Hybrid plasma-catalytic methanation of CO2 at low temperature over ceria zirconia supported Ni catalysts - Combustion, Energies Propres et Turbulence Accéder directement au contenu
Article Dans Une Revue International Journal of Hydrogen Energy Année : 2016

Hybrid plasma-catalytic methanation of CO2 at low temperature over ceria zirconia supported Ni catalysts

Résumé

A hybrid plasma-catalytic system was used in for the hydrogenation of carbon dioxide (CO2) into methane (methanation) at atmospheric pressure and very low temperature using a dielectric barrier discharge (DBD) plasma reactor packed with Ni-CexZr1−xO2 catalysts. Three catalysts were prepared by a conventional wet impregnation method, using 15 wt% of Ni loading over ceria-zirconia mixed oxides having different Ce/Zr ratios. The physico–chemical features of both catalysts and supports were evaluated by means of X-Ray Diffraction (XRD), Temperature-Programmed Reduction of H2 (H2-TPR), Temperature Programmed-Desorption of CO2 (CO2-TPD) and Transmission Electron Microscopy (TEM). The methanation experiments in the absence or in the presence of plasma were carried out in the temperature range of 90–420 °C. The hybrid plasma 15NiCZ5842 catalyst combination was found to efficiently convert CO2 into methane even at low temperature. Indeed, CO2 conversions as high as 80%, together with 100% selectivity toward methane was measured in the presence of plasma at 90 °C. On the contrary in the absence of plasma, the same conversion and selectivity were only achieved at much higher temperatures around 300 °C, for the same catalyst.
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Dates et versions

hal-01289154 , version 1 (16-03-2016)

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Magadalena Nizio, Abdulkader Albarazi, Simeon Cavadias, Jacques Amouroux, Maria Elena Galvez, et al.. Hybrid plasma-catalytic methanation of CO2 at low temperature over ceria zirconia supported Ni catalysts. International Journal of Hydrogen Energy, 2016, 41 (27), pp.11584-11592. ⟨10.1016/j.ijhydene.2016.02.020⟩. ⟨hal-01289154⟩
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