Journal
CATALYSIS LETTERS
Volume 131, Issue 3-4, Pages 574-578Publisher
SPRINGER
DOI: 10.1007/s10562-009-9972-4
Keywords
Nanosized solid-base catalyst; Coprecipitation method; Transesterification reaction; Biodiesel production
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Funding
- National High Technology Research and Development Program of China [2007AA100703]
- Hubei Province Natural Science Fundation [2008CDB040]
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A mesoporous nanosized KF/CaO-MgO catalyst was prepared by coprecipitation method, and was characterized by transmission electron microscopy, X-ray diffraction, nitrogen adsorption and laser confocal Raman microspectroscopy. The catalyst possessed a unique mesoporous structure with pore size of ca. 34 nm and the average particle size of ca. 35 nm. In comparison with CaO and KF/CaO catalyst, the as-prepared catalyst exhibited higher catalytic activity, higher resistance to saponification, and better acidoresistance (10 mg KOH/g oil). The factors affecting on transesterification were also investigated, and a desired biodiesel yield over 95% was obtained under an optimal preparation conditions.
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