Microwave Plasma Dry Reforming of Methane at High CO2/CH4 Feed Ratio
Dry reforming of methane that converts two greenhouses gases (CH4 and CO2) to synthesis gas (a mixture of H2 and CO) was studied in a commercial bench scale microwave (MW) plasma reactor system at atmospheric pressure. The CO2, CH4 and N2 conversions; H2, CO selectivities and yields, and syngas ratio (H2/CO) were investigated in a wide range of total feed flow rate (0.45 – 2.1 L/min), MW power (700 – 1200 watt) and CO2/CH4 molar ratio (2 – 5). At the feed flow rates of CH4, CO2 and N2 of 0.2, 0.4 and 1.5 L/min respectively, and the MWs input power of 700 W, the highest conversions of CH4 and CO2, selectivity and yield of H2, CO and H2/CO ratio of 79.35%, 44.82%, 50.12, 58.42, 39.77%, 32.89%, and 0.86, respectively, were achieved. The results of this work show that the product ratio increases slightly with the increasing total feed flow rate, but it decreases significantly with the increasing MW power and feeds CO2/CH4 ratio.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.2643838Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 678
 Tu, X. and J.C. Whitehead, Plasma dry reforming of methane in an atmospheric pressure AC gliding arc discharge: co-generation of syngas and carbon nanomaterials. International journal of hydrogen energy, 2014. 39(18): p. 9658-9669.
 Rostrup-Nielsen, J.R., New aspects of syngas production and use. Catalysis today, 2000. 63(2): p. 159-164.
 Rowshanzamir, S. and M. Eikani, Autothermal reforming of methane to synthesis gas: Modeling and simulation. International journal of hydrogen energy, 2009. 34(3): p. 1292-1300.
 Angeli, S.D., et al., State-of-the-art catalysts for CH 4 steam reforming at low temperature. International journal of hydrogen energy, 2014. 39(5): p. 1979-1997.
 Centi, G., E.A. Quadrelli, and S. Perathoner, Catalysis for CO 2 conversion: a key technology for rapid introduction of renewable energy in the value chain of chemical industries. Energy & Environmental Science, 2013. 6(6): p. 1711-1731.
 Özdemir, H., M.F. Öksüzömer, and M.A. Gürkaynak, Preparation and characterization of Ni based catalysts for the catalytic partial oxidation of methane: Effect of support basicity on H 2/CO ratio and carbon deposition. International journal of hydrogen energy, 2010. 35(22): p. 12147-12160.
 Pacheco, J., et al., Greenhouse gas treatment and H 2 production, by warm plasma reforming. International journal of hydrogen energy, 2015. 40(48): p. 17165-17171.
 Jiang, B., et al., Review on electrical discharge plasma technology for wastewater remediation. Chemical Engineering Journal, 2014. 236: p. 348-368.
 Goossens, M., An introduction to plasma astrophysics and magnetohydrodynamics. Vol. 294. 2012: Springer Science & Business Media.
 Aw, M.S., et al., Strategies to enhance dry reforming of methane: Synthesis of ceria-zirconia/nickelecobalt catalysts by freeze-drying and NO calcination. International journal of hydrogen energy, 2014. 39(12636): p. e12647.
 Chun, S.M., Y.C. Hong, and D.H. Choi, Reforming of methane to syngas in a MW plasma torch at atmospheric pressure. Journal of CO2 Utilization, 2017. 19: p. 221-229.
 Cleiren, E., et al., Dry Reforming of Methane in a Gliding Arc Plasmatron: Towards a Better Understanding of the Plasma Chemistry. ChemSusChem, 2017. 10(20): p. 4025-4036.
 Usman, M., W.W. Daud, and H.F. Abbas, Dry reforming of methane: influence of process parameters—a review. Renewable and Sustainable Energy Reviews, 2015. 45: p. 710-744.
 Pakhare, D. and J. Spivey, A review of dry (CO 2) reforming of methane over noble metal catalysts. Chemical Society Reviews, 2014. 43(22): p. 7813-7837.
 Aziznia, A., et al., Comparison of dry reforming of methane in low temperature hybrid plasma-catalytic corona with thermal catalytic reactor over Ni/γ-Al 2 O 3. Journal of Natural Gas Chemistry, 2012. 21(4): p. 466-475.
 Liao, C.-H. and R.-F. Horng, Experimental study of syngas production from methane dry reforming with heat recovery strategy. International Journal of Hydrogen Energy, 2017. 42(40): p. 25213-25224.