期刊
BIORESOURCE TECHNOLOGY
卷 100, 期 20, 页码 4690-4696出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.04.057
关键词
Biodiesel; Methanolysis; Heterogeneous catalyst; Alumina/silica; K2CO3
资金
- Ministry of Science of the Republic of Serbia [TR 19062, 166001]
The new type of catalyst for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as active component on alumina/silica support was synthesized using sol-gel method. Corresponding catalyst (xerogel) was prepared by 12 h drying the wet gel in air at 300 degrees C, 600 degrees C or 1000 degrees C at atmospheric pressure. The catalysts activity in the methanolysis of sunflower oil was compared to the activity of the pure K2CO3. The effects of various reaction variables on the yield of FAME were investigated. It was found that the temperature of 120 degrees C and methanol to oil molar ratio of 15: 1, are optimal conditions for FAME synthesis with synthesized catalyst. Repeated use of same amount of catalyst indicated that effect of potassium leaching obviously existed leading to decrease of catalyst activity. (C) 2009 Elsevier Ltd. All rights reserved.
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