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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sequestration of light hydrocarbons in Ionic Liquids at high-pressures: Consistency and thermodynamic modeling

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Author(s):
Arce, Pedro F. [1] ; Igarashi, Edson M. [1] ; Freire, V, Nian ; Vasquez, Dreidy M. [2] ; Robles, Pedro A. [2]
Total Authors: 5
Affiliation:
[1] V, Univ Sao Paulo, Engn Sch Lorena, Chem Engn Dept, BR-12602810 Sao Paulo - Brazil
[2] Pontificia Univ Catolica Valparaiso, Escuela Ingn Quim, Valparaiso 2340000 - Chile
Total Affiliations: 2
Document type: Journal article
Source: Fluid Phase Equilibria; v. 546, OCT 15 2021.
Web of Science Citations: 0
Abstract

Ionic liquids are applicable in the recovery of valuable products, remotion of polluting agents, and used in many CO2-capture techniques. In this work, high-pressure vapor-liquid equilibria of twenty-one binary mixtures of light hydrocarbons + IL has been modelled with Peng-Robinson/Stryjek-Vera equation of state applying Wong-Sandler mixing rules and van Laar model for the gamma-phi approach and Perturbed Chain-Statistical Associating Fluid Theory equation of state for the phi-phi approach. Critical properties were determined using a group contribution method. Adjustable characteristic pure component parameters were obtained using predicted vapor pressures and saturated liquids densities values. Experimental data, obtained from literature, were subjected to thermodynamic consistency area test. For the thermodynamic modelling, adjustable parameters were fitted between predicted and experimental bubble pressure. Van Laar and interaction parameters were regarded as temperature-dependent. Results obtained for both models, in terms of the main deviations between experimental and calculated pressures, were reasonably satisfactory. (C) 2021 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 15/05155-8 - Modeling of the thermophysical properties of pure fluids (ionic liquids and components present in natural products) and thermodynamic behaviour of the phase equilibrium of mixtures
Grantee:Pedro Felipe Arce Castillo
Support Opportunities: Regular Research Grants
FAPESP's process: 18/03739-0 - EXPERIMENTAL MEASUREMENT, CORRELATION AND PREDICTION OF THE FLUID PHASE BEHAVIOR OF SYSTEMS CONTAINING IONIC LIQUIDS (IMIDAZOLIUM) AND SUPERCRITICAL CO2.
Grantee:Pedro Felipe Arce Castillo
Support Opportunities: Regular Research Grants