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Geopolymer composites for chemical looping combustion

机译:用于化学循环燃烧的地聚合物复合材料

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摘要

Chemical looping combustion allows a simple separation of CO2 during the combustion of fossil fuels, thanks to the use of regenerable oxygen carriers. In this work, novel materials containing manganese and iron/manganese oxides have been developed via geopolyrnerization, and characterized in thermogravimetric apparatus and fixed bed reactor. The materials demonstrated suitable characteristics for chemical looping combustion (CLC). The tests conducted in the temperature range 800-900 degrees C revealed the good performance of the developed oxygen carriers, which also exhibited the ability to release O-2 in inert conditions. Efficiencies in CO conversion up to 99% were achieved, as well as some synergies between Fe and Mn oxides gave a beneficial effect toward the oxygen yield. X-ray diffraction analyses of the samples confirmed the effective reduction/oxidation behavior of the materials, as well as the morphological characterization did not reveal dramatic changes of the internal microstructure up to 900 degrees C.
机译:由于使用了可再生的氧气载体,化学循环燃烧使化石燃料燃烧过程中的二氧化碳得以简单分离。在这项工作中,通过地聚化技术开发了含有锰和铁/锰氧化物的新型材料,并在热重分析仪和固定床反应器中进行了表征。这些材料表现出适合化学循环燃烧(CLC)的特性。在800-900摄氏度的温度范围内进行的测试表明,已开发的氧气载体具有良好的性能,并且还表现出了在惰性条件下释放O-2的能力。达到了高达99%的CO转化效率,而且Fe和Mn氧化物之间的一些协同作用对氧收率产生了有益的影响。样品的X射线衍射分析证实了材料的有效还原/氧化行为,并且形态学表征并未揭示高达900摄氏度的内部微观结构的显着变化。

著录项

  • 来源
    《Fuel》 |2018年第1期|436-442|共7页
  • 作者单位

    CNR, ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, Italy;

    CNR, ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, Italy;

    CNR, ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, Italy;

    CNR, ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, Italy;

    CNR, ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, Italy;

  • 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

    Chemical looping combustion; Oxygen carriers; Geopolymers; CO2 capture;

    机译:化学循环燃烧氧气载体地聚合物二氧化碳捕集;

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