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首页> 外文期刊>Environmental Science & Technology >Removal of Volatile Organic Compounds by Single-Stage and Two-Stage Plasma Catalysis Systems: A Review of the Performance Enhancement Mechanisms, Current Status, and Suitable Applications
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Removal of Volatile Organic Compounds by Single-Stage and Two-Stage Plasma Catalysis Systems: A Review of the Performance Enhancement Mechanisms, Current Status, and Suitable Applications

机译：单级和两级等离子体催化系统去除挥发性有机化合物：性能增强机理，现状和适用应用的综述

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摘要

This paper provides a comprehensive review regarding the application of plasma catalysis, the integration of nonthermal plasma and catalysis, on VOC removal. This novel technique combines the advantages of fastignition/response from nonthermal plasma and high selectivity from catalysis. It has been successfully demonstrated that plasma catalysis could serve as an effective solution to the major bottlenecks encountered by nonthermal plasma, i.e., the reduction of energy consumption and unwanted/hazardous byproducts. Instead of working independently, the combination could induce extra performance enhancement mechanisms either in a single-stage or a two-stage configuration, in which the catalyst is located inside and downstream from the nonthermal plasma reactor, respectively. These mechanisms are believed to be responsible for the higher energy efficiency and better CO_2 selectivity achieved with plasma catalysis. A comprehensive discussion on the performance enhancement mechanisms is provided in this review paper. Moreover, the current status of the applications of two different plasma catalysis systems on VOC abatement are also given and compared. The catalyst plays an important role in both configurations. Especially for the single-stage type, depositing an inappropriate active component on catalytic support would decrease the VOC removal efficiency instead. To date, no definite conclusion on catalyst selection for the single-stage plasma catalysis is available. However, MnO_2 seems to be the best catalyst for two-stage configuration because it could effectively decompose ozone and generate active species toward VOC destruction. On the other hand, although the single-stage plasma catalysis has been proved to be superior to the two-stage configuration, it does not mean that the former is always the best choice. Considering the typical VOC concentrations from different sources and the characteristics of different plasma catalysis systems, the single-rnstage and two-stage configurations are suggested to be more suitable for industrial and indoor air applications, respectively.
机译：本文提供了有关等离子体催化的应用，非热等离子体与催化的集成在VOC去除方面的全面综述。这项新技术结合了非热等离子体的快速点火/响应和催化的高选择性的优点。已经成功地证明，等离子体催化可以作为非热等离子体遇到的主要瓶颈的有效解决方案，即减少能量消耗和有害/有害副产物。代替独立工作，该组合可以在单阶段或两阶段配置中引起额外的性能增强机制，其中催化剂分别位于非热等离子体反应器的内部和下游。据认为，这些机理是通过等离子体催化实现更高的能量效率和更好的CO 2选择性的原因。本文将对性能增强机制进行全面讨论。此外，还给出并比较了两种不同的等离子体催化系统在减少VOC方面的应用现状。催化剂在两种配置中都起着重要作用。特别是对于单级类型，在催化载体上沉积不合适的活性成分会降低VOC的去除效率。迄今为止，关于单级等离子体催化的催化剂选择尚无确切结论。但是，MnO_2似乎是两阶段构型的最佳催化剂，因为它可以有效地分解臭氧并产生活性物质，以破坏VOC。另一方面，尽管已经证明单级等离子体催化优于两级构型，但这并不意味着前者总是最佳选择。考虑到来自不同来源的典型VOC浓度和不同等离子体催化系统的特性，建议单级和两级配置分别更适合工业和室内空气应用。

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  • 来源
    《Environmental Science & Technology》 |2009年第7期|2216-2227|共12页
  • 作者

    HSIN LIANG CHEN; HOW MING LEE; SHIAW HUEI CHEN; MOO BEEN CHANG; SHENG JEN YU; SHOD NAN LI;

  • 作者单位

    Graduate Institute of Environmental Engineering, National Central University, Chung-Li, Taoyuan County, 320, Taiwan (R.O.C.), Physics Division;

    Institute of Nuclear Energy Research (INER), Longtan, Taoyuan County, 325, Taiwan (R.O.C.);

    Institute of Nuclear Energy Research (INER), Longtan, Taoyuan County, 325, Taiwan (R.O.C.);

    Institute of Nuclear Energy Research (INER), Longtan, Taoyuan County, 325, Taiwan (R.O.C.);

    Industrial Technology Research Institute (ITRI), Hsinchu 310, Taiwan (R.O.C.);

    Industrial Technology Research Institute (ITRI), Hsinchu 310, Taiwan (R.O.C.);

  • 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);美国《化学文摘》(CA);
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  • 正文语种 eng
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