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Influence of a single salt (NaCl/Na2SO4) on the solubility of ammonia in liquid mixtures of (water + methanol) / Dirk Schäfer in Industrial & engineering chemistry research, Vol. 47 n°15 (Août 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5112–5118 Titre : Influence of a single salt (NaCl/Na2SO4) on the solubility of ammonia in liquid mixtures of (water + methanol) Type de document : texte imprimé Auteurs : Dirk Schäfer, Auteur ; Mathias Vogt, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur Année de publication : 2008 Article en page(s) : p. 5112–5118 Note générale : Bibliogr. p. 5118 Langues : Anglais (eng) Mots-clés : Single  salts;  Ammonia  --  liquid  mixtures;  Water;  Methanol Résumé : New experimental results are reported for the influence of two single salts (sodium chloride and sodium sulfate) on the solubility of ammonia in liquid mixtures of water and methanol at 353 and 393 K. The mole fractions of methanol in the (gas-free and salt-free) solvent mixture of water and methanol were about 0.25, 0.5, and 0.75 in the experiments with sodium chloride and about 0.05 and 0.25 in the experiments with sodium sulfate. The molality of the salt varied between about 0.25 and 2 (0.15 and 1) mol/kg of the solvent mixture in the systems with sodium chloride (sodium sulfate). The maximum molality of ammonia was about 6.7 mol/kg of (water + methanol) for both temperatures and for both salts. The maximum total pressure above the liquid solutions was about 0.3 MPa (1 MPa) in the system containing sodium chloride at 353 K (393 K) and about 0.2 MPa (0.7 MPa) in the system with sodium sulfate at 353 K (393 K). The experimental results are used to test a thermodynamic framework which allows the influence of both single strong electrolytes on the solubility of ammonia in liquid mixtures of water and methanol to be predicted. The prediction results are in good agreement with the new experimental data. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071169p [article] Influence of a single salt (NaCl/Na2SO4) on the solubility of ammonia in liquid mixtures of (water + methanol) [texte imprimé] / Dirk Schäfer, Auteur ; Mathias Vogt, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur . - 2008 . - p. 5112–5118. Bibliogr. p. 5118 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5112–5118 Mots-clés : Single  salts;  Ammonia  --  liquid  mixtures;  Water;  Methanol Résumé : New experimental results are reported for the influence of two single salts (sodium chloride and sodium sulfate) on the solubility of ammonia in liquid mixtures of water and methanol at 353 and 393 K. The mole fractions of methanol in the (gas-free and salt-free) solvent mixture of water and methanol were about 0.25, 0.5, and 0.75 in the experiments with sodium chloride and about 0.05 and 0.25 in the experiments with sodium sulfate. The molality of the salt varied between about 0.25 and 2 (0.15 and 1) mol/kg of the solvent mixture in the systems with sodium chloride (sodium sulfate). The maximum molality of ammonia was about 6.7 mol/kg of (water + methanol) for both temperatures and for both salts. The maximum total pressure above the liquid solutions was about 0.3 MPa (1 MPa) in the system containing sodium chloride at 353 K (393 K) and about 0.2 MPa (0.7 MPa) in the system with sodium sulfate at 353 K (393 K). The experimental results are used to test a thermodynamic framework which allows the influence of both single strong electrolytes on the solubility of ammonia in liquid mixtures of water and methanol to be predicted. The prediction results are in good agreement with the new experimental data. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071169p

Solubility of CO in H2O+N-methyldiethanolamine +(H2SO4 or Na2SO4) / Rumpf, Bernd in Aiche journal, Vol. 48 N°1 (Janvier 2002) 

