Effects of water on the esterification of free fatty acids by acid catalysts
文献类型：期刊论文
| 作者 | Park, Ji-Yeon ; Wang, Zhong-Ming ; Kim, Deog-Keun ; Lee, Jin-Suk |
| 刊名 | renewable energy
 |
| 出版日期 | 2010-03 |
| 卷号 | 35期号:3页码:5,614-618 |
| 关键词 | Soapstock Esterification Water production Amberlyst-15 Sulfuric acid RESPONSE-SURFACE METHODOLOGY BIODIESEL PRODUCTION DIESEL FUEL HIGH FFA OIL METHANOL OPTIMIZATION |
| ISSN号 | 0960-1481 |
| 通讯作者 | bmjslee@kier.re.kr |
| 中文摘要 | to maximize the production of biodiesel from soybean soapstock, the effects of water on the esterification of high-ffa (free fatty acid) oils were investigated. oleic acid and high acid acid oil (haao) were esterified by reaction with methanol in the presence of amberlyst-15 as a heterogeneous catalyst or sulfuric acid as a homogeneous catalyst. the yield of fatty acid methyl ester (fame) was studied at oil to methanol molar ratios of 1:3 and 1:6 and reaction temperatures of 60 and 80 degrees c. the rate of esterification of oleic acid significantly decreased as the initial water content increased to 20% of the oil. the activity of amberlyst-15 decreased more rapidly than that of sulfuric acid, due to the direct poisoning of acid sites by water. esterification using sulfuric acid was not affected by water until there was a 5% water addition at a 1:6 molar ratio of oil to methanol. fame content of haao prepared from soapstock rapidly increased for the first 30 min of esterification. following the 30-min mark, the rate of fame production decreased significantly due to the accumulation of water. when methanol and amberlyst-15 were removed from the haao after 30 min of esterification and fresh methanol and a catalyst were added, the time required to reach 85% fame content was reduced from 6 h to 1.8 h. (c) 2009 elsevier ltd. all rights reserved. |
| 学科主题 | energy & fuels |
| 收录类别 | SCI ; EI |
| 原文出处 | https://dx.doi.org/10.1016/j.renene.2009.08.007 |
| 语种 | 英语 |
| 公开日期 | 2014-12-24 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/8516]  |
| 专题 | 中国科学院广州能源研究所 |
| 推荐引用方式 GB/T 7714 | Park, Ji-Yeon,Wang, Zhong-Ming,Kim, Deog-Keun,et al. Effects of water on the esterification of free fatty acids by acid catalysts[J]. renewable energy,2010,35(3):5,614-618. |
| APA | Park, Ji-Yeon,Wang, Zhong-Ming,Kim, Deog-Keun,&Lee, Jin-Suk.(2010).Effects of water on the esterification of free fatty acids by acid catalysts.renewable energy,35(3),5,614-618. |
| MLA | Park, Ji-Yeon,et al."Effects of water on the esterification of free fatty acids by acid catalysts".renewable energy 35.3(2010):5,614-618. |
入库方式： OAI收割
来源：广州能源研究所
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