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Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa

[Image: see text] Using a high-pressure phase equilibrium apparatus and vibrating-tube densimeter, phase transition pressures of CO(2) (1) + acetic acid (2) binary systems with x(2) = 0.000, 0.107, 0.163, 0.222, and 1.000 were measured under temperatures from 308.15 to 338.15 K. Besides, the densiti...

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Autores principales: Zhu, Teng, Li, Yuming, Gong, Houjian, Dong, Mingzhe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970467/
https://www.ncbi.nlm.nih.gov/pubmed/33748579
http://dx.doi.org/10.1021/acsomega.0c05462
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author Zhu, Teng
Li, Yuming
Gong, Houjian
Dong, Mingzhe
author_facet Zhu, Teng
Li, Yuming
Gong, Houjian
Dong, Mingzhe
author_sort Zhu, Teng
collection PubMed
description [Image: see text] Using a high-pressure phase equilibrium apparatus and vibrating-tube densimeter, phase transition pressures of CO(2) (1) + acetic acid (2) binary systems with x(2) = 0.000, 0.107, 0.163, 0.222, and 1.000 were measured under temperatures from 308.15 to 338.15 K. Besides, the densities at the same composition and temperature under pressure from 15 to 45 MPa were also detected, and the volumes of mixing (ΔV(m)) were calculated. Three prediction models (SRK EOS, PC-SAFT EOS, and TS model) were introduced to predict and correlate the density of binary systems, which was found to have positive relationships with temperature and acetic acid concentration and a negative relationship with pressure. Thereinto, the variation trend of CO(2) density with pressure tends to be flat under high pressure, and which of acetic acid density increased linearly with pressure. ΔV(m) are negative, and their absolute value increases with the increase of temperature and the decrease of pressure. The work herein could provide a theoretical guide and basic data for supercritical CO(2) extraction technology and CO(2) application in oil field development.
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spelling pubmed-79704672021-03-19 Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa Zhu, Teng Li, Yuming Gong, Houjian Dong, Mingzhe ACS Omega [Image: see text] Using a high-pressure phase equilibrium apparatus and vibrating-tube densimeter, phase transition pressures of CO(2) (1) + acetic acid (2) binary systems with x(2) = 0.000, 0.107, 0.163, 0.222, and 1.000 were measured under temperatures from 308.15 to 338.15 K. Besides, the densities at the same composition and temperature under pressure from 15 to 45 MPa were also detected, and the volumes of mixing (ΔV(m)) were calculated. Three prediction models (SRK EOS, PC-SAFT EOS, and TS model) were introduced to predict and correlate the density of binary systems, which was found to have positive relationships with temperature and acetic acid concentration and a negative relationship with pressure. Thereinto, the variation trend of CO(2) density with pressure tends to be flat under high pressure, and which of acetic acid density increased linearly with pressure. ΔV(m) are negative, and their absolute value increases with the increase of temperature and the decrease of pressure. The work herein could provide a theoretical guide and basic data for supercritical CO(2) extraction technology and CO(2) application in oil field development. American Chemical Society 2021-03-05 /pmc/articles/PMC7970467/ /pubmed/33748579 http://dx.doi.org/10.1021/acsomega.0c05462 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Zhu, Teng
Li, Yuming
Gong, Houjian
Dong, Mingzhe
Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title_full Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title_fullStr Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title_full_unstemmed Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title_short Phase Equilibrium and Density of CO(2) + Acetic Acid Systems from 308.15 to 338.15 K and 15 to 45 MPa
title_sort phase equilibrium and density of co(2) + acetic acid systems from 308.15 to 338.15 k and 15 to 45 mpa
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970467/
https://www.ncbi.nlm.nih.gov/pubmed/33748579
http://dx.doi.org/10.1021/acsomega.0c05462
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