Documents disponibles écrits par cet auteur

Can toluene or xylene form clathrate hydrates? / Amir H. Mohammadi in Industrial & engineering chemistry research, Vol. 48 N° 12 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5916–5918 Titre : Can toluene or xylene form clathrate hydrates? Type de document : texte imprimé Auteurs : Amir H. Mohammadi, Auteur ; Veronica Belandria, Auteur ; Richon, Dominique, Auteur Année de publication : 2009 Article en page(s) : pp. 5916–5918 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Toluene  p-xylene  Clathrate  hydrate  formation Résumé : In this communication, we examine the possibility of clathrate hydrate formation of toluene and o-, m-, or p-xylene with methane as help gas. An isochoric pressure-search method was used to measure hydrate phase equilibrium boundaries. The reliability of this method is tested by generating hydrate phase equilibrium boundary data for the methane−benzene−water system and comparing them with experimental data reported in the literature. The acceptable agreements demonstrate the reliability of the technique used in this work. The new experimental data of hydrate phase equilibrium boundary for the methane−(toluene/(o/m/p)-xylene)−water systems are compared with some selected experimental data from the literature for the methane−water system to study the possibility of shifting the hydrate phase equilibrium boundary of the latter system by the presence of toluene and o-, m-, or p-xylene. It is shown that toluene and o-, m-, or p-xylene have little or almost no effect on the hydrate phase equilibrium boundary of the methane−water system. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900362v [article] Can toluene or xylene form clathrate hydrates? [texte imprimé] / Amir H. Mohammadi, Auteur ; Veronica Belandria, Auteur ; Richon, Dominique, Auteur . - 2009 . - pp. 5916–5918. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5916–5918 Mots-clés : Toluene  p-xylene  Clathrate  hydrate  formation Résumé : In this communication, we examine the possibility of clathrate hydrate formation of toluene and o-, m-, or p-xylene with methane as help gas. An isochoric pressure-search method was used to measure hydrate phase equilibrium boundaries. The reliability of this method is tested by generating hydrate phase equilibrium boundary data for the methane−benzene−water system and comparing them with experimental data reported in the literature. The acceptable agreements demonstrate the reliability of the technique used in this work. The new experimental data of hydrate phase equilibrium boundary for the methane−(toluene/(o/m/p)-xylene)−water systems are compared with some selected experimental data from the literature for the methane−water system to study the possibility of shifting the hydrate phase equilibrium boundary of the latter system by the presence of toluene and o-, m-, or p-xylene. It is shown that toluene and o-, m-, or p-xylene have little or almost no effect on the hydrate phase equilibrium boundary of the methane−water system. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900362v

Compositional analysis and hydrate dissociation conditions measurements for carbon dioxide + methane + water system / Veronica Belandria in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5783–5794 Titre : Compositional analysis and hydrate dissociation conditions measurements for carbon dioxide + methane + water system Type de document : texte imprimé Auteurs : Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur Année de publication : 2011 Article en page(s) : pp. 5783–5794 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Methane Résumé : A detailed description of an experimental setup based on the “static-analytic” technique with gas phase capillary sampling designed, built, and improved “in-house” to measure phase equilibria (pressure, temperature, and compositions) under gas hydrate formation conditions is presented in this work. The apparatus is suitable for measurements at temperatures ranging from 233 to 373 K and pressures up to 60 MPa. It was used to study phase equilibria in the carbon dioxide + methane + water system under hydrate formation conditions. An isochoric pressure-search method was used to measure hydrate dissociation conditions. The experimental data have been compared successfully with the literature data. The compositions of the gas phase in equilibrium with the hydrate and aqueous phases were measured using a gas chromatography technique and compared successfully with the literature data. The compositions of the hydrate and aqueous phases were determined by applying material balance equations. The experimental data on the compositions of the hydrate have been compared successfully with the literature data. To solve the latter equations, the Newton’s numerical method coupled with the differential evolution optimization strategy was employed. All the aforementioned experimental data (hydrate dissociation conditions + composition analyses) have been compared with the predictions of two thermodynamic models, namely CSMGem and HWHYD. A discussion is made on the reliability of the predictions of the latter models. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101959t [article] Compositional analysis and hydrate dissociation conditions measurements for carbon dioxide + methane + water system [texte imprimé] / Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur . - 2011 . - pp. 5783–5794. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5783–5794 Mots-clés : Carbon  dioxide  Methane Résumé : A detailed description of an experimental setup based on the “static-analytic” technique with gas phase capillary sampling designed, built, and improved “in-house” to measure phase equilibria (pressure, temperature, and compositions) under gas hydrate formation conditions is presented in this work. The apparatus is suitable for measurements at temperatures ranging from 233 to 373 K and pressures up to 60 MPa. It was used to study phase equilibria in the carbon dioxide + methane + water system under hydrate formation conditions. An isochoric pressure-search method was used to measure hydrate dissociation conditions. The experimental data have been compared successfully with the literature data. The compositions of the gas phase in equilibrium with the hydrate and aqueous phases were measured using a gas chromatography technique and compared successfully with the literature data. The compositions of the hydrate and aqueous phases were determined by applying material balance equations. The experimental data on the compositions of the hydrate have been compared successfully with the literature data. To solve the latter equations, the Newton’s numerical method coupled with the differential evolution optimization strategy was employed. All the aforementioned experimental data (hydrate dissociation conditions + composition analyses) have been compared with the predictions of two thermodynamic models, namely CSMGem and HWHYD. A discussion is made on the reliability of the predictions of the latter models. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101959t

