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Synthesis and Characterization of RuâLoaded Anodized Aluminum Oxide for Hydrogenation Catalysis
Abstract Anodized aluminum oxides (AAOs) are synthesized and used as catalyst support in combination with Ru as metal in hydrogenation catalysis. SEM and TEM analysis of the asâsynthesized AAOs reveal uniform, ordered nanotubes with pore diameters of 18â
nm, which are further characterized with Kr physisorption, XRD and FTIR spectroscopy. After impregnation of the AAOs with Ru, the presence of Ru nanoparticles inside the tubular pores is evidenced clearly for the first time via HAADFâSTEMâEDX. The RuâAAOs have been tested for catalytic activity, which showed high conversion and selectivity for the hydrogenation of toluene and butanal