The isothermal compressibility and surface tension product of room temperature ionic liquids

Yizhak Marcus

doi:10.1016/j.jct.2018.05.002

The isothermal compressibility and surface tension product of room temperature ionic liquids

Yizhak Marcus

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The isothermal compressibilities, κ_T, and surface tensions, σ of room temperature ionic liquids (RTILs) were obtained from the literature. The products, κ_Tσ were compared, in analogy with high-melting ionic liquids (molten salts) and liquid metals, with expectations from the scaled particle theory, the correlation lengths, and the dependence on the cohesive energy density, but poor agreement was found. This behavior is ascribed to the ‘loose’ packing of the ions in the RTILs, due to the large, generally non-spherical ions making up these ionic liquids.

Original language	English
Pages (from-to)	149-152
Number of pages	4
Journal	Journal of Chemical Thermodynamics
Volume	124
DOIs	https://doi.org/10.1016/j.jct.2018.05.002
State	Published - Sep 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Cohesive energy density
Internal pressure
Isothermal compressibility
Room temperature ionic liquids
Surface tension

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10.1016/j.jct.2018.05.002

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title = "The isothermal compressibility and surface tension product of room temperature ionic liquids",

abstract = "The isothermal compressibilities, κT, and surface tensions, σ of room temperature ionic liquids (RTILs) were obtained from the literature. The products, κTσ were compared, in analogy with high-melting ionic liquids (molten salts) and liquid metals, with expectations from the scaled particle theory, the correlation lengths, and the dependence on the cohesive energy density, but poor agreement was found. This behavior is ascribed to the {\textquoteleft}loose{\textquoteright} packing of the ions in the RTILs, due to the large, generally non-spherical ions making up these ionic liquids.",

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doi = "10.1016/j.jct.2018.05.002",

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AB - The isothermal compressibilities, κT, and surface tensions, σ of room temperature ionic liquids (RTILs) were obtained from the literature. The products, κTσ were compared, in analogy with high-melting ionic liquids (molten salts) and liquid metals, with expectations from the scaled particle theory, the correlation lengths, and the dependence on the cohesive energy density, but poor agreement was found. This behavior is ascribed to the ‘loose’ packing of the ions in the RTILs, due to the large, generally non-spherical ions making up these ionic liquids.

KW - Cohesive energy density

KW - Internal pressure

KW - Isothermal compressibility

KW - Room temperature ionic liquids

KW - Surface tension

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JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

ER -

The isothermal compressibility and surface tension product of room temperature ionic liquids

Abstract

Bibliographical note

Keywords

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