Density and Viscosity of Binary Systems Containing (Linseed or Corn) Oil, (Linseed or Corn) Biodiesel and Diesel

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• 作者：Carlos A. Nogueira Jr. ; Victor M. Nogueira ; Diego F. Santiago ; Filipe A. Machado ; Fabiano A. N. Fernandes ; R铆lvia S. Santiago-Aguiar ; Hosiberto B. de Sant鈥橝na
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：November 12, 2015
• 年：2015
• 卷：60
• 期：11
• 页码：3120-3131
• 全文大小：484K
• ISSN：1520-5134

文摘

This work presents density (蟻) and dynamic viscosity (畏) data and correlations for binary systems containing (linseed or corn) oil, (linseed or corn) biodiesel and petroleum diesel at T = 293.15 K to 333.15 K in steps of 10 K for the linseed system and T = 293.15 K to 373.15 K in steps of 20 K for the corn system and atmospheric pressure. Density data were adjusted by a proposed function showing a second-order behavior with mole fraction (x) and a linear behavior with temperature. Viscosity data were adjusted to an equation with temperature (T) and mass fraction (w) as independent variables with an exponential dependence of the inverse of temperature and proportional dependence with mass fraction. All correlations presented good agreement to experimental data based on the R² and chi-square (蠂²) statistical analyses. The absolute average error (AAE) was calculated to evaluate the accuracy of predictive models used to estimate density and viscosity for all five pseudopure compounds. Isobaric expansion (伪_p) and excess Gibbs free energy of activation of viscous flow (螖G^E) were derived by measured properties. A new correlation was proposed for 螖G^E as a function of temperature and mole fraction.