Unsupported versus alumina-supported Ni nanoparticles as catalysts for steam/ethanol conversion and CO2 methanation
- Paola Riani
- Gabriella Garbarino
- Mattia Alberto Lucchini
- Fabio Canepa
- Guido Busca
DOIAbstract
Nickel nanoparticles (NPs, particle radius <8 nm) were prepared via reduction method in aqueous solution and were structurally and morphologically characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). A DC-SQUID magnetometer was also used to determine the particle size. As a reference, a high loading (125% Ni wtNi/wtsupport) Ni/Al2O3, prepared through wet impregnation technique, was also studied. The results of the catalytic tests in ethanol conversion in the presence of steam on unsupported Ni NPs at 523 K show already an ethanol conversion higher than 90% together with high yields in methane, CO and H2. These NPs actually behave as very active ethanol decomposition catalysts, in these conditions. Increasing the ...
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