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首页> 外文期刊>Applied Energy >Microwave reforming with char-supported Nickel-Cerium catalysts: A potential approach for thorough conversion of biomass tar model compound
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Microwave reforming with char-supported Nickel-Cerium catalysts: A potential approach for thorough conversion of biomass tar model compound

机译：炭负载的镍铈催化剂进行微波重整：生物质焦油模型化合物彻底转化的潜在方法

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摘要

Tar abatement and removal is most challenging facing industrialization of biomass gasification technology and its cost-effective removal is indispensably dreamed. Thorough, low-cost and stable removal of toluene, a major compound of biomass tar, was achieved by the microwave catalytic reforming method. A self-designed microwave tube furnace was employed, and toluene was converted with char-supported nickel-iron and nickel-cerium catalysts in an ex situ hot gas conditions. Under the optimal conditions, a 100% toluene conversion efficiency could be achieved, and the hydrogen concentration in the product gas could reach 28.2 vol%. The energy efficiency was 98.97 g/kW h. According to duration tests, the conversion efficiency of nickel-cerium catalysts could still be higher than 90%, even after 8-h successive runs. Comprehensive characterizations of fresh and spent catalysts were conducted, showing agglomeration was the main challenge instead of carbon deposition, which was previously commonly believed. Furthermore, in the pursuit of advancing industrial tar abatement, the depletion and thermal stability of char-supported catalysts were evaluated through a custom-designed gasification-atmosphere-thermogravimetry-mass spectrum analysis. The study provided a breakthrough for the integration of thermal, catalysis and microwave effects for toluene conversion, and the mechanism of char-supported catalysis under specific microwave conditions was also highlighted.
机译：减少和去除焦油是生物质气化技术产业化面临的最大挑战，其低成本高效率的去除是不可或缺的梦想。通过微波催化重整方法，可以彻底，低成本，稳定地去除作为生物质焦油的主要成分的甲苯。使用自行设计的微波管式炉，在异位热气条件下，用焦炭负载的镍-铁和镍-铈催化剂转化甲苯。在最佳条件下，可以获得100％的甲苯转化效率，并且产物气中的氢气浓度可以达到28.2 vol％。能量效率为98.97 g / kW h。根据持续时间测试，即使连续运行8小时，镍-铈催化剂的转化效率仍可能高于90％。对新鲜和用过的催化剂进行了全面的表征，表明聚结是主要挑战，而不是以前通常认为的碳沉积。此外，在追求先进的工业焦油减少方面，通过定制设计的气化-大气-热重-质谱分析，评估了炭载催化剂的消耗和热稳定性。该研究为热，催化和微波效应在甲苯转化方面的集成提供了突破，并且重点介绍了在特定微波条件下炭载催化的机理。

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  • 来源
    《Applied Energy》 |2020年第1期|114375.1-114375.12|共12页
  • 作者

  • 作者单位

    Tianjin Univ Sch Environm Sci & Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin 300072 Peoples R China|Tianjin Engn Ctr Biomass Derived Gas & Oil Tianjin Key Lab Biomass Wastes Utilizat Key Lab Biomass Based Oil & Gas China Petr & Chem Tianjin 300072 Peoples R China;

    Tibet Univ Sch Sci 36 Jiangsu St Lhasa 850012 Tibet Autonomou Peoples R China;

    West Virginia Univ Ctr Innovat Gas Res & Utilizat Dept Chem & Biomed Engn Morgantown WV 26506 USA;

  • 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

    Microwave; Biomass gasification tar; Toluene; Bio-char; Nickel-Cerium catalyst;

    机译：微波;生物质气化焦油;甲苯;生物炭镍铈催化剂;

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