High-pressure vapor + liquid equilibria for the binary system CO2 + (E)-2-hexenal

Rafael Villablanca-Ahues; Pablo López-Porfiri; Roberto I. Canales; Juan C. de la Fuente

doi:10.1016/j.supflu.2020.105027

High-pressure vapor + liquid equilibria for the binary system CO2 + (E)-2-hexenal

Rafael Villablanca-Ahues, Pablo López-Porfiri, Roberto I. Canales, Juan C. de la Fuente

Department of Chemical Engineering

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Abstract

The isothermal vapor + liquid equilibria of carbon dioxide + (E)-2-hexenal (a key apple aroma) wasmeasured using a visual equilibrium cell with an analytic methodology. The selected isotherms were(313.2, 323.2 and 333.2) K, and the pressures assessed ranged from (2.2–9.8) MPa. The thermodynamicconsistency of the experimental data was verified, and the uncertainties of the molar fractions of thevapor and liquid phases were estimated. The density and dynamic viscosity of pure (E)-2-hexenal weremeasured at 101.13 kPa and temperatures from (292.2–353.2) K. Two equations of state were selected tomodel the vapor + liquid equilibria. The Peng-Robinson with two different mixing rules, and the PerturbedChain - Statistical Associating Fluid Theory. The phase envelopes showed a critical pressure, detected atcarbon dioxide molar fractions ≥ 95 % mol·mol−1

Original language	English
Article number	105027
Journal	The Journal of Supercritical Fluids
Volume	168
Early online date	14 Oct 2020
DOIs	https://doi.org/10.1016/j.supflu.2020.105027
Publication status	Published - 1 Feb 2021

Keywords

(E)-2-hexenal
Carbon dioxide
Density
Experimental
Modeling
Vapor + liquid equilibria
Viscosity

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title = "High-pressure vapor + liquid equilibria for the binary system CO2 + (E)-2-hexenal",

abstract = "The isothermal vapor + liquid equilibria of carbon dioxide + (E)-2-hexenal (a key apple aroma) wasmeasured using a visual equilibrium cell with an analytic methodology. The selected isotherms were(313.2, 323.2 and 333.2) K, and the pressures assessed ranged from (2.2–9.8) MPa. The thermodynamicconsistency of the experimental data was verified, and the uncertainties of the molar fractions of thevapor and liquid phases were estimated. The density and dynamic viscosity of pure (E)-2-hexenal weremeasured at 101.13 kPa and temperatures from (292.2–353.2) K. Two equations of state were selected tomodel the vapor + liquid equilibria. The Peng-Robinson with two different mixing rules, and the PerturbedChain - Statistical Associating Fluid Theory. The phase envelopes showed a critical pressure, detected atcarbon dioxide molar fractions ≥ 95 % mol·mol−1",

keywords = "(E)-2-hexenal, Carbon dioxide, Density, Experimental, Modeling, Vapor + liquid equilibria, Viscosity",

author = "Rafael Villablanca-Ahues and Pablo L{\'o}pez-Porfiri and Canales, {Roberto I.} and {de la Fuente}, {Juan C.}",

note = "Funding Information: This work was funded by the Chilean agency Fondecyt (Regular Project 115-0822), and by the Incentive Program for Scientific Initiation from the Universidad T{\'e}cnica Federico Santa Mar{\'i}a. The authors wish to thank Ana I. Gonz{\'a}lez in particular; her help is greatly appreciated. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.supflu.2020.105027",

language = "English",

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AU - Villablanca-Ahues, Rafael

AU - López-Porfiri, Pablo

AU - Canales, Roberto I.

AU - de la Fuente, Juan C.

N1 - Funding Information: This work was funded by the Chilean agency Fondecyt (Regular Project 115-0822), and by the Incentive Program for Scientific Initiation from the Universidad Técnica Federico Santa María. The authors wish to thank Ana I. González in particular; her help is greatly appreciated. Publisher Copyright: © 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2021/2/1

Y1 - 2021/2/1

N2 - The isothermal vapor + liquid equilibria of carbon dioxide + (E)-2-hexenal (a key apple aroma) wasmeasured using a visual equilibrium cell with an analytic methodology. The selected isotherms were(313.2, 323.2 and 333.2) K, and the pressures assessed ranged from (2.2–9.8) MPa. The thermodynamicconsistency of the experimental data was verified, and the uncertainties of the molar fractions of thevapor and liquid phases were estimated. The density and dynamic viscosity of pure (E)-2-hexenal weremeasured at 101.13 kPa and temperatures from (292.2–353.2) K. Two equations of state were selected tomodel the vapor + liquid equilibria. The Peng-Robinson with two different mixing rules, and the PerturbedChain - Statistical Associating Fluid Theory. The phase envelopes showed a critical pressure, detected atcarbon dioxide molar fractions ≥ 95 % mol·mol−1

AB - The isothermal vapor + liquid equilibria of carbon dioxide + (E)-2-hexenal (a key apple aroma) wasmeasured using a visual equilibrium cell with an analytic methodology. The selected isotherms were(313.2, 323.2 and 333.2) K, and the pressures assessed ranged from (2.2–9.8) MPa. The thermodynamicconsistency of the experimental data was verified, and the uncertainties of the molar fractions of thevapor and liquid phases were estimated. The density and dynamic viscosity of pure (E)-2-hexenal weremeasured at 101.13 kPa and temperatures from (292.2–353.2) K. Two equations of state were selected tomodel the vapor + liquid equilibria. The Peng-Robinson with two different mixing rules, and the PerturbedChain - Statistical Associating Fluid Theory. The phase envelopes showed a critical pressure, detected atcarbon dioxide molar fractions ≥ 95 % mol·mol−1

KW - (E)-2-hexenal

KW - Carbon dioxide

KW - Density

KW - Experimental

KW - Modeling

KW - Vapor + liquid equilibria

KW - Viscosity

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DO - 10.1016/j.supflu.2020.105027

M3 - Article

AN - SCOPUS:85095418559

SN - 0896-8446

VL - 168

JO - The Journal of Supercritical Fluids

JF - The Journal of Supercritical Fluids

M1 - 105027

ER -

High-pressure vapor + liquid equilibria for the binary system CO2 + (E)-2-hexenal

Abstract

Keywords

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