Measurement and prediction of interfacial tension of binary mixtures / Nino-Amezquita, Oscar G. in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 592–601 Titre : Measurement and prediction of interfacial tension of binary mixtures Type de document : texte imprimé Auteurs : Nino-Amezquita, Oscar G., Auteur ; Sabine Enders, Auteur ; Jaeger, Philip T., Auteur Année de publication : 2010 Article en page(s) : pp 592–601 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Binary mixtures Peng−  Robinson equation Methane Hexane Liquid composition. Résumé : The density gradient theory was combined with a modern equation of state based on statistical mechanics, the perturbed chain-statistical association fluid theory, or with the well-known Peng−Robinson equation of state, and is applied to compute the surface tension of various binary mixtures made up of nonpolar substances. Additionally, some new data for the system methane + hexane and methane + heptane were measured using the pendant drop method equipped with a high-pressure cell. Both equations of state can be used to predict the surface tension of mixtures very close to experimental data. The surface tension of pure ethane could also be predicted using the surface tension data of other n-alkanes. Additionally, the surface tensions for mixtures as a function of liquid composition, of temperature, and of pressure were calculated for systems, where no experimental data are available. If the mixture contains a high volatile component, strong relative enrichment effects in the interface could be observed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901209z [article] Measurement and prediction of interfacial tension of binary mixtures [texte imprimé] / Nino-Amezquita, Oscar G., Auteur ; Sabine Enders, Auteur ; Jaeger, Philip T., Auteur . - 2010 . - pp 592–601. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 592–601 Mots-clés : Binary mixtures Peng−  Robinson equation Methane Hexane Liquid composition. Résumé : The density gradient theory was combined with a modern equation of state based on statistical mechanics, the perturbed chain-statistical association fluid theory, or with the well-known Peng−Robinson equation of state, and is applied to compute the surface tension of various binary mixtures made up of nonpolar substances. Additionally, some new data for the system methane + hexane and methane + heptane were measured using the pendant drop method equipped with a high-pressure cell. Both equations of state can be used to predict the surface tension of mixtures very close to experimental data. The surface tension of pure ethane could also be predicted using the surface tension data of other n-alkanes. Additionally, the surface tensions for mixtures as a function of liquid composition, of temperature, and of pressure were calculated for systems, where no experimental data are available. If the mixture contains a high volatile component, strong relative enrichment effects in the interface could be observed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901209z

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Measurement of transport properties for selected siloxanes and their mixtures used as working fluids for organic rankine cycles / Rima Abbas in Industrial & engineering chemistry research, Vol. 50 N° 14 (Juillet 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8756-8763 Titre : Measurement of transport properties for selected siloxanes and their mixtures used as working fluids for organic rankine cycles Type de document : texte imprimé Auteurs : Rima Abbas, Auteur ; E. Christian Ihmels, Auteur ; Sabine Enders, Auteur Année de publication : 2011 Article en page(s) : pp. 8756-8763 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Transport properties Résumé : Thermal conductivities have been measured for three linear siloxanes [hexamethyl disiloxane (MM), octamethyl trisiloxane (MDM), decamethyltetrasiloxane (MD2M)], two cyclic siloxanes [octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5)], and a mixture of 50 mass % MDM + 50 mass % MD2M in the temperature range from 290 to 520 K and the pressure range from 500 to 10000 kPa using the transient hot wire method and correlated with a temperature―pressure―thermal conductivity relationship. Moreover, the thermal conductivities at atmospheric pressure were measured for MM, D4, D5, and MD2M. The data were compared with the available data from the literature for four compounds. Additionally, the viscosities of the five siloxanes were measured in the temperature range from 238 to 378 K at atmospheric pressure using a rotational Stabinger viscometer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346916 [article] Measurement of transport properties for selected siloxanes and their mixtures used as working fluids for organic rankine cycles [texte imprimé] / Rima Abbas, Auteur ; E. Christian Ihmels, Auteur ; Sabine Enders, Auteur . - 2011 . - pp. 8756-8763. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8756-8763 Mots-clés : Transport properties Résumé : Thermal conductivities have been measured for three linear siloxanes [hexamethyl disiloxane (MM), octamethyl trisiloxane (MDM), decamethyltetrasiloxane (MD2M)], two cyclic siloxanes [octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5)], and a mixture of 50 mass % MDM + 50 mass % MD2M in the temperature range from 290 to 520 K and the pressure range from 500 to 10000 kPa using the transient hot wire method and correlated with a temperature―pressure―thermal conductivity relationship. Moreover, the thermal conductivities at atmospheric pressure were measured for MM, D4, D5, and MD2M. The data were compared with the available data from the literature for four compounds. Additionally, the viscosities of the five siloxanes were measured in the temperature range from 238 to 378 K at atmospheric pressure using a rotational Stabinger viscometer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346916

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