Abstract
In this research work, the transestrification (biodiesel production) of blend refined vegetable oil over novel promoted Cs–Ca/TiO2–SiO2 nanocatalysts was investigated. The effects of different mass ratios of Ca/TiO2–SiO2, loading of Cs as a promoter, calcination conditions and different operational conditions on the catalytic performance of Cs–Ca/TiO2–SiO2 nanocatalysts were studied. The best operational conditions were the methanol/oil=12/1 at 60°C with mechanical stirring of 500rpm for 2h. Characterization of catalysts was carried out by using scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), temperature programmed desorption (TPD), Fourier transform-infrared spectroscopy (FT-IR) and N2 adsorption–desorption measurements methods. The maximum biodiesel yield of 98% was obtained by using the optimal Cs–Ca/TiO2–SiO2 nanocatalyst.
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