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首页> 外文期刊>Frontiers of environmental science & eng >CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating
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CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating

机译：微波加热下CuO /沸石催化气相甲苯的氧化

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摘要

The development of a combined process of catalytic oxidation and microwave heating for treatment of toluene waste gas was described in this work. Toluene, a typical toxic volatile organic compound, was oxidized through a fixed bed reaction chamber containing zeolite-supported copper oxide (CuO/zeolite) catalyst mixed with silicon carbide (SiC), an excellent microwave-absorbing material. The target compound was efficiently degraded on the surface of the catalyst at high reaction temperature achieved by microwave-heated SiC. A set of experimental parameters, such as microwave power, air flow and the loading size of CuO etc., were investigated, respectively. The study demonstrated these parameters had critical impact on toluene degradation. Under optimal condition, 92% toluene was removed by this combined process, corresponding to an 80%-90% TOC removal rate. Furthermore, the catalyst was highly stable even after eight consecutive 6-h runs. At last, a hypothetical degradation pathway of toluene was proposed based on the experimental data obtained from gas chromatography-mass spectrum and Fourier transform infrared spectro-scopy analyses.
机译：这项工作描述了催化氧化和微波加热相结合的处理甲苯废气的工艺的发展。甲苯是一种典型的有毒挥发性有机化合物，通过固定床反应室进行氧化，该反应室包含与沸石结合的沸石负载的氧化铜（CuO /沸石）催化剂，碳化硅（SiC）是一种出色的微波吸收材料。在通过微波加热的SiC实现的高反应温度下，目标化合物在催化剂表面上有效地降解。分别研究了一组实验参数，如微波功率，空气流量和CuO的负载量等。研究表明，这些参数对甲苯降解具有关键影响。在最佳条件下，通过该联合工艺去除了92％的甲苯，相当于80％-90％的TOC去除率。此外，即使在连续八次连续运行6小时后，该催化剂也高度稳定。最后，基于气相色谱-质谱和傅立叶变换红外光谱分析的实验数据，提出了一种假设的甲苯降解途径。

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  • 来源
    《Frontiers of environmental science & eng》 |2013年第3期|395-402|共8页
  • 作者

    Longli Bo; Jianbo Liao; Yucai Zhang; Xiaohui Wang; Quan Yang;

  • 作者单位

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    microwave; catalytic oxidation; CuO/zeolite catalyst; silicon carbide (SiC); toluene;

    机译：微波;催化氧化CuO /沸石催化剂;碳化硅（SiC）;甲苯;

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