Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique

This paper reports experimental activity coefficients at infinite dilution, , for methanol, ethanol and n-hexane in three refined vegetable oils (soybean, sunflower, and rapeseed oils) measured using the dilutor technique (inert gas stripping method). The measurements were carried out in the tempera...

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Principais autores:	Chiavone Filho, Osvaldo, Beltinga, Patrícia Castro, Rarey, Jürgen, Gmehling, Jürgen, Ceriani, Roberta, Meirelles, Antonio José de Almeida
Formato:	article
Idioma:	English
Publicado em:	Elsevier
Assuntos:	Limiting activity coefficient Inert gas stripping method Original UNIFAC model Modified UNIFAC (Dortmund) model Fatty compounds
Endereço do item:	https://repositorio.ufrn.br/handle/123456789/45012
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spelling	ri-123456789-450122023-02-06T18:41:34Z Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique Chiavone Filho, Osvaldo Beltinga, Patrícia Castro Rarey, Jürgen Gmehling, Jürgen Ceriani, Roberta Meirelles, Antonio José de Almeida Limiting activity coefficient Inert gas stripping method Original UNIFAC model Modified UNIFAC (Dortmund) model Fatty compounds This paper reports experimental activity coefficients at infinite dilution, , for methanol, ethanol and n-hexane in three refined vegetable oils (soybean, sunflower, and rapeseed oils) measured using the dilutor technique (inert gas stripping method). The measurements were carried out in the temperature range between 313.15 and 353.15 K. Furthermore, activity coefficients at infinite dilution for various solutes (acetone, methanol, ethanol, n-hexane, cyclohexane and toluene) were measured in capric (decanoic) acid using the same technique in the temperature range from 313.13 to 353.30 K. The new data obtained for capric acid and soybean oil were compared with already published experimental data. Additionally, densities of the investigated vegetable oils were measured in the temperature range from 293.15 to 353.15 K. Using the experimental values obtained over the temperature range, the partial molar excess Gibbs energy , enthalpy and entropy at infinite dilution were determined. The relative error for the measurements carried out using the dilutor technique is approximately ±2.5%. The measured data in the investigated refined vegetable oils were also compared with the results of the group contribution methods original UNIFAC and modified UNIFAC (Dortmund) and an extension of the latter method to triacylglycerols was proposed 2021-11-24T19:08:49Z 2021-11-24T19:08:49Z 2014-01-15 article BELTING, Patrícia C.; RAREY, Jürgen; GMEHLING, Jürgen; CERIANI, Roberta; CHIAVONE-FILHO, Osvaldo; MEIRELLES, Antonio J.A.. Measurements of activity coefficients at infinite dilution in vegetable oils and capric acid using the dilutor technique. Fluid Phase Equilibria, [S.L.], v. 361, p. 215-222, jan. 2014. Disponível em: https://www.sciencedirect.com/science/article/pii/S0378381213006195?via%3Dihub Acesso em: 02 jul. 2021. https://doi.org/10.1016/j.fluid.2013.10.035 0378-3812 https://repositorio.ufrn.br/handle/123456789/45012 10.1016/j.fluid.2013.10.035 en Elsevier
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Limiting activity coefficient Inert gas stripping method Original UNIFAC model Modified UNIFAC (Dortmund) model Fatty compounds
spellingShingle	Limiting activity coefficient Inert gas stripping method Original UNIFAC model Modified UNIFAC (Dortmund) model Fatty compounds Chiavone Filho, Osvaldo Beltinga, Patrícia Castro Rarey, Jürgen Gmehling, Jürgen Ceriani, Roberta Meirelles, Antonio José de Almeida Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
description	This paper reports experimental activity coefficients at infinite dilution, , for methanol, ethanol and n-hexane in three refined vegetable oils (soybean, sunflower, and rapeseed oils) measured using the dilutor technique (inert gas stripping method). The measurements were carried out in the temperature range between 313.15 and 353.15 K. Furthermore, activity coefficients at infinite dilution for various solutes (acetone, methanol, ethanol, n-hexane, cyclohexane and toluene) were measured in capric (decanoic) acid using the same technique in the temperature range from 313.13 to 353.30 K. The new data obtained for capric acid and soybean oil were compared with already published experimental data. Additionally, densities of the investigated vegetable oils were measured in the temperature range from 293.15 to 353.15 K. Using the experimental values obtained over the temperature range, the partial molar excess Gibbs energy , enthalpy and entropy at infinite dilution were determined. The relative error for the measurements carried out using the dilutor technique is approximately ±2.5%. The measured data in the investigated refined vegetable oils were also compared with the results of the group contribution methods original UNIFAC and modified UNIFAC (Dortmund) and an extension of the latter method to triacylglycerols was proposed
format	article
author	Chiavone Filho, Osvaldo Beltinga, Patrícia Castro Rarey, Jürgen Gmehling, Jürgen Ceriani, Roberta Meirelles, Antonio José de Almeida
author_facet	Chiavone Filho, Osvaldo Beltinga, Patrícia Castro Rarey, Jürgen Gmehling, Jürgen Ceriani, Roberta Meirelles, Antonio José de Almeida
author_sort	Chiavone Filho, Osvaldo
title	Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
title_short	Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
title_full	Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
title_fullStr	Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
title_full_unstemmed	Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
title_sort	measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique
publisher	Elsevier
publishDate	2021
url	https://repositorio.ufrn.br/handle/123456789/45012
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Measurements of activity coefficients at infinite dilution in vegetableoils and capric acid using the dilutor technique

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