Measurement and modelling of high pressure bubble- and dew-point data for the CO2 + 1-decanol + 3,7-dimethyl-1-octanol system

Latsky, C.; Schwarz, Cara E.

doi:10.1016/j.fluid.2019.01.026

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…As stated previously, a commercial process simulator was used to allow the model presented here to be industrially relevant. The RK-ASPEN model was selected as previous studies ,,− have found it to be one of the better suited models within the Aspen Plus database to predict the high-pressure phase behavior of systems containing CO 2 with detergent range alkanes and alcohols.…”

Section: Thermodynamic Modeling In Aspen Plusmentioning

confidence: 99%

“…Previous studies by Zamudio, Smith and Schwarz, and Latsky and Schwarz − have investigated the effect of these interactions on the solubility of binary, ternary, and quaternary mixtures containing CO 2 (solvent) with n -dodecane, 1-decanol, and 3,7-dimethyl-1-octanol (solutes). The reason for selecting this model system is that it corresponds to a typical product stream encountered in the detergent manufacturing industry. − These solubility investigations indicated the presence of significant solute–solute interactions in mixtures containing CO 2 with detergent range alkanes and alcohols, and it was found that these interactions lead to complex phase behavior such as cosolvency and temperature inversions.…”

Section: Introductionmentioning

confidence: 99%

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High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

Latsky

Schwarz

2019

J. Chem. Eng. Data

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Vapor−liquid equilibrium (VLE) data were measured for the quaternary system containing CO 2 , n-dodecane (nC 12 ), 1-decanol (C 10 OH), and 3,7-dimethyl-1-octanol (37DM1O). The data were measured using a previously constructed static-analytic setup at temperatures between 308 and 348 K and pressures up to 19.2 MPa. The measured data indicated signs of a temperature inversion in the 1-decanol-rich mixtures. The relative solubility analysis revealed that the components in the 1-decanol-rich mixtures could be separated with greater ease than the components in the n-dodecane-rich mixture. The greater difficulty associated with separating components in the n-dodecane-rich mixture is likely linked to cosolvency effects which cause pinches in separation. The data were modeled in Aspen Plus, using the RK-ASPEN model. The modeling results highlighted the need for fitted solute−solute interaction parameters. However, even with the inclusion of these parameters there still exists significant deviation between the experimental and predicted data. The RK-ASPEN model can, therefore, only be used to approximate VLE data for the system.

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Section: Thermodynamic Modeling In Aspen Plusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

Latsky

Schwarz

2019

J. Chem. Eng. Data

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“…Currently, separation of these mixtures is exacted by extractive distillation, while supercritical fluid fractionation has also been shown to be a feasible method . A large quantity of high-pressure phase equilibrium data have been measured for systems of 1-alcohol + n -alkanes in a variety of supercritical solvents including ethane, propane, and carbon dioxide. − In contrast, low-pressure vapor liquid equilibrium (LPVLE) data which can provide insight into the intermolecular interactions occurring between 1-alcohols and n -alkanes are not as readily available or well investigated. These data can also be used to improve the currently employed extractive distillation processes as well as thermodynamic modeling for these systems.…”

Section: Introductionmentioning

confidence: 99%

Low-Pressure Phase Equilibrium Data for Binary Systems of 1-Alcohols (C_nOH) and n-Alkanes (C_n+2)

2023

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Five new isobaric vapor−liquid equilibrium data sets for 1alcohol (C n OH) + n-alkane (C n+2 ) systems were measured at 40 kPa, including 1-hexanol + n-octane, 1-heptanol + n-nonane, 1-octanol + n-decane, 1-nonanol + n-undecane, and 1-decanol + n-dodecane. The data were measured utilizing a verified all-glass dynamic recirculating still, and all data sets passed the L/W, McDermott−Ellis, and Fredenslund thermodynamic consistency tests. Each of the five measured systems exhibited positive azeotropy, which is indicative of positive deviations from ideality, in alignment with the previously measured C n OH + C n+3 and C n OH + C n+4 systems. The PSRK + UNIFAC, NRTL, and PSRK + NRTL models were used to predict or correlate each of the newly measured systems, and the NRTL model consistently performed better than both of the PSRK model variations. The PSRK + UNIFAC model, however, still provided reasonable model predictions for the lower homologue combinations and can therefore be used to predict phase behavior for similar systems in the absence of experimental phase equilibrium data.

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Vapor-liquid equilibria for the CO2 + trimethoxymethylsilane and CO2 + triethoxymethylsilane systems under high-pressure conditions

Baskaran,

Kim,

Behera

et al. 2025

Fluid Phase Equilibria

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Measurement and modelling of high pressure bubble- and dew-point data for the CO2 + 1-decanol + 3,7-dimethyl-1-octanol system

Cited by 4 publications

References 29 publications

High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

Low-Pressure Phase Equilibrium Data for Binary Systems of 1-Alcohols (C_nOH) and n-Alkanes (C_n+2)

Vapor-liquid equilibria for the CO2 + trimethoxymethylsilane and CO2 + triethoxymethylsilane systems under high-pressure conditions

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Measurement and modelling of high pressure bubble- and dew-point data for the CO2 + 1-decanol + 3,7-dimethyl-1-octanol system

Cited by 4 publications

References 29 publications

High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

High Pressure Vapor–Liquid Equilibrium Data for the Quaternary Carbon Dioxide + 1-Decanol + 3,7-Dimethyl-1-octanol + n-Dodecane System

Low-Pressure Phase Equilibrium Data for Binary Systems of 1-Alcohols (CnOH) and n-Alkanes (Cn+2)

Vapor-liquid equilibria for the CO2 + trimethoxymethylsilane and CO2 + triethoxymethylsilane systems under high-pressure conditions

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Low-Pressure Phase Equilibrium Data for Binary Systems of 1-Alcohols (C_nOH) and n-Alkanes (C_n+2)