Development of a group contribution method for determination of viscosity of ionic liquids at atmospheric pressure

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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In this study, a wide literature survey has been carried out to collect an extensive set of liquid viscosity data for ionic liquids (ILs). A data set consisting of 1672 viscosity values and comprising 443 ILs was collated from 204 different literature sources. Using this data set, a reliable group contribution method has been developed. The method employs a total of 46 sub-structures in addition to the temperature to predict the viscosity of ILs. In order to differentiate the effects of the anion and cation on the viscosity of ILs, 24 sub-structures related to the chemical structure of anions, and 22 sub-structures related to the chemical structure of cations were implemented. The proposed model produces a low average relative deviation (AARD) of less than 6.4% taking into consideration all 1672 experimental data values.
Original languageEnglish
JournalChemical Engineering Science
Publication date2012
Volume80
Pages326-333
ISSN0009-2509
DOIs
StatePublished

Bibliographical note

Highlights:
- A data set consisting of 1672 viscosity values and comprising 443 ILs was collated from the literature.
- A reliable group contribution method has been developed using this dataset.
- The method employs a total of 46 sub-structures in addition to the temperature to predict the viscosity of ILs.
- Twenty four sub-structures related to anions, and 22 sub-structures related cations were implemented.
- The model produces very encouraging results.

CitationsWeb of Science® Times Cited: 7

Keywords

  • Viscosity, Ionic liquids, Group contribution, Model, Database, Estimation
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