Dry reforming of methane over Ni/Ce0.62Zr0.38O2 catalysts: Effect of Ni loading on the catalytic activity and on H2/CO production

Radlik, Monika; Adamowska-Teyssier, Małgorzata; Krztoń, Andrzej; Kozieł, Krzysztof; Krajewski, Wieslaw; Turek, W.; Costa, Patrick Da

doi:10.1016/j.crci.2015.03.008

Cited by 56 publications

(27 citation statements)

References 43 publications

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“…The incorporation of Ce has a minimal effect on the surface basicity of the NiZr sample, but, on the contrary, it greatly influences not only the quantity but mainly the nature of the basic centres of Ca(Y)-doped supports. In general, after the incorporation of Ce, the intensity of the low temperature peak (weak basicity) decreases, probably due to the partial covering of the support surface by CeO 2 , while new contributions appeared in the intermediate/high temperature range, likely associated to the Ce-O sites [31].…”

Section: Resultsmentioning

confidence: 99%

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

et al. 2019

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In this study, we reported on the effect of promoting Ni/ZrO2 catalysts with Ce, Ca (two different loadings), and Y for the aqueous-phase reforming (APR) of methanol. We mainly focused on the effect of the redox properties of ceria and the basicity provided by calcium or yttrium on the activity and selectivity of Ni in this reaction. A systematic characterization of the catalysts was performed using complementary methods such as XRD, XPS, TPR, CO2-TPD, H2 chemisorption, HAADF-STEM, and EDS-STEM. Our results reveal that the improvement in reducibility derived from the incorporation of Ce did not have a positive impact on catalytic behaviour thus contrasting with the results reported in the literature for other Ce-based catalytic compositions. On the contrary, the available Ni-metallic surface and the presence of weak basic sites derived from Ca incorporation seem to play a major role on the catalytic performance for APR of methanol. The best performance was found for a Ce-free catalyst with a molar Ca content of 4%.

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Section: Resultsmentioning

confidence: 99%

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

et al. 2019

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“…Konishcheva et al [137] reported a loss of activity of Ni/CeO2 catalysts prepared via impregnation from chlorine salts due to the blockage of ceria surface by chlorine atoms. Another important factor is the possibility of the introduction of Ni species into the lattice of ceria, which influences nickel-support interactions, improves dispersion and inhibits sintering of nickel species [138,139]. The activity of Ni/CeO2 catalyst may be further improved via application of mixed ceria-zirconia support.…”

Section: Reaction Conditionsmentioning

confidence: 99%

A review on plasma-catalytic methanation of carbon dioxide – Looking for an efficient catalyst

Dębek

Azzolina-Jury

Travert

et al. 2019

Renewable and Sustainable Energy Reviews

103

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The review focuses on presenting recent findings on CO2 methanation plasma-catalytic process. In order to understand the background of the research, firstly a summary of thermal catalytic CO2 methanation is presented. Secondly, discussion on plasma CO2 hydrogenation including various plasma types and process parameters is addressed. Catalytic CO2 methanation is already an industrial process achieving high conversions of CO2 and CH4 yield. However, the need to optimize this process (decrease reaction temperature, increase catalyst activity, selectivity and stability) resulted in the development of plasma technology. It was proven that plasma can actively convert CO2. The main product of plasma CO2 hydrogenation is, however, carbon monoxide. Therefore, a plasma process is not selective for CH4 production and the presence of a catalyst is necessary to effectively convert CO2 to CH4 under plasma conditions. The study of plasma-catalytic CO2 methanation is quite a new topic focused mainly on the application of dielectric barrier discharge plasma and Ni-based catalyst. This review summarizes recent advantages of the plasma catalytic process and discusses possible directions of catalyst development.

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“…This fact may point a stronger interaction between Ni and ceria from the support, resulting in enhance basicity of 15NiCZ8515 catalyst. According to the literature addition Ni into the ceria-zirconia improved the redox properties of the material favoring oxygen transfer, which would be required for CO 2 activation [25,27,28]. However, the increased presence of zirconium in the mixed oxide support may hinder the strong interaction between Ni and ceria.…”

Section: Role Of Active Phase and Supportmentioning

confidence: 99%

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

Nizio

Albarazi

Cavadias

et al. 2016

International Journal of Hydrogen Energy

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123

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International audienceA 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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Dry reforming of methane over Ni/Ce0.62Zr0.38O2 catalysts: Effect of Ni loading on the catalytic activity and on H2/CO production

Cited by 56 publications

References 43 publications

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

A review on plasma-catalytic methanation of carbon dioxide – Looking for an efficient catalyst

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

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