eprintid: 8425
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/84/25
datestamp: 2023-11-09 16:20:19
lastmod: 2023-11-09 16:20:19
status_changed: 2023-11-09 16:12:37
type: article
metadata_visibility: show
creators_name: Al Kaisy, G.M.J.
creators_name: Abdul Mutalib, M.I.
creators_name: Rao, T.V.V.L.N.
title: Novel halogen free hydrophobic trioctylammonium-based protic ionic liquids with carboxylate anions: Synthesis, characterization, and thermophysical properties
ispublished: pub
keywords: Atmospheric pressure; Carboxylation; Differential scanning calorimetry; Entropy; Fourier transform infrared spectroscopy; Hydrophobicity; Ionic liquids; Ions; Liquids; Negative ions; Nuclear magnetic resonance spectroscopy; Refractive index; Surface tension; Thermal expansion; Thermodynamic properties; Viscosity, Carboxylate anions; Isobaric thermal expansions; Lattice potential energy; Onset decomposition temperatures; Protic ionic liquids; Thermogravimetric analyzers; Trioctylammonium; Vogel-Fulcher-Tamman equations, Atmospheric temperature
note: cited By 12
abstract: A three novel hydrophobic trioctylammonium-based protic ionic liquids (PILs) with 3,4-dimethylbenzoate, salicylate, and nonanedioate anions were synthesized and their structure were confirmed using nuclear magnetic resonance, elemental analysis and Fourier transform infrared spectroscopy. The three synthesized PILs were liquids at room temperature. The thermal properties were determined using thermogravimetric analyzer and differential scanning calorimetry. Density, viscosity, surface tension, and refractive index were measured for the synthesized PILs at temperature between 293.15 and 363.15 K at atmospheric pressure and as expected, it was found to decrease with increasing temperature. The density measurements were correlated as a linear function of temperature, and the viscosities were fitted to a Vogel-Fulcher-Tamman equation. The density measured values were used to calculate the molar volume, molecular volume, standard entropy, lattice potential energy and the isobaric thermal expansion coefficients, whilst the surface excess energy and entropy were calculated using the measured surface tension data. The di-cationic nonanedioate PIL was found to have higher viscosity, surface tension, heat capacity and onset decomposition temperature. © 2017 Elsevier B.V.
date: 2017
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024103659&doi=10.1016%2fj.molliq.2017.07.037&partnerID=40&md5=0946ada94d892e5421fca53c1526480c
id_number: 10.1016/j.molliq.2017.07.037
full_text_status: none
publication: Journal of Molecular Liquids
volume: 242
pagerange: 349-356
refereed: TRUE
issn: 01677322
citation:   Al Kaisy, G.M.J. and Abdul Mutalib, M.I. and Rao, T.V.V.L.N.  (2017) Novel halogen free hydrophobic trioctylammonium-based protic ionic liquids with carboxylate anions: Synthesis, characterization, and thermophysical properties.  Journal of Molecular Liquids, 242.  pp. 349-356.  ISSN 01677322