Unusual trend of viscosities and densities for four ionic liquids containing a tetraalkyl phosphonium cation and the anion bis (2, 4, 4-trimethylpentyl) phosphinate

Xiangyang Liu, Waheed Afzal, John M Prausnitz

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Abstract

Densities and viscosities are reported for three similar ionic liquids, all with anion bis(2,4,4-trimethylpentyl) phosphinate [TMPP]. The hydrocarbon chains attached to the phosphonium cation vary in length; the three cations are tetrabutylphosphonium [P4444], trimethyloctylphosphonium [P8111] and tributylmethylphosphonium [P1444]. Contrary to expectation, neither the densities nor the viscosities show a monotonic trend with the length of the hydrocarbon chains on the cation.
Original languageEnglish
Pages (from-to)122-126
Number of pages5
JournalThe Journal of Chemical Thermodynamics
Volume70
Early online date9 Oct 2013
DOIs
Publication statusPublished - Mar 2014

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Ionic Liquids
Ionic liquids
Anions
Cations
Negative ions
Positive ions
Viscosity
viscosity
Hydrocarbons
anions
trends
cations
liquids
hydrocarbons

Keywords

  • density
  • viscosity
  • ionic liquid
  • tetraalkyl phosphonium

Cite this

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title = "Unusual trend of viscosities and densities for four ionic liquids containing a tetraalkyl phosphonium cation and the anion bis (2, 4, 4-trimethylpentyl) phosphinate",
abstract = "Densities and viscosities are reported for three similar ionic liquids, all with anion bis(2,4,4-trimethylpentyl) phosphinate [TMPP]. The hydrocarbon chains attached to the phosphonium cation vary in length; the three cations are tetrabutylphosphonium [P4444], trimethyloctylphosphonium [P8111] and tributylmethylphosphonium [P1444]. Contrary to expectation, neither the densities nor the viscosities show a monotonic trend with the length of the hydrocarbon chains on the cation.",
keywords = "density, viscosity, ionic liquid, tetraalkyl phosphonium",
author = "Xiangyang Liu and Waheed Afzal and Prausnitz, {John M}",
year = "2014",
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doi = "10.1016/j.jct.2013.09.037",
language = "English",
volume = "70",
pages = "122--126",
journal = "The Journal of Chemical Thermodynamics",
issn = "0021-9614",
publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Unusual trend of viscosities and densities for four ionic liquids containing a tetraalkyl phosphonium cation and the anion bis (2, 4, 4-trimethylpentyl) phosphinate

AU - Liu, Xiangyang

AU - Afzal, Waheed

AU - Prausnitz, John M

PY - 2014/3

Y1 - 2014/3

N2 - Densities and viscosities are reported for three similar ionic liquids, all with anion bis(2,4,4-trimethylpentyl) phosphinate [TMPP]. The hydrocarbon chains attached to the phosphonium cation vary in length; the three cations are tetrabutylphosphonium [P4444], trimethyloctylphosphonium [P8111] and tributylmethylphosphonium [P1444]. Contrary to expectation, neither the densities nor the viscosities show a monotonic trend with the length of the hydrocarbon chains on the cation.

AB - Densities and viscosities are reported for three similar ionic liquids, all with anion bis(2,4,4-trimethylpentyl) phosphinate [TMPP]. The hydrocarbon chains attached to the phosphonium cation vary in length; the three cations are tetrabutylphosphonium [P4444], trimethyloctylphosphonium [P8111] and tributylmethylphosphonium [P1444]. Contrary to expectation, neither the densities nor the viscosities show a monotonic trend with the length of the hydrocarbon chains on the cation.

KW - density

KW - viscosity

KW - ionic liquid

KW - tetraalkyl phosphonium

U2 - 10.1016/j.jct.2013.09.037

DO - 10.1016/j.jct.2013.09.037

M3 - Article

VL - 70

SP - 122

EP - 126

JO - The Journal of Chemical Thermodynamics

JF - The Journal of Chemical Thermodynamics

SN - 0021-9614

ER -