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首页> 外文期刊>RSC Advances >Hydrothermal effect on synthesis, characterization and catalytic properties of calcium methoxide for biodiesel production from crude Jatropha curcas
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Hydrothermal effect on synthesis, characterization and catalytic properties of calcium methoxide for biodiesel production from crude Jatropha curcas

机译：来自粗麻醉Curcas的生物柴油生产钙甲醇钙的合成，表征和催化性能的水热效应

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摘要

Hydrothermal synthesis is a well-suited approach for preparing bulk metal catalysts with high purity as it is cost-effective and easy to control in terms of temperature and time. In the current study, an effective catalyst for transesterification of high fatty acid content of crude Jatropha curcas oil (JCO) was appraised. Calcium methoxide (Ca(OCH3)(2)) has been successfully synthesized via a green and economical hydrothermal process at different synthesis times. CaO was used as a precursor as it is abundant, inexpensive and environmentally friendly. Ca(OCH3)(2) can form on the surface of CaO and its active basic surface is very well developed. This facile experimental strategy without any surfactant or template produced porous Ca(OCH3)(2) with a high surface area and high basicity, which leads to a superior catalytic reaction and is a promising alternative for short-reaction-time solid-based catalysts in biodiesel production in terms of excellent transesterification performance and long durability. The performance of synthesized Ca(OCH3)(2) was examined by characterizing it using analytical techniques such as TG-DTA, XRD, BET, FT-IR, TEM and SEM. Ca(OCH3)(2) catalysts had three types of morphologies, i.e. (a) irregular round shape particles, (b) a well arrangement of plate-like structures with rough surface and (c) a cluster of tiny plate-like architectures with smooth surfaces. The correlation between synthesis time, surface area and morphology of catalysts and the biodiesel yield was studied. Ca(OCH3)(2) was able to maintain the FAME content above 86% after a fifth cycle, at optimum reaction conditions of 2 h reaction time, 12 : 1 methanol/oil molar ratio, 2 wt% catalyst loading and 65 degrees C reaction temperature. Ca(OCH3)(2) is a solid heterogeneous catalyst for the transesterification reaction of non-edible Jatropha curcas oil for biodiesel production. The catalyst can be separated easily from the reaction mixture and reused to give a consistent transesterification activity.
机译：水热合成是一种良好适用的方法，用于制备具有高纯度的散装金属催化剂，因为它在温度和时间方面具有成本效益且易于控制。在目前的研究中，评估了粗麻风树（JCO）的高脂肪酸含量的酯交换的有效催化剂。通过不同的合成时间通过绿色和经济的水热过程成功地合成了甲醇钙（Ca（OCH3）（2））。 Cao被用作前体，因为它丰富，廉价和环保。 Ca（OCH3）（2）可以在CaO的表面上形成，其活性基本表面非常好。这种容易实验策略，没有任何表面活性剂或模板产生多孔Ca（OCH3）（2），具有高表面积和高碱度，这导致优异的催化反应，并且是短反应时间固体基催化剂的有希望的替代方案生物柴油生产在优异的酯交换性能和长期耐用性方面。通过使用TG-DTA，XRD，BET，FT-IR，TEM和SEM等分析技术表征合成Ca（2）的合成Ca（2）的性能。 Ca（OCH3）（2）催化剂具有三种类型的形态，即（a）不规则圆形颗粒，（b）具有粗糙表面的板状结构的井布置和（c）一组微小的板状架构平滑表面。研究了合成时间，表面积和催化剂形态与生物柴油产率之间的相关性。在第五循环后，Ca（OCH3）（2）能够在第五次循环后保持86％以上的成名含量，在2小时反应时间为12：1甲醇/油摩尔比，2wt％催化剂负荷和65℃反应温度。 Ca（OCH3）（2）是用于生物柴油生产的不可食用的麻醉药醋酸油的酯交换反应的固体异质催化剂。催化剂可以容易地从反应混合物中分离，并重复使用以提供一致的酯交换活性。

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  • 来源
    《RSC Advances》 |2015年第6期|共11页
  • 作者

    Teo Siow Hwa; Taufiq-Yap Yun Hin; Rashid Umer; Islam Aminul;

  • 作者单位

    Univ Putra Malaysia Fac Sci Catalysis Sci &

    Technol Res Ctr Serdang 43400 Selangor Malaysia;

    Univ Putra Malaysia Fac Sci Catalysis Sci &

    Technol Res Ctr Serdang 43400 Selangor Malaysia;

    Univ Putra Malaysia Inst Adv Technol Serdang 43400 Selangor Malaysia;

    Univ Putra Malaysia Fac Sci Catalysis Sci &

    Technol Res Ctr Serdang 43400 Selangor Malaysia;

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  • 正文语种 eng
  • 中图分类 化学;
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