A study of Ni/La-Al2O3 catalysts: A competitive system for CO2 methanation

Ni/La-γ-Al2O3 samples containing 13.6 wt.% Ni and a variable amount of lanthana (0, 4, 14 and 37 wt.%) were prepared by incipient wetness impregnation, using silica-free γ-Al2O3 support. The materials were characterized, as such or after reaction, with XRD, H2-TPR, IR, UV–vis-NIR, XPS and FE-SEM techniques. They were tested as catalysts for CO2 methanation at atmospheric pressure at GHSV 55000 h−1. The reaction is under kinetic control at T <...