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

Autor:	Andrzej Krztoń, Waldemar Krajewski, Małgorzata Adamowska-Teyssier, Krzysztof Kozieł, Wincenty Turek, Monika Radlik, Patrick Da Costa
Rok vydání:	2015
Předmět:	Materials science Carbon dioxide reforming Hydrogen General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Chemistry Methane Catalysis Thermogravimetry Nickel chemistry.chemical_compound chemistry Chemical engineering Agglomerate Carbon
Zdroj:	Comptes Rendus Chimie. 18:1242-1249
ISSN:	1631-0748
DOI:	10.1016/j.crci.2015.03.008
Popis:	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, S BET , SEM, TPD-CO 2 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 CO 2 and CH 4 and an optimum ratio H 2 /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.
Databáze:	OpenAIRE
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