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首页> 外文期刊>Energy Conversion & Management >Heterogeneous calcium-based bimetallic oxide catalyzed transesterification of Elaeis guineensis derived triglycerides for biodiesel production
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Heterogeneous calcium-based bimetallic oxide catalyzed transesterification of Elaeis guineensis derived triglycerides for biodiesel production

机译：异质钙基双金属氧化物催化的油棕（Elaeis guineensis）衍生的甘油三酸酯的酯交换反应用于生产生物柴油

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摘要

Calcium-based mixed metal oxides were synthesized via co-precipitation process and investigated as catalysts for biodiesel production. Calcium was added into bulk oxide system in order to increase their basicity and, consequently, improved its performance in the transesterification of Elaeis guineensis oil with methanol. The Ca:Mg ratio used in the preparation was varied in order to define the best concentration of calcium and magnesium leading to solids with ideal morphology (interaction of Ca-O-Mg binary system) and improved calcium loading. Synthesized catalysts were characterized by powder X-ray diffraction (XRD), thermogravimetric/derivative thermogravimetric analysis (TG/DTG), reflection-Fourier transform-infrared (FTIR), N-2 physisorption, CO2 temperature-programmed desorption (CO2-TPD), scanning electron microscopy (SEM). Obtained results demonstrated that the optimal Ca:Mg ratio was 1:1. It was found that mixed solid bases oxides demonstrated high basicity and stability. Mixed CaO-MgO (CM-1.0) catalyst showed higher amount of medium and strong basic sites than other mixed and pure oxide (as a reference) catalysts, respectively during the transesterification reaction. It was found that the catalytic activity of catalysts were arranged in the sequence of: CaO > CM-1.0 > CM-0.5 > CM-2.0 > MgO. The highest conversion of Elaeis guineensis derived triglycerides to methyl esters was achieved at 99% with 4 wt.% of CM-1.0 catalyst at 60 degrees C and 6 h time. Recyclability tests suggested that this catalyst could be recycled for five successive runs without significant loss in catalytic activity. (C) 2016 Elsevier Ltd. All rights reserved.
机译：通过共沉淀法合成了钙基混合金属氧化物，并研究了其作为生物柴油生产的催化剂。钙被添加到本体氧化物体系中，以增加其碱度，因此改善了其在几内亚油（Elaeis guineensis）油与甲醇的酯交换反应中的性能。制备中使用的Ca：Mg比是变化的，以定义最佳的钙和镁浓度，从而产生具有理想形态（Ca-O-Mg二元体系相互作用）和改善的钙负荷的固体。合成的催化剂通过粉末X射线衍射（XRD），热重/衍生热重分析（TG / DTG），反射傅里叶变换红外（FTIR），N-2物理吸附，CO2程序升温脱附（CO2-TPD）进行表征，扫描电子显微镜（SEM）。获得的结果表明，最佳的Ca：Mg比为1：1。发现混合的固体碱氧化物表现出高的碱性和稳定性。在酯交换反应过程中，混合CaO-MgO（CM-1.0）催化剂分别显示出比其他混合催化剂和纯氧化物（作为参考）更高的中等和强碱性位点。发现催化剂的催化活性按以下顺序排列：CaO> CM-1.0> CM-0.5> CM-2.0> MgO。在60摄氏度和6小时的时间内，使用4 wt。％的CM-1.0催化剂在99％的条件下获得了来自Elaeis guineensis的甘油三酸酯的最高转化率。可循环性测试表明，该催化剂可以连续五次循环使用，而不会显着降低催化活性。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2017年第6期|20-27|共8页
  • 作者

    Teo Siow Hwa; Rashid Umer; Choong S. Y. Thomas; Taufiq-Yap Yun Hin;

  • 作者单位

    Univ Putra Malaysia, Catalysis Sci & Technol Res Ctr, Fac Sci, Upm Serdang 43400, Selangor, Malaysia|Univ Putra Malaysia, Dept Chem & Environm Engn, Upm Serdang 43400, Selangor, Malaysia|Univ Putra Malaysia, Dept Chem, Fac Sci, Upm Serdang 43400, Selangor, Malaysia;

    Univ Putra Malaysia, Inst Adv Technol, Upm Serdang 43400, Selangor, Malaysia;

    Univ Putra Malaysia, Dept Chem & Environm Engn, Upm Serdang 43400, Selangor, Malaysia;

    Univ Putra Malaysia, Catalysis Sci & Technol Res Ctr, Fac Sci, Upm Serdang 43400, Selangor, Malaysia|Univ Putra Malaysia, Dept Chem, Fac Sci, Upm Serdang 43400, Selangor, Malaysia|Univ Putra Malaysia, Inst Adv Technol, Upm Serdang 43400, Selangor, Malaysia;

  • 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

    Calcium; Magnesium; Mixed metal oxide; Elaeis guineensis; Transesterification; Reusability;

    机译：钙;镁;混合金属氧化物;吉利沙枣;酯交换作用;可重复使用性;

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