Ni-containing CeO2 rods for dry reforming of methane: Activity tests and a multiscale lattice Boltzmann model analysis in two model geometries

Abstract Experimental and theoretical modeling on low-temperature dry methane reforming over Ni-containing CeO2 rods was studied. The catalyst characterized by means of N2 physisorption, in-situ XRD, TPR H2 chemisorption techniques. characterization studies revealed the distortion flourite structure due to Ni incorporation. Lattice expansion (due reduction) contraction oxidation) suggest reversible redox nature CeO2. Ni–O–Ce solid solution formation evidenced both XRD studies. study that reduction temperature plays a significant role in dispersion. showed similar activity trends two model geometries: between-two-plates microchannel fixed-bed reactor conventional reactor. tests were conducted kinetic regime, where conversions CH4 not influenced with gas flow rate. A lattice Boltzmann for mixed developed along boundary condition catalytic sites. used multiscale simulation studied reaction systems produced data qualitatively matched experiments.