Application of Prigogine Flory Patterson theory to excess molar volume of mixtures of 1-butyl-3-methylimidazolium ionic liquids with N-methyl-2-pyrrolidinone
The densities of two binary mixtures formed by 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] and 1-butyl-3-methy limidazolium hexafluorophosphate [bmim][PF6] with compound N-methyl-2-pyrrolidinone have been determined over the full range of composition and range of temperature from (298.15 to 313.15) K and at atmospheric pressure using a vibrating-tube densimeter (DMA4500). Excess molar volumes, , have been obtained from these experimental results, and been fitted by the fourth-order Redlich Kister equation. From the experimental results, partial molar volumes, apparent molar volume and partial molar volumes at infinite dilution were calculated over the whole composition range. Our results show that decreases slightly when temperature increases in the systems studied. The experimental results have been used to test the applicability of the Prigogine Flory Patterson (PFP) theory. The results have been interpreted in terms of ion dipole interactions and structural factors of the ionic liquid and these organic molecular liquids.
Compounds
#
Formula
Name
1
C8H15BF4N2
1-butyl-3-methylimidazolium tetrafluoroborate
2
C8H15F6N2P
1-butyl-3-methylimidazolium hexafluorophosphate
3
C5H9NO
N-methylpyrrolidone
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.