Excess molar volumes, viscosity, refractive index, and Gibbs energy of activation of binary biodiesel plus benzene, and biodiesel plus toluene mixtures at 298.15 and 303.15 K
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, cilt.82, sa.13, ss.2260-2268, 2008 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 82 Sayı: 13
- Basım Tarihi: 2008
- Doi Numarası: 10.1134/s0036024408130189
- Dergi Adı: RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2260-2268
- Gazi Üniversitesi Adresli: Evet
Özet
Excess molar volumes (VE ), viscosities, refractive index, and Gibbs energies were evaluated for binary biodiesel + benzene and toluene mixtures at 298.15 and 303.15 K. The excess molar volumes VE were determined from density, while the excess Gibbs free energy of activation G*Ewas calculated from viscosity deviation Delta eta. The excess molar volume (V E), viscosity deviation (Delta eta), and excess Gibbs energy of activation (G*E) were fitted to the Redlich-Kister polynomial equation to derive binary coefficients and estimate the standard deviations between the experimental data and calculation results. All mixtures showed positive V E values obviously caused by increased physical interactions between biodiesel and the organic solvents.