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Solid−Liquid Equilibria in Fatty Acid/Triglycerol Systems

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Department of Mechanical System Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan
Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
§ Environment Preservation Center, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
Cite this: J. Chem. Eng. Data 2011, 56, 4, 1613–1616
Publication Date (Web):March 11, 2011
https://doi.org/10.1021/je101092j
Copyright © 2011 American Chemical Society

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    Abstract

    Used for biofuel production, fatty acids and their corresponding triglycerols are stored in most plants. At room temperature, saturated fatty acids and their triglycerols are solid, whereas unsaturated fatty acids and their triglycerols are liquid. Solid−liquid equilibrium data were measured for various binary systems of fatty acids and their triglycerols by differential scanning calorimetry. The freezing temperatures from liquidus curves for the binary systems containing tripalmitine were higher than those for systems containing palmitic acid. At the eutectic point, the melting temperatures for binary systems containing tripalmitine or palmitic acid were similar. The liquidus curves from the solid−liquid equilibrium data were compared with the predicted values obtained by using the LLE-UNIFAC model, and good agreement between the experimental and calculated results was found.

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    18. Keisuke Fukui, Kouji Maeda, Hidetoshi Kuramochi. Melt crystallization for refinement of triolein and palmitic acid mixture as a model waste oil for biodiesel fuel production. Journal of Crystal Growth 2013, 373 , 102-105. https://doi.org/10.1016/j.jcrysgro.2012.11.012

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