期刊
FUEL
卷 241, 期 -, 页码 311-318出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2018.12.074
关键词
Biodiesel; Extruded catalysts; Sunflower oil; Ethanolic route
资金
- Program of the Madrid Community AlcCones, Spain [S2013/MAE-2985]
- Brazilian agency: Carlos Chagas Filho Research Foundation of the Rio de Janeiro State (FAPERJ) [E-26/210.508/2014]
- Brazilian agency: National Council for Scientific and Technological Development (CNPq) [165577/2013-14, 311942/2015-6]
Catalytic biodiesel production from sunflower oil and ethanol using K2CO3/gamma-Al2O3 in different configurations has been studied. To prepare the catalysts, boehmite was extruded with the aid of a binder and different percentages of K2CO3 active phase (15-45%) impregnated on the supports for comparative purposes. The transesterification reactions were carried out during 4 h using 5 wt% of the catalyst and the effects of oil: alcohol molar ratio and temperature were investigated to improve biodiesel formation. The best result (99.3% conversion) was obtained when 35% K2CO3/65% gamma-Al2O3 hollow cylinder catalyst was used at 80 degrees C and 1:12 oil: ethanol molar ratio, showing their potential as promising alternative to conventional homogeneous catalytic systems used for biodiesel production at industrial scale.
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