TY  - JOUR
N1  - cited By 55
TI  - Densities, refractive indices and excess molar volumes for binary mixtures of protic ionic liquids with methanol at T = 293.15 to 313.15 K
IS  - 3
JF  - Journal of Molecular Liquids
SN  - 01677322
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952630435&doi=10.1016%2fj.molliq.2011.01.005&partnerID=40&md5=dbb0c12f8033919b81125917d666fff3
EP  - 219
N2  - Densities and refractive indices for the binary mixtures involving four different Protic Ionic Liquids (PILs) namely (2-Hydroxyethanaminium formate HEF + methanol), (2-Hydroxyethanaminium acetate HEA + methanol), (2-Hydroxyethanaminium propionate HEP + methanol), and (2-Hydroxyethanaminium lactate HEL + methanol) have been measured at the temperature range from 293.15 to 313.15 K and at atmospheric pressure. The excess molar volumes V E, refractive index deviations Î?nD for these binary mixtures were calculated and correlated using Redlich-Kister equation. The coefficients of thermal expansion α, were also calculated from these experimental data. The values of VE are negative for the entire mole fraction range covered for all these binary mixtures and increased with temperature, whereas the values of Î?nD are positive and also increased with temperature. The measured refractive indices were compared with those predicted using the Lorentz-Lorenz, Gladstone-Dale, and Eykman equations and a satisfactory agreement was found for all the binary systems (PILs + methanol) studied in the present work. © 2011 Elsevier B.V.
ID  - scholars2217
AV  - none
Y1  - 2011///
KW  - Binary systems; Coefficients of thermal expansions; Density; Excess molar volumes; Experimental data; Lorentz; Mole fraction; Protic ionic liquids; Redlich- Kister equation; Temperature range
KW  -  Atmospheric pressure; Atmospheric temperature; Density of liquids; Ionic liquids; Ions; Light refraction; Methanol; Organic polymers; Refractive index; Refractometers; Thermal expansion; Volatile fatty acids; Volume measurement
KW  -  Binary mixtures
A1  - Kurnia, K.A.
A1  - Taib, M.M.
A1  - Abdul Mutalib, M.I.
A1  - Murugesan, T.
SP  - 211
VL  - 159
ER  -