Enhancing C-H bond activation of methane via temperature-controlled, catalyst-plasma interactions

Title
Enhancing C-H bond activation of methane via temperature-controlled, catalyst-plasma interactions
Authors
김종식Marshall S. AbbottDavid B. GoJason C. Hicks
Issue Date
2016-07
Publisher
ACS energy letters
Citation
VOL 1, NO 1-99
Abstract
Recent shale gas discoveries and advances in plasma chemistry provide the basis to exploit metal surface-plasma interactions to precisely control C-H bond activation on catalytic surfaces, leading to improved reaction efficiencies. Although the exact determination of plasma-catalyst interactions remains a topic of continuing research, this Letter provides evidence that plasma catalyst interactions exist and can be used to significantly enhance the activation of C-H bonds at temperatures >630 K, probed by the catalytic dry reforming of methane with carbon dioxide using Ni/Al2O3. We systematically varied bulk temperature and plasma power to determine Ni plasma interactions. In contrast to reactions at low temperatures (<630 K), CH4 conversion, H-2 yield (selectivity), and forward CH4 consumption rate were significantly enhanced at higher temperatures with plasma (>8 fold increase). Other competing contributors, such as gas-phase plasma reactions, charge confinement, and plasma-driven enhanced bulk gas temperatures, played minor roles when operating at temperatures >630 K.
URI
http://pubs.kist.re.kr/handle/201004/67076
ISSN
2380-8195
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KIST Publication > Article
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