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    Microwave Plasma Enhanced Reduction of SO2 to Sulfur with Carbon
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    State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, P.O. Box 110, Dalian 116023, China, and Graduate School of the Chinese Academy of Sciences, Beijing, China
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    Energy & Fuels

    Cite this: Energy Fuels 2007, 21, 2, 867–869
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    https://doi.org/10.1021/ef0605091
    Published March 6, 2007
    Copyright © 2007 American Chemical Society
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    Abstract

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    The emission of SO2 from industrial flue gas contributes to a large part of atmospheric pollution. With the more stringent regulations for SO2 emission, more efficient technologies for SO2 removal have to be developed. In the present work, we for the first time employed microwave plasma to reduce SO2 with three carbons (activated carbon, charcoal, and coke). At a microwave power of 110 W, SO2 can be completely reduced to sulfur by the activated carbon. The reactivity of the three carbons followed the order of activated carbon > charcoal > coke, which was consistent with that under conventional heating. However, much lower temperatures were required to obtain the same percentage conversion of SO2 under microwave plasma than that under conventional heating. Furthermore, in the presence of O2 in the feed gas, SO2 can also be efficiently reduced with carbons under the microwave plasma.

    Copyright © 2007 American Chemical Society

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    †

     Chinese Academy of Science.

    ‡

     Graduate School of the Chinese Academy of Sciences.

    *

     Corresponding author tel.:  +86-411-84379015; fax:  +86-411-84691570; e-mail:  [email protected].

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    Cite this: Energy Fuels 2007, 21, 2, 867–869
    Click to copy citationCitation copied!
    https://doi.org/10.1021/ef0605091
    Published March 6, 2007
    Copyright © 2007 American Chemical Society
    Request reuse permissions

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