Novel Ni-La-hydrotalcite derived catalysts for CO2 methanationReport as inadecuate




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* Corresponding author 1 AGH University of Science and Technology Pologne 2 DALEMBERT - Institut Jean Le Rond d-Alembert

Abstract : A series of hydrotalcite-derived mixed oxides containing Ni-Mg-La-Al obtained by thermal decomposition were characterized by XRD, CO 2-TPD and H 2-TPR. The results confirm the formation of periclase-like materials, and the addition of lanthanum resulted in the formation of a separate phase. The incorporation of 2 wt.% of lanthanum leads to an increase of the catalytic performance at temperatures from 250 to 300°C with CO 2 conversion of 46.5-75% and CH 4 selectivity of 99-98%. The activity is directly connected with basicity that increases with the incorporation of La into the HT-derived catalysts.

Keywords : CO 2 methanation hydrotalcite nickel Lanthanum 2





Author: Dominik Wierzbicki - Radosław Debek - Monika Motak - Teresa Grzybek - Maria Elena Gálvez - Patrick Da Costa -

Source: https://hal.archives-ouvertes.fr/



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