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Achievement of a homogeneous phase in ternary ionic liquid/carbon dioxide/organic systems / Maaike C. Kroon in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3474–3478 Titre : Achievement of a homogeneous phase in ternary ionic liquid/carbon dioxide/organic systems Type de document : texte imprimé Auteurs : Maaike C. Kroon, Auteur ; Louw J. Florusse, Auteur ; Eliane Kühne, Auteur Année de publication : 2010 Article en page(s) : pp. 3474–3478 Note générale : Industrial Chemstry Langues : Anglais (eng) Mots-clés : Homogeneous  Ternary  Ionic  Liquid  Carbon  Dioxide  Organic Résumé : A few years ago, it was found that carbon dioxide (CO2) is able to induce in ternary ionic liquid (IL) + organic systems, a “two-phase (L + V)−three-phase (L1 + L2 + V)−two-phase (L1 + L2)” transition by pressure increase. In the two liquid phase region (L1 + L2), one of the phases did not contain any IL. Therefore, the organic compound could be separated from the IL at increased CO2 pressure without any IL contamination. However, the occurrence of a homogeneous phase by further pressure increase, a so-called L1 + L2 → L transition, in the same systems was never observed before. Here, we demonstrate that in addition a third phase transition is possible upon further CO2 pressure increase, where the two liquid phases (L1 + L2) can be forced to form one homogeneous liquid phase (L). This phenomenon has promising implications for reactions and separations in systems using ILs. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901405p [article] Achievement of a homogeneous phase in ternary ionic liquid/carbon dioxide/organic systems [texte imprimé] / Maaike C. Kroon, Auteur ; Louw J. Florusse, Auteur ; Eliane Kühne, Auteur . - 2010 . - pp. 3474–3478. Industrial Chemstry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3474–3478 Mots-clés : Homogeneous  Ternary  Ionic  Liquid  Carbon  Dioxide  Organic Résumé : A few years ago, it was found that carbon dioxide (CO2) is able to induce in ternary ionic liquid (IL) + organic systems, a “two-phase (L + V)−three-phase (L1 + L2 + V)−two-phase (L1 + L2)” transition by pressure increase. In the two liquid phase region (L1 + L2), one of the phases did not contain any IL. Therefore, the organic compound could be separated from the IL at increased CO2 pressure without any IL contamination. However, the occurrence of a homogeneous phase by further pressure increase, a so-called L1 + L2 → L transition, in the same systems was never observed before. Here, we demonstrate that in addition a third phase transition is possible upon further CO2 pressure increase, where the two liquid phases (L1 + L2) can be forced to form one homogeneous liquid phase (L). This phenomenon has promising implications for reactions and separations in systems using ILs. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901405p

Solubility of methane in the ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate / Mamoun Althuluth in Industrial & engineering chemistry research, Vol. 51 N° 51 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 16709–16712 Titre : Solubility of methane in the ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate Type de document : texte imprimé Auteurs : Mamoun Althuluth, Auteur ; Maaike C. Kroon, Auteur ; Cor J. Peters, Auteur Année de publication : 2012 Article en page(s) : pp. 16709–16712 Note générale : Industrial chgemistry Langues : Anglais (eng) Mots-clés : Ionic  liquid  Methane Résumé : Previously, we found that the ionic liquid (IL) 1-ethyl-3 methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows the highest carbon dioxide (CO2) solubility of all ILs studied so far. Therefore, this IL is a very interesting solvent for gas separations, such as the removal of CO2 from sour gas, as long as the solubility of methane (CH4) in the same IL is sufficiently low. In this work, we present new experimental measurements of the CH4 solubility in [emim][FAP]. This solubility has been determined by measuring the bubble point pressures for CH4 concentrations ranging from (5.2 to 15.5) mol % and within a temperature range of (293.30 to 363.42 K) using a synthetic method. The solubilities of CH4 in [emim][FAP] are compared to the CH4 solubilities in other ILs. This comparison shows that the solubility of CH4 in the various ILs slightly decreases in the order: [hmim][Tf2N] > [emim][FAP] > [bmim][Tf2N]. The solubilities of CH4 in various ILs are compared with CO2 solubilities in the same ILs, showing the much lower solubility of CH4 in all ILs studied. The high solubility of CO2 compared to CH4 in [emim][FAP] indicates the possibility of using this IL in separating CO2 from natural gas. The obtained selectivity for this separation at a temperature of 333.15 K is S = HCH4/HCO2 = 7.74, which is similar to CO2/CH4 separation ratios in other ILs (e.g., S = 8.26 for [bmim][Tf2N] and S = 6.10 for [hmim][Tf2N]). ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302472t [article] Solubility of methane in the ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [texte imprimé] / Mamoun Althuluth, Auteur ; Maaike C. Kroon, Auteur ; Cor J. Peters, Auteur . - 2012 . - pp. 16709–16712. Industrial chgemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 16709–16712 Mots-clés : Ionic  liquid  Methane Résumé : Previously, we found that the ionic liquid (IL) 1-ethyl-3 methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows the highest carbon dioxide (CO2) solubility of all ILs studied so far. Therefore, this IL is a very interesting solvent for gas separations, such as the removal of CO2 from sour gas, as long as the solubility of methane (CH4) in the same IL is sufficiently low. In this work, we present new experimental measurements of the CH4 solubility in [emim][FAP]. This solubility has been determined by measuring the bubble point pressures for CH4 concentrations ranging from (5.2 to 15.5) mol % and within a temperature range of (293.30 to 363.42 K) using a synthetic method. The solubilities of CH4 in [emim][FAP] are compared to the CH4 solubilities in other ILs. This comparison shows that the solubility of CH4 in the various ILs slightly decreases in the order: [hmim][Tf2N] > [emim][FAP] > [bmim][Tf2N]. The solubilities of CH4 in various ILs are compared with CO2 solubilities in the same ILs, showing the much lower solubility of CH4 in all ILs studied. The high solubility of CO2 compared to CH4 in [emim][FAP] indicates the possibility of using this IL in separating CO2 from natural gas. The obtained selectivity for this separation at a temperature of 333.15 K is S = HCH4/HCO2 = 7.74, which is similar to CO2/CH4 separation ratios in other ILs (e.g., S = 8.26 for [bmim][Tf2N] and S = 6.10 for [hmim][Tf2N]). ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302472t

Toward a sustainable chemical industry / Maaike C. Kroon ; Dap Hartmann in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p.8517–8525 Titre : Toward a sustainable chemical industry : cyclic innovation applied to ionic liquid-based technology Type de document : texte imprimé Auteurs : Maaike C. Kroon, Auteur ; Dap Hartmann, Auteur Année de publication : 2008 Article en page(s) : p.8517–8525 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Chemical  Industry En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800370t [article] Toward a sustainable chemical industry : cyclic innovation applied to ionic liquid-based technology [texte imprimé] / Maaike C. Kroon, Auteur ; Dap Hartmann, Auteur . - 2008 . - p.8517–8525. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p.8517–8525 Mots-clés : Chemical  Industry En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800370t