Sulfamic acid: An efficient acid catalyst for esterification of FFA

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• 作者：Marcelo G. Montes D&rsquo ; Oca ; ^{dqmdoca@furg.br} ; Rafael Marinho Soares ; Renata Rodrigues de Moura ; Viní ; cius de Freitas Granjã ; o
• 关键词：FAAEs ; Green methodology ; Ethyl ricinoleate ; Biodiesel
• 刊名：Fuel
• 出版年：2012
• 期刊代码：33_00162361
• 类别：ce
• 出版时间：July, 2012
• 卷：97
• 期：Complete
• 页码：884-886
• 文件大小：222 K

摘要

Esterification is one of the most fundamental reactions in organic chemistry. It has a great application in both laboratory work and industrial processes on account of its versatility. In this study sulfamic acid (H₂NSO₃H, SA) was used as an efficient catalyst for the synthesis of fatty acid methyl and ethyl esters (FAEEs and FAMEs) under different conditions (fatty acid type, molar ratio, temperature, and%catalyst). Esterification using methanol and ethanol resulted in a higher fatty acid alkyl ester yield. The best result was obtained with ethanol, which yielded 91.2-97.7%FAEEs. However, in the same conditions the FAMEs were obtained with lower yields. These results demonstrate that this green methodology has high potential for the synthesis of fatty acid alkyl esters.