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首页> 外文期刊>Fuel >Synthesis of biodiesel from edible, non-edible and waste cooking oils via supercritical methyl acetate transesterifkation
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Synthesis of biodiesel from edible, non-edible and waste cooking oils via supercritical methyl acetate transesterifkation

机译：通过超临界乙酸甲酯的酯交换反应，由食用，非食用和废食用油合成生物柴油

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摘要

The use of methyl acetate instead of methanol for supercritical synthesis of glycerol-free biodiesel from vegetable oils is a new process and its study is very limited in the literature. In this work, it has been tested for the first time on three edible and non-edible oils with different fatty acid composition. The process was also applied to waste oil with higher free fatty acid (FFA) content. The results demonstrate that the oil composition does not significantly influence the biodiesel yield. The influence of temperature, pressure and molar ratio of reactants was studied. All the oils achieved complete conversion after 50 min at 345 ℃, 20 MPa with methyl acetate:oil molar ratio equal to 42:1. The obtained data also allowed calculating the apparent rate coefficients and activation energies. Eventually, some new information on the process was obtained. Thermal degradation of triacetin, which substitutes glycerol as the by-product of the transesterification reaction, was observed. Some indicative experiments were performed to understand the role of the acetic acid produced by FFA esterification.
机译：用乙酸甲酯代替甲醇从植物油中超临界合成无甘油的生物柴油是一个新的过程，其研究在文献中非常有限。在这项工作中，它已经首次在三种具有不同脂肪酸组成的食用和非食用油上进行了测试。该方法还适用于具有较高游离脂肪酸（FFA）含量的废油。结果表明，油的组成不会显着影响生物柴油的产量。研究了温度，压力和反应物摩尔比的影响。在345℃，20 MPa下50分钟后，乙酸甲酯：油的摩尔比等于42：1，所有油均实现了完全转化。获得的数据还允许计算表观速率系数和活化能。最终，获得了有关该过程的一些新信息。观察到甘油三乙酸甘油酯的热降解，甘油三乙酸甘油酯替代甘油作为酯交换反应的副产物。进行了一些指示性实验，以了解FFA酯化产生的乙酸的作用。

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  • 来源
    《Fuel》 |2010年第12期|p.3675-3682|共8页
  • 作者

    Pasquale Campanelli; Mauro Banchero; Luigi Manna;

  • 作者单位

    Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;

    rnDipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;

    rnDipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biodiesel; supercritical glycerol-free process; methyl acetate; triacetin; acetic acid;

    机译：生物柴油超临界无甘油工艺;乙酸甲酯三醋精;醋酸;

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