Public ISBD [article]  in Aiche journal > Vol. 48 N°1 (Janvier 2002) . - 168-177 p. Titre : Solubility of CO in H2O+N-methyldiethanolamine +(H2SO4 or Na2SO4) Titre original : Solubilité de Co dans H2O+N-Methyldiethanolamine + (H2SO4 ou Nac2So4) Type de document : texte imprimé Auteurs : Rumpf, Bernd, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd ; Anoufrikov, Yuri ; Kuranov, George ; Smirnova, Natalia A. Article en page(s) : 168-177 p. Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Solubilité  Anhybride  carbonique  Solutés  de  sulfate  Methyldiethanolamine  Sulfate  de  sodium  Pressions  Thermodynamique Index. décimale : 660.627.3 Résumé : The solubility of carbon dioxide in aqueous solutions of methyldiethanolamine (MDEA) sulfate (1 m), in aqueous solutions of MDEA and MDEA sulfate (2 m and 1 m, respectively), and in aqueous solutions of MDEA and sodium sulfate (2 m and 1 m, respectively) was measured at 313 K to 413 K and total pressures up to 10.6 MPa. The experimental results were used to extend and test a model for the thermodynamic equilibrium encountered in the solubility of carbon dioxide in such aqueous solutions. La solubilité de l'anhydride carbonique dans les solutés du sulfate du methyldiethanolamine (MDEA) (1 m), dans les solutés du sulfate de MDEA et de MDEA (2 m et 1 m, respectivement), et dans les solutés de MDEA et de sulfate de sodium (2 m et 1 m, respectivement) a été mesurée à 313 K à 413 K et pressions totales jusqu'à MPa 10.6. Les résultats expérimentaux ont été employés pour prolonger et examiner un modèle pour l'équilibre thermo-dynamique produit dans la solubilité de l'anhydride carbonique dans de tels solutés. DEWEY : 660.627.3 ISSN : 0001-1541 RAMEAU : Génie Chimique En ligne : www.aiche.org, aichej@che.udel.edu [article] Solubility of CO in H2O+N-methyldiethanolamine +(H2SO4 or Na2SO4) = Solubilité de Co dans H2O+N-Methyldiethanolamine + (H2SO4 ou Nac2So4) [texte imprimé] / Rumpf, Bernd, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd ; Anoufrikov, Yuri ; Kuranov, George ; Smirnova, Natalia A. . - 168-177 p. Génie Chimique Langues : Anglais (eng) in Aiche journal > Vol. 48 N°1 (Janvier 2002) . - 168-177 p. Mots-clés : Solubilité  Anhybride  carbonique  Solutés  de  sulfate  Methyldiethanolamine  Sulfate  de  sodium  Pressions  Thermodynamique Index. décimale : 660.627.3 Résumé : The solubility of carbon dioxide in aqueous solutions of methyldiethanolamine (MDEA) sulfate (1 m), in aqueous solutions of MDEA and MDEA sulfate (2 m and 1 m, respectively), and in aqueous solutions of MDEA and sodium sulfate (2 m and 1 m, respectively) was measured at 313 K to 413 K and total pressures up to 10.6 MPa. The experimental results were used to extend and test a model for the thermodynamic equilibrium encountered in the solubility of carbon dioxide in such aqueous solutions. La solubilité de l'anhydride carbonique dans les solutés du sulfate du methyldiethanolamine (MDEA) (1 m), dans les solutés du sulfate de MDEA et de MDEA (2 m et 1 m, respectivement), et dans les solutés de MDEA et de sulfate de sodium (2 m et 1 m, respectivement) a été mesurée à 313 K à 413 K et pressions totales jusqu'à MPa 10.6. Les résultats expérimentaux ont été employés pour prolonger et examiner un modèle pour l'équilibre thermo-dynamique produit dans la solubilité de l'anhydride carbonique dans de tels solutés. DEWEY : 660.627.3 ISSN : 0001-1541 RAMEAU : Génie Chimique En ligne : www.aiche.org, aichej@che.udel.edu

Solubility of CO2 in aqueous solutions of methionine and in aqueous solutions of (K2CO3 and methionine) / Jacek Kumełan in Industrial & engineering chemistry research, Vol. 49 N° 8 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3910–3918 Titre : Solubility of CO2 in aqueous solutions of methionine and in aqueous solutions of (K2CO3 and methionine) Type de document : texte imprimé Auteurs : Jacek Kumełan, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur Année de publication : 2010 Article en page(s) : pp. 3910–3918 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Aqueous  Solutions  Methionine  Methionine  Aqueous  Solutions Résumé : The influence of the amino acid d,l-methionine on the solubility of carbon dioxide in pure water and in aqueous solutions of potassium carbonate was investigated. The solubility was measured with a high-pressure view-cell technique operating on the synthetic method. Temperature and total pressure ranged from about 353 to 393 K and 1 to 10 MPa, respectively. The molality of methionine was between about 0.42 mol·(kg H2O)−1 and 0.83 mol·(kg H2O)−1. The molality of potassium carbonate was about 1.25 and 2.5 mol·(kg H2O)−1. The solubility of carbon dioxide in aqueous solutions of potassium carbonate and methionine is influenced by chemical reactions: On one side, dissolving carbon dioxide in an aqueous solution of potassium carbonate shifts the chemical reaction equilibrium from carbonate to bicarbonate and, on the other side, methionine is a zwitterionic substance. The new experimental results are correlated using an extension of a previously published thermodynamic model for the solubility of carbon dioxide in aqueous solutions of potassium carbonate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie902032n [article] Solubility of CO2 in aqueous solutions of methionine and in aqueous solutions of (K2CO3 and methionine) [texte imprimé] / Jacek Kumełan, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur . - 2010 . - pp. 3910–3918. