کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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64907 | 48374 | 2015 | 8 صفحه PDF | دانلود رایگان |
• The Cs–Ca/TiO2–SiO2 nanocatalysts is efficient catalyst for biodiesel production.
• Viscosity, density and refractive index decreases by an increase in biodiesel yield.
• The best operational conditions were the CH3OH/oil = 12/1 at 60 °C for 2 h.
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 500 rpm for 2 h. 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.
Figure optionsDownload high-quality image (147 K)Download as PowerPoint slideCs–Ca/TiO2–SiO2 nanocatalysts were prepared. The activity of optimal catalyst was studied at different operational conditions. Viscosity and refractive index are recommended as reliable physical properties to estimate of biodiesel.
Journal: Journal of Molecular Catalysis A: Chemical - Volumes 404–405, August 2015, Pages 131–138