Highlights•Rare earth cation-containing layered double hydroxides as catalyst precursors.•Effective catalysts for methane total oxidation.•The Ce-containing catalyst was the most active.•The catalytic activity depended on the Ce content.•The catalyst reducibility played a key role in the catalytic reaction.
AbstractUnsupported and γ-Al2O3-supported Ba and Pb titanate catalysts were prepared, characterized and studied in the combustion of methane, as a test reaction for VOCs’ catalytic combustion. They present good catalytic activities, and after dispersion (5%) on γ-Al2O3 the specific activity of the supported perovskite phase increased 25 and 30 times, respectively, compared with the unsupported samples. PbTiO3/γ-Al2O3 shows the best catalytic properties among the tested samples.