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3910–3918 Mots-clés : Aqueous  Solutions  Methionine  Methionine  Aqueous  Solutions Résumé : The influence of the amino acid d,l-methionine on the solubility of carbon dioxide in pure water and in aqueous solutions of potassium carbonate was investigated. The solubility was measured with a high-pressure view-cell technique operating on the synthetic method. Temperature and total pressure ranged from about 353 to 393 K and 1 to 10 MPa, respectively. The molality of methionine was between about 0.42 mol·(kg H2O)−1 and 0.83 mol·(kg H2O)−1. The molality of potassium carbonate was about 1.25 and 2.5 mol·(kg H2O)−1. The solubility of carbon dioxide in aqueous solutions of potassium carbonate and methionine is influenced by chemical reactions: On one side, dissolving carbon dioxide in an aqueous solution of potassium carbonate shifts the chemical reaction equilibrium from carbonate to bicarbonate and, on the other side, methionine is a zwitterionic substance. The new experimental results are correlated using an extension of a previously published thermodynamic model for the solubility of carbon dioxide in aqueous solutions of potassium carbonate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie902032n

Solubility of CO2 in (water + acetone) / Ilina Urukova in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4553–4564 Titre : Solubility of CO2 in (water + acetone) : correlation of experimental data and predictions from molecular simulation Type de document : texte imprimé Auteurs : Ilina Urukova, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur Année de publication : 2009 Article en page(s) : pp. 4553–4564 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : CO2--solubility  Aqueous  solutions  Acetone  Gibbs  ensemble  Monte  Carlo  method Résumé : The correlation and prediction of the solubility of gases in (nonelectrolyte as well as in electrolyte) aqueous/organic solvent mixtures is an important topic in many areas of chemical engineering. Despite the importance of that field, comparatively little attention has been given to that area in both classical thermodynamics (i.e., correlation methods that are based on semiempirical expressions for the excess Gibbs energy) and molecular simulation (where gas solubility can be predicted from intermolecular pair potentials). In the work presented here, recently published experimental data for the solubility of carbon dioxide in aqueous solutions of acetone (covering temperatures from 313 to 395 K at pressures ranging up to about 9 MPa) are used for testing a semiempirical, classical method (for the correlation of such gas solubility phenomena) as well as the Gibbs ensemble Monte Carlo method (GEMC) (for predicting the solubility of carbon dioxide in aqueous solutions of acetone from published intermolecular pair potentials without using any adjustable binary interaction parameter). The correlation method reproduces the experimental data (nearly) within experimental uncertainty, as was expected. The predictions by the GEMC method also agree well with the experimental data. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801015u [article] Solubility of CO2 in (water + acetone) : correlation of experimental data and predictions from molecular simulation [texte imprimé] / Ilina Urukova, Auteur ; Álvaro Pérez-Salado Kamps, Auteur ; Maurer, Gerd, Auteur . - 2009 . - pp. 4553–4564. