Two model nickel catalysts for CO2 methanation reaction were prepared by the impregnation method using unmodified and dealuminated BEA-type zeolite supports, denoted NiHAlBEA NiSiBEA. Transmission electron microscopy (TEM) X-ray diffraction studies evidenced formation of metallic crystallites different size, partially located on external surface grains in catalyst small nanoparticles uniformly ...
