Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts

Tony Saba, Jane Estephane, Bilal El Khoury, Maroulla El Khoury, Mahmoud Khazma, Henri El Zakhem, Samer Aouad

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

ZSM5 zeolite was impregnated with different KOH loadings (15 wt.%, 25 wt.% and 35 wt.%) to prepare a series of KOH/ZSM5 catalysts. The catalysts were calcined at 500 °C for 3 h and then characterized by N2 adsorption–desorption and X-ray diffraction (XRD) techniques. The catalysts were tested in the transesterification reaction in a batch reactor at 60 °C and under atmospheric pressure. It was found that KOH/ZSM5 with 35 wt.% loading showed the best catalytic performance. The best reaction conditions in the presence of KOH/ZSM5 (35 wt.%) were determined while modifying the catalyst to oil ratio and the reaction time. The highest methyl ester yield (>95%) was obtained for a reaction time of 24 h, a catalyst to oil ratio of 18 wt.%, and a methanol to oil molar ratio of 12:1. The properties of produced biodiesel complied with the ASTM specifications. The catalytic stability test showed that 35KOH/ZSM5 was stable for 3 consecutive runs. Characterization of the spent catalyst indicated that a slight deactivation might be due to the leaching of potassium oxides active sites.
Original languageEnglish
Pages (from-to)301-306
Number of pages7
JournalRenewable Energy
Volume90
Early online date13 Jan 2016
DOIs
Publication statusPublished - May 2016

Fingerprint

Vegetable oils
Biodiesel
Catalysts
Transesterification
Batch reactors
Leaching
Atmospheric pressure
Potassium
Esters
Methanol
Specifications
X ray diffraction
Oxides
Oils

Keywords

  • Biodiesel
  • Transesterification
  • KOH
  • ZSM5
  • Reusability

Cite this

Saba, T., Estephane, J., El Khoury, B., El Khoury, M., Khazma, M., El Zakhem, H., & Aouad, S. (2016). Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts. Renewable Energy, 90, 301-306. https://doi.org/10.1016/j.renene.2016.01.009

Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts. / Saba, Tony; Estephane, Jane ; El Khoury, Bilal; El Khoury, Maroulla ; Khazma, Mahmoud ; El Zakhem, Henri; Aouad, Samer.

In: Renewable Energy, Vol. 90, 05.2016, p. 301-306.

Research output: Contribution to journalArticle

Saba, T, Estephane, J, El Khoury, B, El Khoury, M, Khazma, M, El Zakhem, H & Aouad, S 2016, 'Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts', Renewable Energy, vol. 90, pp. 301-306. https://doi.org/10.1016/j.renene.2016.01.009
Saba T, Estephane J, El Khoury B, El Khoury M, Khazma M, El Zakhem H et al. Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts. Renewable Energy. 2016 May;90:301-306. https://doi.org/10.1016/j.renene.2016.01.009
Saba, Tony ; Estephane, Jane ; El Khoury, Bilal ; El Khoury, Maroulla ; Khazma, Mahmoud ; El Zakhem, Henri ; Aouad, Samer. / Biodiesel production from refined sunflower vegetable oil over KOH/ZSM5 catalysts. In: Renewable Energy. 2016 ; Vol. 90. pp. 301-306.
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