کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
217173 | 1426318 | 2007 | 12 صفحه PDF | دانلود رایگان |
The densities and speeds of sound of (cyclohexane + nonane) were measured at four temperatures from 298.15 K to 328.15 K, and the respective values of excess volumes VmE and adiabatic compressibility were calculated. Thereafter, the densities for the last system were measured at elevated pressures (0.1 to 40) MPa at four temperatures over the range 298.15 K to 328.15 K with a high-pressure apparatus. The high-pressure density data were fitted to the Tait equation and the isothermal compressibilities were calculated with a novel procedure with the aid of this equation. The low- and high-pressure values of VmE calculated from the density data show that the deviations from ideal behaviour in the system decrease slightly as the temperature and pressure are raised. The VmE data were fitted to the fourth-order Redlich–Kister equation, with the maximum likelihood principle being applied for the determination of the adjustable parameters.
Journal: The Journal of Chemical Thermodynamics - Volume 39, Issue 12, December 2007, Pages 1637–1648