期刊
COMPTES RENDUS CHIMIE
卷 18, 期 11, 页码 1205-1210出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2015.04.005
关键词
Dry reforming; Methane; CO2; Hydrotalcite; Nickel
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, H-2-TPR, N-2 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 degrees C. The high values of the H-2/CO molar ratio indicate that at 550 degrees C methane decomposition was strongly influencing the DRM process. The sample reduced at 900 degrees C showed better catalytic performance than the sample activated at 550 degrees C. The catalytic performance in isothermal conditions from 550 degrees C to 750 degrees C was also determined. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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