Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

Paulina Summa; Katarzyna Świrk; Dominik Wierzbicki; Monika Motak; Ivo Alxneit; Magnus Rønning; Patrick Da Costa

doi:10.3390/molecules26216506

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO₂ Methanation

Molecules. 2021 Oct 28;26(21):6506. doi: 10.3390/molecules26216506.

Authors

Paulina Summa^{1

2}, Katarzyna Świrk³, Dominik Wierzbicki^{2

4}, Monika Motak², Ivo Alxneit⁴, Magnus Rønning³, Patrick Da Costa¹

Affiliations

¹ Institut Jean Le Rond d'Alembert, Sorbonne Université, CNRS UMR 7190, 78210 Saint-Cyr-L'Ecole, France.
² Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Kraków, Poland.
³ Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.
⁴ Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland.

Abstract

Co-precipitated Ni-Mg-Al hydrotalcite-derived catalyst promoted with vanadium were synthesized with different V loadings (0-4 wt%) and studied in CO₂ methanation. The promotion with V significantly changes textural properties (specific surface area and mesoporosity) and improves the dispersion of nickel. Moreover, the vanadium promotion strongly influences the surface basicity by increasing the total number of basic sites. An optimal loading of 2 wt% leads to the highest activity in CO₂ methanation, which is directly correlated with specific surface area, as well as the basic properties of the studied catalysts.

Keywords: CO2 hydrogenation; hydrotalcite; methanation; mixed oxides; nickel catalyst; vanadium.