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首页> 外文期刊>RSC Advances >Facile synthesis of polyoxometalates tethered to post Fe-BTC frameworks for esterification of free fatty acids to biodiesel
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Facile synthesis of polyoxometalates tethered to post Fe-BTC frameworks for esterification of free fatty acids to biodiesel

机译：将酯化至Fe-BTC框架的聚氧酸盐酯的酯化合成，用于生物柴油的游离脂肪酸的酯化

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摘要

A phosphomolybdic acid (PMA) was sequentially incorporated into highly porous metal-organic frameworks (MOFs, Fe-BTC) by using a facile one-pot synthesis method, and the prepared composite (PMA/Fe-BTC) was employed as an efficient and stable solid acid catalyst for biodiesel production. N-2 adsorption-desorption, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric (TG) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) characterization techniques were employed to reveal the structure-performance relationship. The effects of reaction parameters like catalyst amount, reaction time and temperature were further investigated. This solid acid gave good catalytic performance in the esterification of free fatty acids with methanol, which is attributed to large surface area and thermal stability. The PMA/Fe-BTC was successfully reused for up to six cycles and exhibited high stability. From the kinetic study performed at different reaction temperatures (140 degrees C, 150 degrees C and 160 degrees C) E-a = 49.5 kJ mol(-1) was obtained. In addition, due to the high activity presented in various esterifications of free fatty acids, this composite catalytic material has immense potential for industrial biodiesel production.
机译：通过使用容易的单罐合成方法顺序地掺入高孔金属 - 有机骨架（MOF，Fe-BTC）中依次掺入磷钼酸（PMA），并将制备的复合物（PMA / Fe-BTC）用作有效和用于生物柴油生产的稳定固体酸催化剂。采用N-2吸附 - 解吸，X射线衍射（XRD），傅里叶变换红外光谱（FT-IR），热重量（TG）分析，扫描电子显微镜（SEM）和透射电子显微镜（TEM）表征技术揭示结构性能关系。进一步研究了反应参数等反应参数的影响，进一步研究了催化剂量，反应时间和温度。该固体酸在甲醇的游离脂肪酸的酯化中具有良好的催化性能，这归因于大表面积和热稳定性。 PMA / Fe-BTC成功地重复使用多达六个循环，并表现出高稳定性。从在不同反应温度下进行的动力学研究（140℃，150℃和160℃）E-A = 49.5kJ摩尔（-1）。此外，由于在游离脂肪酸的各种酯化中呈现的高活性，该复合催化材料具有工业生物柴油生产的巨大潜力。

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  • 来源
    《RSC Advances》 |2019年第14期|共8页
  • 作者

    Zhang Qiuyun; Liu Xiaofang; Yang Tingting; Yue Caiyan; Pu Quanlin; Zhang Yutao;

  • 作者单位

    Anshun Univ Sch Chem &

    Chem Engn Anshun 561000 Guizhou Peoples R China;

    Guiyang Univ Food &

    Pharmaceut Engn Inst Guiyang 550005 Guizhou Peoples R China;

    Anshun Univ Sch Chem &

    Chem Engn Anshun 561000 Guizhou Peoples R China;

    Anshun Univ Sch Chem &

    Chem Engn Anshun 561000 Guizhou Peoples R China;

    Anshun Univ Sch Chem &

    Chem Engn Anshun 561000 Guizhou Peoples R China;

    Anshun Univ Sch Chem &

    Chem Engn Anshun 561000 Guizhou Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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