Abstract
The CO methanation reaction has been widely used in the fields of synthetic natural gas and ammonia (NH3). This study improves the CO methanation performance using a two-dimensional NiAl-layered double oxide (2D NiAl-LDO) decorated by SiO2 nanoparticles and reduced under hydrogen atmosphere. The as-obtained H–NiAl-LDO/SiO2 exhibited a high specific surface area of 240.5 m2/g and high surface-adsorbed oxygen of 20.77%. Furthermore, it had an excellent CO conversion of 100% at 300 °C and 96.87% at 250 °C, which was much better than those of H–NiAl-LDO (84.03% at 300 °C and 0% at 250 °C). We believe that it provides an additional strategy to easily and effectively improve CO methanation performance and shows potential for the application of similar catalysts.
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