Dry reforming of methane over Ni/Ce0.62Zr0.38O2 catalysts: Effect of Ni loading on the catalytic activity and on H2/CO production |
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| Institution: | 1. Silesian University of Technology, Institute of Physical Chemistry and Technology of Polymers, M. Strzody 9, 44-100 Gliwice, Poland;2. Sorbonne Universités, UPMC Université Paris 06, UMR 7190, Institut Jean-Le-Rond-d’Alembert, 75005 Paris, France;3. CNRS, UMR 7190, Institut Jean-Le-Rond-d’Alembert, 75005 Paris, France;4. Polish Academy of Sciences, Centre of Polymer and Carbon Materials, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland;5. Polish Academy of Sciences, Institute of Chemical Engineering, Baltycka 5, 44-100 Gliwice, Poland |
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| Abstract: | The activity of ceria–zirconia-supported nickel catalysts (Ni/CZ) with various loadings of nickel (2, 4 and 10 wt. %) was studied in the case of low-temperature dry reforming of methane (DRM). XRD, SBET, SEM, TPD-CO2 and thermogravimetry were used to determine the physicochemical properties of the catalysts and of the carbon deposits formed on the surface. It was found that the agglomerates of the Ni-active phase are formed on the surface of the support for high loadings of nickel. The best conversions of CO2 and CH4 and an optimum ratio H2/CO = 1 were obtained for the catalysts with the highest Ni content. It was also found that loading has an influence on the amount of carbon deposits formed in the DRM process. |
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| Keywords: | Methane Hydrogen Dry reforming Ceria–zirconia Nickel loading |
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