Influence of the Support on Propene Oxidation over Gold Catalysts

The epoxidation of propene without forming a substantial amount byproducts is one the holy grails catalysis. Supported Cu, Ag and Au catalysts are studied for this reaction activity supported metals generally well understood. On contrary, limited information available on influence support epoxide selectivity. with equal amounts hydrogen oxygen was tested over gold nanoparticles deposited onto CeO2, TiO2, WO3, γ-Al2O3, SiO2, TiO2-SiO2 titanosilicate-1. Several metal oxide supports caused further conversion synthesized oxide. Strongly acidic supports, such as WO3 titanosilicate-1, catalyzed isomerization towards propanal acetone. Key factors achieving high PO selectivity having inert or neutralized surface sites, low specific and/or density -OH groups. This work provides insights practical guidelines to which properties lead products in presence catalysts.