract:

    Murrieta-Guevara, F., Rebolledo-Libreros, E. and Trejo, A., 1993. Gas Solubility of carbon dioxide and hydrogen sulfide in mixtures of sulfolane with monoethanolamine. Fluid Phase Equilibria, 86: 225-231 The equilibrium Solubility of carbon dioxide and hydrogen sulfide in mixtures of tetra-methylene sulfone (sulfolane) with 15 and 30wt.% monoethanolamine was determined experimentally in the temperature range 303.15–373.15 K from 2 to 2210 kPa of partial pressure. The results of the Gas Solubility measurements are presented as partial pressure of the solute against its mole fraction in the solvent. Values of the enthalpy of solution for carbon dioxide and hydrogen sulfide were derived from the Solubility data.

Dean Camper - One of the best experts on this subject based on the ideXlab platform.

  • room temperature ionic liquids temperature dependence of Gas Solubility selectivity
    Industrial & Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs:  1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-componen...

  • Room-temperature ionic liquids: Temperature dependence of Gas Solubility selectivity
    Industrial and Engineering Chemistry Research, 2008
    Co-Authors: Alexia Finotello, Dean Camper, Jason E Bara, Richard D. Noble
    Abstract:

    This study focuses on bulk fluid Solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) Gases in the imidazolium-based RTILs: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)- imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the Gases. Results show that, as temperature increases, the Solubility of CO2 decreases in all RTILs, the Solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the Solubility of N2 and H2 increases. Also, the ideal Solubility selectivity (ratio of pure-component solubilities) increases as temperature decreases for CO2/N2, CO2/CH4, and CO2/H2 systems. Experimental values for the enthalpy and entropy of solvation are reported.

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