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Conversion of coal fly ash to zeolite utilizing microwave and ultrasound energies: A review

机译：利用微波和超声能将粉煤灰转化为沸石的研究进展

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摘要

The ever increasing consumption of coal around the world has given rise to the by-product coal fly ash that requires an urgent attention and is gaining much needed research attention. This paper introduces pioneering work on zeolitization of coal fly ash utilizing conventional heating methods and reviews the progress made in the conversion of coal fly ash to zeolite and its applications while strongly focusing on the utilization of microwave and ultrasound energies in achieving this goal. An introduction to coal fly ash and zeolitic materials is given and the conversion of the formal to the latter is discussed. Zeolites are multi-utility crystals that have attracted much attention in the research community. Zeolites synthesized from pure chemical precursors are inherently different from zeolites produced from coal fly ash therefore; published works which have investigated the application of zeolites produced from coal fly ash are also discussed. Microwave and ultrasound energies have been reported to dramatically decrease reaction times due to the influences on the induction periods and nucleation. In the last few years these novel energies have blossomed in a useful technique for many applications. As novel energies they hold great promise in rapid and efficient conversion of coal fly ash to value added materials such as zeolites.
机译：全球煤炭消耗量的不断增长已经引起了副产品粉煤灰的产生，这一问题亟待关注，并且正在获得非常需要的研究关注。本文介绍了利用常规加热方法进行煤粉煤灰沸石化的开创性工作，并回顾了将煤粉煤灰转化为沸石及其应用方面的进展，同时重点关注了利用微波和超声能量来实现这一目标。介绍了粉煤灰和沸石材料，并讨论了形式转化为后者。沸石是一种多用途晶体，在研究界引起了很多关注。因此，由纯化学前驱体合成的沸石与由粉煤灰制得的沸石在本质上是不同的。还讨论了已发表的论文，这些论文研究了粉煤灰生产的沸石的应用。据报道，由于对感应周期和成核的影响，微波和超声能极大地减少了反应时间。在过去的几年中，这些新颖的能量已经在许多应用中得到了应用。作为新型能源，它们在将煤粉煤灰快速有效地转化为增值材料（例如沸石）方面具有广阔的前景。

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  • 来源
    《Fuel》 |2015年第15期|250-266|共17页
  • 作者

    Syed Salman Bukhari; Jamshid Benin; Hossein Kazemian; Sohrab Rohani;

  • 作者单位

    Department of Chemical and Biochemical Engineering, Western University (UWO), London, Ontario, Canada;

    Department of Chemical and Biochemical Engineering, Western University (UWO), London, Ontario, Canada,Department of Chemical Engineering, Razi University, Kermanshah, Iran;

    Department of Chemical and Biochemical Engineering, Western University (UWO), London, Ontario, Canada;

    Department of Chemical and Biochemical Engineering, Western University (UWO), London, Ontario, Canada;

  • 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

    Coal fly ash; Hydrothermal; Microwave; Ultrasound; Zeolites;

    机译：粉煤灰;水热微波;超声波沸石;

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