Journal
CATALYSIS LETTERS
Volume 142, Issue 3, Pages 352-359Publisher
SPRINGER
DOI: 10.1007/s10562-012-0776-6
Keywords
Transesterification; Biodiesel; Heterogeneous catalyst; Vegetable oil
Categories
Funding
- National Science Foundation of China [21076062]
- Program for Innovative Research Team in Universities of Henan Province in China [2012IRTSTHN009]
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An effective heterogeneous catalyst, CaxMg2-xO2, was prepared and tested for soybean oil transesterification with methanol. The catalysts were characterized by using X-ray diffraction , Fourier transform infrared spectra, thermo gravimetric and differential thermal analysis , and Hammett indicator method. The catalyst with Ca/Mg ratio of 1.0 and calcined at 800 A degrees C exhibited high catalytic activities. Under the suitable transesterification conditions (methanol/oil ratio 12:1, catalyst loading 6 wt%, reaction time 5 h, at reflux of methanol), the oil conversion of 91.3% could be achieved. The catalyst can be easily recovered and reused without significant deactivation.
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