Strategy Combining Free Volume Theory and Fragment Contribution Corresponding State Method for Predicting Viscosities of Ionic Liquids

Wenhui Tu, Shaojuan Zeng*, Xiaochun Zhang, Xuezhong He, Lei Liu, Suojiang Zhang, Xiangping Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, we proposed a strategy that combines the fragment contribution corresponding states (FCCS) and free volume theory (FVT) method, namely FCCS-FVT, to calculate the viscosities of ionic liquids (ILs) covering a wide range of temperatures and pressures. In the method, the FCCS model was used to calculate the critical properties and densities of ILs, and then based on those values, the FVT model was applied to calculate the viscosities of ILs. The results indicated that the FCCS-FVT method shows high accuracy with 6.6% in average absolute relative deviation of total 2138 data points (25 ILs), which covers a wide range of temperatures (258.15-573 K) and pressures (0.06-300 MPa). Moreover, it is more convenient for the FCCS-FVT method to be applied for quick and accurate calculation of viscosities of ILs because it needs only three adjustable parameters.

Original languageEnglish
Pages (from-to)5640-5649
Number of pages10
JournalIndustrial & Engineering Chemistry Research
Volume58
Issue number14
DOIs
StatePublished - 10 Apr 2019
Externally publishedYes

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