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    Steam reforming of methane in a temperature-controlled dielectric barrier discharge reactor: The role of electron-induced chemistry vs thermochemistry

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    Liu+et+al_2018_J._Phys._D__Appl._Phys._10.1088_1361-6463_aad7e7.pdf
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    Type
    Article
    Authors
    Liu, Jing-Lin Lin
    Snoeckx, Ramses cc
    Cha, Min Suk cc
    KAUST Department
    Clean Combustion Research Center
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/1384-01-01
    Date
    2018-08-20
    Online Publication Date
    2018-08-20
    Print Publication Date
    2018-09-26
    Permanent link to this record
    http://hdl.handle.net/10754/628385
    
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    Abstract
    While classic reforming processes rely on heat and chemical equilibrium, plasma-based reforming processes possess the ability to induce non-equilibrium and reactive chemistry at low temperatures using high energy electrons. To better understand the distinctive roles of both electron-induced chemistry and thermochemistry during plasma-assisted fuel reforming, we previously developed a temperature-controlled dielectric barrier discharge (DBD) reactor, which controlled the gas temperature and the electron temperature independently. Here, we investigate plasma-assisted steam reforming of methane using the temperature-controlled DBD reactor and electron-kinetics calculations. We investigated the individual effects of the determining factors for electron-induced chemistry (i.e., reduced electric field intensity and discharge power) and for thermochemistry (i.e., background gas temperature) by varying the discharge power, gas temperature, and pressure inside the reactor. As a result, we found that both the electron-induced chemistry and thermochemistry governed the reactant conversions. Thermochemistry positively affected the methane conversion in particular, but negatively affected the water conversion as the gas temperature increased. The electron-induced chemistry weakly affected the product distribution, while the background temperature (thermochemistry) strongly influenced the product selectivity and composition by altering the chemical pathways involving the plasma-generated reactive species at the given temperature.
    Citation
    Liu J-L, Snoeckx R, Cha MS (2018) Steam reforming of methane in a temperature-controlled dielectric barrier discharge reactor: the role of electron-induced chemistry versus thermochemistry. Journal of Physics D: Applied Physics 51: 385201. Available: http://dx.doi.org/10.1088/1361-6463/aad7e7.
    Sponsors
    The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST), under award number BAS/1/1384-01-01.
    Publisher
    IOP Publishing
    Journal
    Journal of Physics D: Applied Physics
    DOI
    10.1088/1361-6463/aad7e7
    Additional Links
    http://iopscience.iop.org/article/10.1088/1361-6463/aad7e7
    ae974a485f413a2113503eed53cd6c53
    10.1088/1361-6463/aad7e7
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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