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Direct nonoxidative conversion of methane to hydrogen and higher hydrocarbons by dielectric barrier discharge plasma with plasma catalysis promoters

Lookup NU author(s): Dr Elijah Chiremba, Dr Kui Zhang, Professor Canan Kazak, Professor Galip Akay

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Abstract

© 2017 American Institute of Chemical Engineers. Direct nonoxidative conversion of methane to hydrogen and hydrocarbons was achieved at atmospheric pressure and 120°C using nonthermal plasma sustained by plasma catalysis promoters (PCPs). Reactors had two different electrode configurations. Methane conversion correlated well with the specific energy density (SED). Methane conversion was independent of plasma power, flow rate, electrode configuration, or the type of PCPs. Hydrogen selectivity (ca. 60%) was dependent significantly on PCP and electrode configuration. The ethane/ethylene molar ratio increased from 0 to 0.15 with increasing SED. When the SED value was below ca. 100 kJ/L, ethylene was the only C2 hydrocarbon. These results are similar to the recently reported nonoxidative catalytic methane conversion at ca. 1000°C. Therefore, these results represent process intensification in methane conversion. PCPs underwent structural and chemical changes but their performances are not affected during an 80-h experimental period.


Publication metadata

Author(s): Chiremba E, Zhang K, Kazak C, Akay G

Publication type: Article

Publication status: Published

Journal: AIChE Journal

Year: 2017

Volume: 63

Issue: 10

Pages: 4418-4429

Print publication date: 01/10/2017

Online publication date: 25/04/2017

Acceptance date: 16/03/2017

ISSN (print): 0001-1541

ISSN (electronic): 1547-5905

Publisher: John Wiley and Sons Inc.

URL: https://doi.org/10.1002/aic.15769

DOI: 10.1002/aic.15769


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