Plasma dry reforming of methane in an atmospheric pressure AC gliding arc discharge: Co-generation of syngas and carbon nanomaterials
By X. Tu, J. Whitehead. 2014
325 citations recorded by the source corpus.
Abstract An alternating-current (AC) gliding arc reactor has been developed offering a new route for the co-generation of syngas and value-added carbon nanomaterials by plasma dry reforming of methane. Different carbon nanostructures including spherical carbon nanoparticles, multi-wall carbon nanotubes and amorphous carbon have been obtained as by-products of syngas generation in the plasma system. Optical emission spectra of the discharge demonstrate the formation of different reactive species (Al, CO, CH, C2, Hα, Hβ and O) in the plasma dry reforming reaction. The effect of different operating parameters (feed flow rate, input power and CH4/CO2 molar ratio) on the performance of the plasma process has been evaluated in terms of the conversion of feed gas, product selectivity and energy conversion efficiency. It is interesting to note that gliding arc plasma can be used to generate much cleaner gas products of which syngas is the main one. The results also show that the energy efficiency of dry reforming using gliding arc plasma is an order of magnitude higher than that for processing using dielectric barrier or corona discharges. Both of these can be attributed to the higher electron density in the order of 1023 m−3 generated in the gliding arc plasma.
Subfields: Electrical and Electronic Engineering, Materials Chemistry, Radiology, Nuclear Medicine and Imaging
View Paper: https://www.semanticscholar.org/paper/9fbb28ccf24097594552b2dd99ce90cc05297fc9
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Citations in the corpus
- Gliding arc plasma for CO2 conversion: Better insights by a combined experimental and modelling approach (2017, background): “, mainly gas conversion), the physical and chemical 23 characteristics of the GA have been extensively studied by experiments, including high-speed 24 photography [20], electrical measurements [21]-[23] and spectroscopic measurements [24]-[25].”
- The 2020 plasma catalysis roadmap (2020, background): “For DRM, η ~ 70% has been reported [134, 135].”