Synthesis of biodiesel from acidified soybean soapstock using a lignin-derived carbonaceous catalyst
| 论文编号: | |||||||||
| 作者: | Guo F | ||||||||
| 刊物名称: | Applied Energy | ||||||||
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| 论文题目英文: | Synthesis of biodiesel from acidified soybean soapstock using a lignin-derived carbonaceous catalyst | ||||||||
| 年: | Apr 2012 | ||||||||
| 卷: | online | ||||||||
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| 联系作者: | Liu ZL | ||||||||
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| 影响因子: | 3.915 | ||||||||
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| 摘要: | Biodiesel was produced from acidified soybean soapstocks by using lignin-derived carbonaceous catalyst (LCC). LCC was a solid acidic catalyst prepared by direct sulfonation of residual lignin from Xanthoceras sorbifolia Bunge hulls. The textural properties of the catalyst were characterized by 13C MAS NMR, X-ray diffraction, FT-IR, elemental analysis and BET surface area measurement. When 7 wt.% of LCC was used in the esterification, the maximum free fatty acids (FFAs) conversion (above 97%) could be achieved at a molar ratio of methanol/oil of 1:9 and a reaction temperature of 70 °C for 5 h. A comparison of catalytic activity between sulfuric acid and LCC revealed that LCC performed 3.5 times higher activity than sulfuric acid with the equivalent active group ( Highlights► Lignin-derived carbonaceous catalyst was firstly synthesized for biodiesel synthesis. ► Active sites are linked to amorphous structure by the form of C | ||||||||
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SO3H). Additionally, LCC could be reused at least three times with high FFAs conversion (>80%).