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4553–4564 Mots-clés : CO2--solubility  Aqueous  solutions  Acetone  Gibbs  ensemble  Monte  Carlo  method Résumé : The correlation and prediction of the solubility of gases in (nonelectrolyte as well as in electrolyte) aqueous/organic solvent mixtures is an important topic in many areas of chemical engineering. Despite the importance of that field, comparatively little attention has been given to that area in both classical thermodynamics (i.e., correlation methods that are based on semiempirical expressions for the excess Gibbs energy) and molecular simulation (where gas solubility can be predicted from intermolecular pair potentials). In the work presented here, recently published experimental data for the solubility of carbon dioxide in aqueous solutions of acetone (covering temperatures from 313 to 395 K at pressures ranging up to about 9 MPa) are used for testing a semiempirical, classical method (for the correlation of such gas solubility phenomena) as well as the Gibbs ensemble Monte Carlo method (GEMC) (for predicting the solubility of carbon dioxide in aqueous solutions of acetone from published intermolecular pair potentials without using any adjustable binary interaction parameter). The correlation method reproduces the experimental data (nearly) within experimental uncertainty, as was expected. The predictions by the GEMC method also agree well with the experimental data. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801015u

Solubility of hydrogen sulfide in aqueous solutions of N-methyldiethanolamine and piperazine / Dirk Speyer in Industrial & engineering chemistry research, Vol. 51 N° 38 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 38 (Septembre 2012) . - pp. 12549-12556 Titre : Solubility of hydrogen sulfide in aqueous solutions of N-methyldiethanolamine and piperazine Type de document : texte imprimé Auteurs : Dirk Speyer, Auteur ; Arne Böttger, Auteur ; Maurer, Gerd, Auteur Année de publication : 2012 Article en page(s) : pp. 12549-12556 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Aqueous  solution  Hydrogen  sulfides  Solubility Résumé : The solubility of hydrogen sulfide in an aqueous mixture of 2,2'-methyliminodiethanol (N-methyldiethanolamine, [CAS 105-59-9], MDEA) and 1,4-diazacyclohexane (piperazine, [CAS 110-85-0], PIPH2) was measured over a wide range of gas-loadings (stoichiometric molar ratios of hydrogen sulfide to (MDEA + PIPH2) between about 0.014 and 1.67) at three temperatures (about 313 K, 353 K, and 393 K) by headspace gas chromatography as well as by a synthetic gas solubility method. The molality of MDEA in the aqueous mixture was about 4.5 mol·(kg water)―1 and that of PIPH2 about 1.6 mol·(kg water)―1. The headspace gas chromatography technique was applied in the low pressure range (partial pressure of H2S between 0.64 and 125.7 kPa, stoichiometric molar ratio of H2S to (MDEA + PIPH2) between about 0.014 and 0.73). The synthetic method was applied in the high pressure range (total pressure between 0.2 and 5.5 MPa, stoichiometric molar ratio of H2S to (MDEA + PIPH2) between about about 0.51 and 1.67). The new experimental results are compared to prediction results from a thermodynamic model that was parametrized using only experimental results for the solubility of H2S data in the aqueous solution of the single amines in the high pressure range. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26399707 [article] Solubility of hydrogen sulfide in aqueous solutions of N-methyldiethanolamine and piperazine [texte imprimé] / Dirk Speyer, Auteur ; Arne Böttger, Auteur ; Maurer, Gerd, Auteur . - 2012 . - pp. 12549-12556. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 38 (Septembre 2012) . - pp. 12549-12556 Mots-clés : Aqueous  solution  Hydrogen  sulfides  Solubility Résumé : The solubility of hydrogen sulfide in an aqueous mixture of 2,2'-methyliminodiethanol (N-methyldiethanolamine, [CAS 105-59-9], MDEA) and 1,4-diazacyclohexane (piperazine, [CAS 110-85-0], PIPH2) was measured over a wide range of gas-loadings (stoichiometric molar ratios of hydrogen sulfide to (MDEA + PIPH2) between about 0.014 and 1.67) at three temperatures (about 313 K, 353 K, and 393 K) by headspace gas chromatography as well as by a synthetic gas solubility method. The molality of MDEA in the aqueous mixture was about 4.5 mol·(kg water)―1 and that of PIPH2 about 1.6 mol·(kg water)―1. The headspace gas chromatography technique was applied in the low pressure range (partial pressure of H2S between 0.64 and 125.7 kPa, stoichiometric molar ratio of H2S to (MDEA + PIPH2) between about 0.014 and 0.73). The synthetic method was applied in the high pressure range (total pressure between 0.2 and 5.5 MPa, stoichiometric molar ratio of H2S to (MDEA + PIPH2) between about about 0.51 and 1.67). The new experimental results are compared to prediction results from a thermodynamic model that was parametrized using only experimental results for the solubility of H2S data in the aqueous solution of the single amines in the high pressure range. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26399707