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

Autor:	Patrick Da Costa, Teresa Grzybek, Monika Motak, Katarzyna Zubek, Maria Elena Galvez, Radosław Dębek
Rok vydání:	2015
Předmět:	Carbon dioxide reforming Hydrotalcite Chemistry General Chemical Engineering Thermal decomposition Inorganic chemistry Sorption General Chemistry Methane Isothermal process law.invention Catalysis chemistry.chemical_compound law Calcination Nuclear chemistry
Zdroj:	Comptes Rendus Chimie. 18:1205-1210
ISSN:	1631-0748
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eee2663f9fa405279274141aaa1e3d79 https://doi.org/10.1016/j.crci.2015.04.005 Zobrazit plný text záznamu