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首页> 外文期刊>Journal of Analytical & Applied Pyrolysis >Hydrothermal upgrading of water-insoluble algal biocrude over γ-Al_2O_3 supported multi-metallic catalysts
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Hydrothermal upgrading of water-insoluble algal biocrude over γ-Al_2O_3 supported multi-metallic catalysts

机译：γ-Al_2O_3负载的多金属催化剂对水不溶性藻类生物质的水热提质

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摘要

The hydrothermal liquefaction (HTL) of microalgae can produce a water-insoluble biocrude as well as other by-products, and is a promising technology for crude bio-oil (biocrude) production. This work explored for the first time the catalytic hydrothermal upgrading (at 400 degrees C with H-2 for 1 h or 4 h) of the water-insoluble biocrude over gamma-Al2O3 supported NiMoW, NiCoMo, CoMoW and CoNiMoW catalysts synthesized in our lab. The results show that CoMoW/gamma-Al2O3 both for 1 h and 4 h supported high upgraded oil yields (over 70 wt.%). The upgraded oil by CoNiMoW/gamma-Al2O3 for 4 h had the highest C (78.6 wt.%) and H (9.4 wt.%) contents and heating value (38.7 MJ/kg). CoMoW/gamma-Al2O3 (3 wt.% CoO, 10 wt.% MoO3 and 14 wt.% WO3) for 1 h was a good option and could lead to equivalent levels of C, H contents and HHV but the lowest O content (6.31 wt.%) of upgraded oil, in comparison with all gamma-Al2O3 supported multi-metallic catalysts for 4 h. It significantly increased the alkane content and decreased the O-containing compound content by the catalytic hydrodeoxygenation of organic acids and by the dehydration of amides. Both CoMoW/gamma-Al2O3 and CoNiMoW/gamma Al2O3 for 4 h performed well in converting high-boiling-point macromolecules to comparatively lower-molecular-weight compounds.
机译：微藻的水热液化（HTL）可以产生不溶于水的生物原油以及其他副产物，并且是用于生产粗生物油（biocrude）的有前途的技术。这项工作首次探索了在我们的实验室中合成的γ-Al2O3负载的NiMoW，NiCoMo，CoMoW和CoNiMoW催化剂上水不溶性生物原油的催化水热提质（在H-2下，在400摄氏度下进行1小时或4小时）。 。结果表明，CoMoW /γ-Al2O3分别在1小时和4小时内均支持高提质油产量（超过70 wt。％）。通过CoNiMoW /γ-Al2O3进行的4小时提质油具有最高的C（78.6重量％）和H（9.4重量％）含量和热值（38.7 MJ / kg）。 CoMoW /γ-Al2O3（3 wt。％CoO，10 wt。％MoO3和14 wt。％WO3）持续1小时是一个不错的选择，它可以导致C，H含量和HHV相当，但O含量最低（与所有由γ-Al2O3负载的多金属催化剂相比，在6个小时内提纯了6.31 wt。％的精制油。通过有机酸的催化加氢脱氧和酰胺的脱水，它显着增加了烷烃含量，降低了含O化合物的含量。 CoMoW /γ-Al2O3和CoNiMoW /γ-Al2O3在4h内均能很好地将高沸点大分子转化为较低分子量的化合物。

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  • 来源
    《Journal of Analytical & Applied Pyrolysis》 |2019年第6期|188-194|共7页
  • 作者

    Xu Donghai; Liu Liang; He Zhen; Yang Jianqiao; Wu Zhiqiang; Jing Zefeng;

  • 作者单位

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China|Jiangsu Prov Key Lab Environm Engn, Nanjing 210036, Jiangsu, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China;

  • 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
  • 关键词

    Hydrothermal liquefaction; Microalgae; Water-insoluble biocrude; gamma-Al2O3 supported multi-metallic catalyst; Biorefinery;

    机译：水热液化;微藻;不溶于水的生物原油;γ-Al2O3负载的多金属催化剂;生物精炼;

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