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首页> 外文期刊>Energy >Process intensification of transesterification for biodiesel production from palm oil: Microwave irradiation on transesterification reaction catalyzed by acidic imidazolium ionic liquids
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Process intensification of transesterification for biodiesel production from palm oil: Microwave irradiation on transesterification reaction catalyzed by acidic imidazolium ionic liquids

机译：棕榈油生产生物柴油的酯交换反应过程的强化：酸性咪唑鎓离子液体催化的酯交换反应微波辐射

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摘要

In the study, to improve the efficiency of acid-catalyzed biodiesel production process, three acidic imidazolium ionic liquids were synthesized and employed to the production of biodiesel from palm oil under microwave irradiation. The prepared ionic liquids were characterized by NMR, FT-IR and TG-DTG. Among the three ionic liquids, ([HSO3-BMIM]HSO4) was proved to be the most suitable catalyst because of the excellent catalytic performance. Single factor experiments and response surface methodology (RSM) were conducted to investigate various reaction conditions to obtain the optimal condition, and the results indicated that ionic liquid dosage was the most significant variable. A maximal yield of 98.93% was obtained while mole ratio of methanol to oil, ionic liquid dosage, microwave power and reaction time were 11:1, 9.17%, 168 W and 6.43 h, respectively. We also studied the kinetic of transesterification under microwave irradiation, which could be appropriately expressed by the pseudo-first-order kinetic model. Compared with conventional experiments, microwave irradiation can be regarded as an efficient process intensification method for biodiesel production which has the capacity to shorten reaction time and save energy up to more than 44%. In addition, the ionic liquid catalyst showed excellent operational stability with biodiesel yield of 84.76% after six cycles. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在研究中，为了提高酸催化生物柴油的生产效率，合成了三种酸性咪唑鎓离子液体，并用于在微波辐射下从棕榈油生产生物柴油。所制备的离子液体通过NMR，FT-IR和TG-DTG表征。在三种离子液体中，（[HSO3-BMIM] HSO4）由于其优异的催化性能被证明是最合适的催化剂。进行了单因素实验和响应面法（RSM）研究各种反应条件以获得最佳条件，结果表明离子液体用量是最大的变量。当甲醇与油的摩尔比，离子液体剂量，微波功率和反应时间分别为11：1、9.17％，168 W和6.43 h时，获得最大产率98.93％。我们还研究了微波辐射下酯交换反应的动力学，可以用拟一级动力学模型适当地表达它。与常规实验相比，微波辐照可以看作是一种有效的生物柴油生产过程强化方法，具有缩短反应时间，节省能量高达44％以上的能力。另外，离子液体催化剂在六个循环后显示出优异的操作稳定性，生物柴油产率为84.76％。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy》 |2018年第1期|957-967|共11页
  • 作者

    Ding Hui; Ye Wei; Wang Yongqiang; Wang Xianqin; Li Lujun; Liu Dan; Gui Jianzhou; Song Chunfeng; Ji Na;

  • 作者单位

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

    Tianjin Polytech Univ, Sch Environm & Chem Engn, Tianjin 300387, Peoples R China;

    Tianjin Polytech Univ, Sch Environm & Chem Engn, Tianjin 300387, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Biodiesel; Transesterification; Imidazolium ionic liquid; Microwave irradiation; Process intensification;

    机译：生物柴油;酯交换反应;咪唑离子液体;微波辐射;工艺强化;

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