Ni nanocatalysts supported on mesoporous Al₂O₃-CeO₂ for CO₂ methanation at low temperature.

ABSTRACT: The selectivity and activity of a nickel catalyst for the hydrogenation of carbon dioxide to form methane at low temperatures could be enhanced by mesoporous Al₂O₃-CeO₂ synthesized through a one-pot sol-gel method. The performances of the as-prepared Ni/Al₂O₃-CeO₂ catalysts exceeded those of their single Al₂O₃ counterpart giving a conversion of 78% carbon dioxide with 100% selectivity for methane during 100 h testing, without any deactivation, at the low temperature of 320 °C. The influence of CeO₂ doping on the structure of the catalysts, the interactions between the mesoporous support and nickel species, and the reduction behaviors of Ni²⁺ ions were investigated in detail. In thi

SUBMITTER: Wu Y 

PROVIDER: S-EPMC9048714 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature