Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol

The aim of the study was to establish influence a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth nanostructures) on properties catalytic activity as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with use XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, tested in low-temperature oxidation benzyl alcohol as model reaction. results obtained this indicated that type has significant impact gold species. Immediate nanostructures NaOH allowed obtainment considerably smaller more homogeneous size nanoparticles than those formed by gradual presence hexamethylenetetramine or urea. In tests, it established key factor promoting high nanoparticles. highest conversion observed for catalyst containing smallest Au particle nanocomposite prepared agent).