Gas hydrate formation in carbon dioxide + nitrogen + water system / Veronica Belandria in Industrial & engineering chemistry research, Vol. 50 N° 8 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4722–4730 Titre : Gas hydrate formation in carbon dioxide + nitrogen + water system : compositional analysis of equilibrium phases Type de document : texte imprimé Auteurs : Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur Année de publication : 2011 Article en page(s) : pp. 4722–4730 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Gas  Analysis  equilibrium  phases Résumé : In this Article, experimental data on compositions of equilibrium phases under gas hydrate formation conditions are reported for the carbon dioxide + nitrogen + water system in the (273.6 to 281.7) K temperature range for pressures up to 17.628 MPa. An experimental “in-house” setup based on the “static-analytic” technique was employed for performing the measurements. An isochoric pressure-search method in combination with gas phase compositional analysis was used to measure compositions of the gas phase in equilibrium with gas hydrate and liquid water. A material balance method was used to determine compositions of the hydrate and aqueous phases. A mathematical approach based on the Newton’s numerical method and the Differential Evolution optimization strategy was applied to solve the material balance equations. The compositional data generated in this work are compared with the corresponding experimental data reported in the literature as well as the predictions of the CSMGem thermodynamic model. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101635k [article] Gas hydrate formation in carbon dioxide + nitrogen + water system : compositional analysis of equilibrium phases [texte imprimé] / Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur . - 2011 . - pp. 4722–4730. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4722–4730 Mots-clés : Gas  Analysis  equilibrium  phases Résumé : In this Article, experimental data on compositions of equilibrium phases under gas hydrate formation conditions are reported for the carbon dioxide + nitrogen + water system in the (273.6 to 281.7) K temperature range for pressures up to 17.628 MPa. An experimental “in-house” setup based on the “static-analytic” technique was employed for performing the measurements. An isochoric pressure-search method in combination with gas phase compositional analysis was used to measure compositions of the gas phase in equilibrium with gas hydrate and liquid water. A material balance method was used to determine compositions of the hydrate and aqueous phases. A mathematical approach based on the Newton’s numerical method and the Differential Evolution optimization strategy was applied to solve the material balance equations. The compositional data generated in this work are compared with the corresponding experimental data reported in the literature as well as the predictions of the CSMGem thermodynamic model. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101635k

Study of gas hydrate formation in the carbon dioxide + hydrogen + water systems / Veronica Belandria in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6455-6459 Titre : Study of gas hydrate formation in the carbon dioxide + hydrogen + water systems : Compositional Analysis of the gas phase Type de document : texte imprimé Auteurs : Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur Année de publication : 2011 Article en page(s) : pp. 6455-6459 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Gas  hydrates Résumé : Molar compositions of carbon dioxide (and hydrogen) in the gas phase in equilibrium with gas hydrate and aqueous phases were measured for various (H2 + CO2) gas mixtures + water systems in the temperature range of 273.6-281.2 K at pressures up to ~9 MPa. The compositions of the gas phase were measured using an isochoric technique, in combination with the ROLSI capillary gas-phase sampling and a gas chromatography technique. The compositional data generated in this work are compared with the literature data, and the agreement is found to be generally acceptable. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158943 [article] Study of gas hydrate formation in the carbon dioxide + hydrogen + water systems : Compositional Analysis of the gas phase [texte imprimé] / Veronica Belandria, Auteur ; Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur . - 2011 . - pp. 6455-6459. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6455-6459 Mots-clés : Carbon  dioxide  Gas  hydrates Résumé : Molar compositions of carbon dioxide (and hydrogen) in the gas phase in equilibrium with gas hydrate and aqueous phases were measured for various (H2 + CO2) gas mixtures + water systems in the temperature range of 273.6-281.2 K at pressures up to ~9 MPa. The compositions of the gas phase were measured using an isochoric technique, in combination with the ROLSI capillary gas-phase sampling and a gas chromatography technique. The compositional data generated in this work are compared with the literature data, and the agreement is found to be generally acceptable. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158943