TY  - JOUR
EP  - 258
SN  - 01677322
PB  - Elsevier B.V.
N1  - cited By 23
SP  - 250
TI  - Measurement and correlation of the physical properties of aqueous solutions of ammonium based ionic liquids
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040685594&doi=10.1016%2fj.molliq.2018.01.040&partnerID=40&md5=b4df5f6d6c446135b9b64cbe3b432a21
JF  - Journal of Molecular Liquids
A1  - Kartikawati, N.A.
A1  - Safdar, R.
A1  - Lal, B.
A1  - Mutalib, M.I.B.A.
A1  - Shariff, A.M.
VL  - 253
Y1  - 2018///
N2  - In this study, thermo physical properties such as density, viscosity, refractive index and surface tension of aqueous solutions of tetramethylammonium hydroxide (TMAOH), tetraethylammonium hydroxide (TEAOH), tetrapropylammonium hydroxide (TPAOH) and tetrabutylammonium hydroxide (TBAOH) was investigated as a function of temperature. These properties were measured in temperatures ranging from 298.15 to 333.15 K and the temperature was increased by an interval of 5 K from 298.15 K and after 303.15 K, it was increased by an interval of 10 K, while the concentrations of all the aqueous solutions were changed from 2.5 to 30 mass percent. The results revealed that the measured properties of all aqueous ILs are inversely related to temperature, while the increase in concentration had different effects on these properties. In the case of density, an increase in the concentration of ILs TMAOH and TEAOH increased their density, while the increase in the concentration of TPAOH and TBAOH decreased their density. On the other hand, the viscosities and refractive indices of all aqueous ILs increased with an increase in concentration, but the surface tensions decreased with the increase in concentration. The derived properties including thermal expansion and excess molar volume of all the aqueous ILs were determined using density data. The thermal expansion data showed an increasing trend with an increase in the temperatures and concentrations of ILs whereas the negative values of excess molar volumes decreased with an increase in temperatures. The correlation of thermo physical properties with temperatures exhibits a good agreement between experimental and predicted values. © 2018
KW  - Binary mixtures; Density (specific gravity); Expansion; Ionic liquids; Light polarization; Physical properties; Refractive index; Solutions; Surface tension; Thermal expansion; Viscosity; Volume measurement
KW  -  Derived properties; Excess molar volumes; Measured properties; Tetrabutylammonium hydroxides; Tetraethylammonium; Tetramethyl ammonium hydroxide; Tetrapropylammonium hydroxide; Thermo-physical property
KW  -  Density of liquids
ID  - scholars10481
ER  -