Effect of Water on the Densities and Viscosities of Some Ionic Liquids Containing a Phosphonium Cation

Brian Yoo, Waheed Afzal, John M Prausnitz

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A small amount of water can significantly decrease the viscosity of an ionic liquid. From 25–80 ºC, densities and viscosities were measured for dilute solutions of water in six ionic liquids: trihexyltetradecylphosphonium bis (2,4,4-trimethylpentyl) phosphinate, trihexyltetradecylphosphonium dicyanamide, tributyltetradecylphosphonium dodecylbenzenesulfonate, 1-ethyl,3-methylimidazolium bis(triflouromethylsulfonyl)imide, methyltrioctylammonium bis(trifluoromethylsulfonyl)imide, and triisobutylmethylphosphonium tosylate. At 25 ºC, when the water content is about 1 wt. %, the viscosity of a phosphonium-based ionic liquid is reduced by nearly one order of magnitude.
Original languageEnglish
Pages (from-to)157-166
Number of pages10
JournalZeitschrift für Physikalische Chemie
Volume227
Issue number2-3
Publication statusPublished - 2013

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Ionic Liquids
Imides
Cations
Viscosity
Water
Water content

Keywords

  • Viscosity
  • Density
  • Water Content
  • Trihexyltetradecylphosphonium bis
  • Trihexyltetradecylphosphonium

Cite this

Effect of Water on the Densities and Viscosities of Some Ionic Liquids Containing a Phosphonium Cation. / Yoo, Brian; Afzal, Waheed; Prausnitz, John M.

In: Zeitschrift für Physikalische Chemie, Vol. 227, No. 2-3, 2013, p. 157-166.

Research output: Contribution to journalArticle

Yoo, Brian ; Afzal, Waheed ; Prausnitz, John M. / Effect of Water on the Densities and Viscosities of Some Ionic Liquids Containing a Phosphonium Cation. In: Zeitschrift für Physikalische Chemie. 2013 ; Vol. 227, No. 2-3. pp. 157-166.
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AB - A small amount of water can significantly decrease the viscosity of an ionic liquid. From 25–80 ºC, densities and viscosities were measured for dilute solutions of water in six ionic liquids: trihexyltetradecylphosphonium bis (2,4,4-trimethylpentyl) phosphinate, trihexyltetradecylphosphonium dicyanamide, tributyltetradecylphosphonium dodecylbenzenesulfonate, 1-ethyl,3-methylimidazolium bis(triflouromethylsulfonyl)imide, methyltrioctylammonium bis(trifluoromethylsulfonyl)imide, and triisobutylmethylphosphonium tosylate. At 25 ºC, when the water content is about 1 wt. %, the viscosity of a phosphonium-based ionic liquid is reduced by nearly one order of magnitude.

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KW - Trihexyltetradecylphosphonium

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