期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 20, 页码 9818-9822出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.08.001
关键词
Heterogeneous acid catalyst; Biodiesel; Transesterification; Soybean oil
资金
- National Natural Science Foundation of China [21076062]
The transesterification of soybean oil with methanol was carried out, to produce biodiesel, over silica-bonded N-propyl sulfamic acid in a heterogeneous manner. Results showed that a maximum conversion of 90.5% was achieved using a 1:20 M ratio of soybean oil to methanol and a catalyst amount of 7.5 wt.% at 423 K for 60 h. It was found that the free fatty acid (FFA) and water present in the feedstock had no significant influence on the catalytic activity to the transesterification reaction. Besides, the catalyst also showed activities towards the esterification reaction of FFAs, in terms of the FFA conversion of 95.6% at 423 K for 30 h. Furthermore, the catalyst could be recovered with a better reusability. (C) 2011 Elsevier Ltd. All rights reserved.
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