Ni–Al hydrotalcite-like material as the catalyst precursors for the dry reforming of methane at low temperature - 20/11/15
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Abstract |
Nickel–aluminium and magnesium–aluminium hydrotalcites were prepared by co-precipitation and subsequently submitted to calcination. The mixed oxides obtained from the thermal decomposition of the synthesized materials were characterized by XRD, H2-TPR, N2 sorption and elemental analysis and subsequently tested in the reaction of methane dry reforming (DRM) in the presence of excess of methane (CH4/CO2/Ar=2/1/7). DMR in the presence of the nickel-containing hydrotalcite-derived material showed CH4 and CO2 conversions of ca. 50% at 550°C. The high values of the H2/CO molar ratio indicate that at 550°C methane decomposition was strongly influencing the DRM process. The sample reduced at 900°C showed better catalytic performance than the sample activated at 550°C. The catalytic performance in isothermal conditions from 550°C to 750°C was also determined.
Le texte complet de cet article est disponible en PDF.Keywords : Dry reforming, Methane, CO2, Hydrotalcite, Nickel
Plan
Vol 18 - N° 11
P. 1205-1210 - novembre 2015 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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