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Use of Isomerization and Hydroisomerization Reactions to Improve the Cold Flow Properties of Vegetable Oil Based Biodiesel

Author

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  • Stephen J. Reaume

    (Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T1Z3, Canada)

  • Naoko Ellis

    (Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T1Z3, Canada)

Abstract

Biodiesel is a promising alternative to petroleum diesel with the potential to reduce overall net CO 2 emissions. However, the high cloud point of biodiesel must be reduced when used in cold climates. We report on the use of isomerization and hydroisomerization reactions to reduce the cloud point of eight different fats and oils. Isomerization was carried out at 260 °C and 1.5 MPa H 2 pressure utilizing beta zeolite catalyst, while hydroisomerization was carried out at 300 °C and 4.0 MPa H 2 pressure utilizing 0.5 wt % Pt-doped beta zeolite catalyst. Reaction products were tested for cloud point and flow properties, in addition to catalyst reusability and energy requirements. Results showed that high unsaturated fatty acid biodiesels increased in cloud point, due to the hydrogenation side reaction. In contrast, low unsaturated fatty acid biodiesels yielded cloud point reductions and overall improvement in the flow properties. A maximum cloud point reduction of 12.9 °C was observed with coconut oil as the starting material. Results of the study have shown that branching can reduce the cloud point of low unsaturated fatty acid content biodiesel.

Suggested Citation

  • Stephen J. Reaume & Naoko Ellis, 2013. "Use of Isomerization and Hydroisomerization Reactions to Improve the Cold Flow Properties of Vegetable Oil Based Biodiesel," Energies, MDPI, vol. 6(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:6:y:2013:i:2:p:619-633:d:23191
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    Citations

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    Cited by:

    1. Ho, Calvin K. & McAuley, Kimberley B. & Peppley, Brant A., 2019. "Biolubricants through renewable hydrocarbons: A perspective for new opportunities," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    2. Sierra-Cantor, Jonathan Fabián & Guerrero-Fajardo, Carlos Alberto, 2017. "Methods for improving the cold flow properties of biodiesel with high saturated fatty acids content: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 774-790.
    3. Eugenia Guadalupe Ortiz Lechuga & Mauro Rodríguez Zúñiga & Katiushka Arévalo Niño, 2020. "Efficiency Evaluation on the Influence of Washing Methods for Biodiesel Produced from High Free Fatty Acid Waste Vegetable Oils through Selected Quality Parameters," Energies, MDPI, vol. 13(23), pages 1-14, November.
    4. Maghrebi, R. & Buffi, M. & Bondioli, P. & Chiaramonti, D., 2021. "Isomerization of long-chain fatty acids and long-chain hydrocarbons: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 149(C).
    5. Shanmugam Palanisamy & Börje Sten Gevert & Pranav Sankaran & Kannan Kandasamy, 2019. "Produce Low Aromatic Contents with Enhanced Cold Properties of Hydrotreated Renewable Diesel Using Pt/Alumina-Beta-Zeolite: Reaction Path Studied via Monoaromatic Model Compound," Energies, MDPI, vol. 12(15), pages 1-15, July.

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