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Modeling Viscosity of Ionic Liquids with Electrolyte Perturbed-Chain Statistical Associating Fluid Theory and Free Volume Theory
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing .
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. Department of Chemical Engineering, Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry, Huaiyin Institute of Technology, Huaian.
Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing .
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2018 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 57, no 26, p. 8784-8801Article in journal (Refereed) Published
Abstract [en]

Viscosity is one of the most important physical properties when developing ionic liquids (ILs) for industrial applications such as CO2 separation. The viscosities of ILs have been measured experimentally, while the modeling work is still limited. In this work, the electrolyte perturbed-chain statistical associating fluid theory (ePC-SAFT) was combined with the free volume theory (FVT) to model the viscosities of pure ILs and IL mixtures up to high pressures and temperatures, in which the ePC-SAFT was used to calculate the density as inputs for modeling the viscosity of ILs with FVT. The ILs under consideration contain one of the IL cations [Cnmim]+, [Cnpy]+, [Cnmpy]+, [Cnmpyr]+, or [THTDP]+ and one of the IL anions [Tf2N], [PF6], [BF4], [tfo], [DCA], [SCN], [C1SO4], [C2SO4], [eFAP], Cl, [Ac], or Br. In total, 89 ILs were considered combined with a thorough literature survey of the available experimental viscosity data and evaluation. The comparison with the available experimental viscosities shows that the model can provide reliable representation and prediction for most of the pure ILs in a wide temperature and pressure range, and it can be further used to predict and describe the viscosity of IL mixtures reliably.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2018. Vol. 57, no 26, p. 8784-8801
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-69298DOI: 10.1021/acs.iecr.8b00328ISI: 000438310800014Scopus ID: 2-s2.0-85048130276OAI: oai:DiVA.org:ltu-69298DiVA, id: diva2:1216098
Note

Validerad;2018;Nivå 2;2018-08-02 (rokbeg)

Available from: 2018-06-11 Created: 2018-06-11 Last updated: 2018-08-02Bibliographically approved

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Sun, YunhaoShen, GulouJi, Xiaoyan

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