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Thermoanalytical Characterization and Catalytic Conversion of Deoiled Micro Algae and Jatropha Seed Cake

机译:脱藻微藻和麻风树籽饼的热分析表征及催化转化

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摘要

The thermal decomposition of the byproducts of the biodiesel process was studied by thermoanalytical methods. Deoiled algae cake and jatropha seed deoiled cake were pyrolyzed and the catalytic effects of silica supported iron catalysts (Fe/FSM-16 and Fe/SBA-15) and magnetite (Fe3O4) were tested. The evolution profiles of the decomposition products as well as the thermal stability of the samples were determined by thermogravimetry/mass spectrometry (TG/MS). The formation of the volatile products was monitored by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The composition and the amounts of the gaseous products changed significantly in the presence of the silica supported iron catalysts: the yield of hydrogen and carbon monoxide considerably increased above the decomposition temperature of 400 degrees C. Both.silica supported iron catalysts had important effects on the yield of the products originating from carbohydrates and lignins. The formation of anhydrosugars and phenolic compounds was hindered, while the evolution of aromatic and aliphatic hydrocarbons was enhanced. Fe/FSM-16 proved to be more efficient than Fe/SBA-15 and Fe3O4 catalysts. The thermal decomposition of the protein content of the samples resulted in the formation of 2,5-diketopiperazines and smaller molecules (e.g., ammonia). The silica supported iron catalysts had a special effect: their presence promoted the reaction of fatty acid esters and ammonia resulting in the formation of alkyl nitriles during the thermal decomposition.
机译:通过热分析方法研究了生物柴油过程副产物的热分解。对脱藻藻饼和麻风树籽脱脂饼进行热解,并测试了二氧化硅负载的铁催化剂(Fe / FSM-16和Fe / SBA-15)和磁铁矿(Fe3O4)的催化作用。分解产物的演化曲线以及样品的热稳定性通过热重/质谱(TG / MS)确定。通过热解-气相色谱/质谱(Py-GC / MS)监测挥发性产物的形成。在二氧化硅负载的铁催化剂的存在下,气态产物的组成和数量发生了显着变化:高于400摄氏度的分解温度,氢气和一氧化碳的收率大大提高。两种二氧化硅负载的铁催化剂均对二氧化硅的催化作用产生重要影响。源自碳水化合物和木质素的产品的产量。脱水糖和酚类化合物的形成受到阻碍,而芳香族和脂肪族碳氢化合物的释放得到增强。 Fe / FSM-16被证明比Fe / SBA-15和Fe3O4催化剂更有效。样品蛋白质含量的热分解导致形成2,5-二酮哌嗪和较小的分子(例如氨)。二氧化硅负载的铁催化剂具有特殊作用:它们的存在促进了脂肪酸酯与氨的反应,导致在热分解过程中形成烷基腈。

著录项

  • 来源
    《Energy & fuels》 |2016年第10期|7982-7993|共12页
  • 作者单位

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

    IIP, CSIR, BFD, Dehra Dun 248005, Uttarakhand, India;

    IIP, CSIR, BFD, Dehra Dun 248005, Uttarakhand, India;

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

    Budapest Univ Technol & Econ, Dept Appl Biotechnol & Food Sci, Szent Gellert Ter 4, H-1111 Budapest, Hungary;

    IIP, CSIR, BFD, Dehra Dun 248005, Uttarakhand, India;

    Hungarian Acad Sci, Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-18 00:40:01

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