Biodiesel production from refined sunflower oil over Ca–Mg–Al catalysts: Effect of the composition and the thermal treatment

Eliane Dahdah, Jane Estephane, Reem Haydar, Yara Youssef, Bilal El Khoury, Cedric Gennequin, Antoine Aboukaïs, Edmond Abi-Aad and Samer Aouad

Renewable Energy, 2020, vol. 146, issue C, 1242-1248

Abstract: Different Ca–Mg–Al catalysts were prepared by the hydrotalcite route using co-precipitation and impregnation techniques. The effect of thermal treatment was studied and the obtained mixed oxides were characterized by X-ray diffraction, N2 adsorption-desorption and CO2-temperature programmed desorption. Catalysts were then tested in the transesterification of sunflower oil. The catalyst that showed the best catalytic performance was an uncalcined Mg4Al2 support impregnated with 40 wt% of calcium followed by a calcination at 600 °C (Ca600/Mg4Al2HT). Optimum conditions for biodiesel production over this catalyst were a reaction time of 6 h, a catalyst to oil ratio of 2.5 wt%, a 15:1 methanol to oil molar ratio, a stirring rate of 400 rpm and a temperature of 60 °C giving a final FAME yield of 95%.

Keywords: Biodiesel; Transesterification; Ca–Mg–Al; Catalyst; Vegetable oil; Hydrotalcite (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:146:y:2020:i:c:p:1242-1248

DOI: 10.1016/j.renene.2019.06.171

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