Ni-Al hydrotalcite-like material as the catalyst precursors for the dry reforming of methane at low temperature

作者：Debek Radoslaw^*; Zubek Katarzyna; Motak Monika; Galvez Maria Elena; Da Costa Patrick; Grzybek Teresa

来源：Comptes Rendus Chimie, 2015, 18(11): 1205-1210.

DOI：10.1016/j.crci.2015.04.005

• 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.

• 出版日期2015-11