Sulfur segregation to the surface poses a perplexing problem in basic research on low surface area nickel materials. In addition sulfur effectively poisons catalytic reactions involving CO adsorption on nickel as well as other transition metal catalysts in technically important processes such as methanation and Fischer-Tropsch synthesis. It is not surprising then that considerable attention has...

The increasing share of renewable electricity in the grid drives need for sufficient storage capacity. Especially seasonal storage, power-to-gas can be a promising approach. Biologically produced methane from hydrogen surplus used to substitute natural gas existing infrastructure. Current reactor types are not or poorly optimized flexible methanation. Therefore, this work proposes new type with...

This study investigated carbon monoxide methanation with 15 %NiO doped SAPO-34 zeolite-supported catalysts. The support was produced by hydrothermal synthesis, and nickel oxide added to the impregnation surfactant-assisted method, dissolved in different solvents (water, ethanol, acetone, 1-propanol). Various characterization techniques, N2 physisorption, XRD, SEM, TEM, FTIR, were used determine...

An experimental and kinetic modeling study on the Ni-catalyzed conversion of methane under oxidative and reforming conditions is presented. The numerical model is based on a surface reaction mechanism consisting of 52 elementary-step like reactions with 14 surface and six gas-phase species. Reactions for the conversion of methane with oxygen, steam, and CO2 as well as methanation, water-gas shi...

The valorization of CO2 via renewable energy sources allows one to obtain carbon-neutral fuels through its hydrogenation, like methane. In this study, Ni0.05Ce0.95O2−δ catalysts were prepared using a simple one-pot hydrothermal method yielding nanorod and nanocube particles be used for the methanation reaction. Samples characterized by XRD, BET, TEM, H2-TPR, H2-TPD experiments. catalytic activi...