e-journal
Review of plasma catalysis on hydrocarbon reforming for hydrogen production—Interaction, integration, and prospects
Abstract.
This paper, for the first time, reviews the development of the application of plasma catalysis, the
combination of plasma and thermal catalysis, on hydrocarbon reforming for H2 generation. It has been
experimentally demonstrated that this novel technique results in a synergistic effect, i.e., the
performance achieved with plasma catalysis is better than the summation of plasma-alone and
catalysis-alone, indicating its promising application on H2 generation. To gain better insights and provide
useful information for further optimization, the interactions between plasma and thermal catalysis
possibly leading to the synergism observed in different plasma catalysis systems are comprehensively
reviewed. The thermal and non-thermal plasmas are suggested as the suitable plasma source driving the
two-stage and single-stage plasma catalysis systems, in which catalyst are located downstream and
inside the plasma reactor, respectively. In the latter case, the non-thermal plasma should play the role as
exciting the reactants to vibrational state instead of converting them. Because of the either too high
reduced field or too low electron density to effectively generate vibrationally excited species in the
existing non-thermal plasmas, a novel power supply, which could separately control the electron density
and electron energy is proposed to serve as the ideal plasma source.
Keywords: Plasma catalysis, Hydrogen, Hydrocarbon reforming, Interaction, Synergistic factor
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