کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
215071 | 1426217 | 2016 | 7 صفحه PDF | دانلود رایگان |
• D12 of isopropanol + n-heptane and isobutanol + n-heptane were measured.
• Effect of T, w and M of the solute on D12 were analyzed.
• A new correlation is proposed for the experimental data.
The mutual diffusion coefficients of isopropanol + n-heptane and isobutanol + n-heptane were measured at different concentrations and in the temperature range from (283.15 to 323.15) K. The measurements were carried out using a digital holographic interferometry system. For all the mixtures investigated, the mutual diffusion coefficient increases as the temperature increases. At the same concentration and temperature, the mutual diffusion coefficients of isobutanol + n-heptane were lower than those of isopropanol + n-heptane due to the fact that the molecular weight of isobutanol is larger than that of isopropanol. A new correlation is proposed for the mutual diffusion coefficients of isopropanol + n-heptane and isobutanol + n-heptane. The absolute average relative deviation between the correlation and experiment is less than 1.90%.
Mutual diffusion coefficients of isopropanol + n-heptane as a function of mass fraction of isopropanol.Figure optionsDownload as PowerPoint slide
Journal: The Journal of Chemical Thermodynamics - Volume 96, May 2016, Pages 127–133