Monometallic gold and bimetallic gold-iron catalysts supported on alumina were prepared in order to check their activity and selectivity in the reaction of cyclohexene oxidation. Au/Al2O3was prepared by a deposition precipitation with urea (DPU) method, while the bimetallic catalyst Au-Fe/Al2O3was prepared by under potential deposition (UPD). The characterization by ICP and EDS showed that very small amount of iron are deposited near gold nanoparticles. However, TEM images showed that the deposition method of iron induced gold nanoparticles sintering. All catalysts were tested in the reaction of cyclohexene oxidation in order to check the influence of both the size of gold particles and the presence of iron on the catalytic activity and selectivity. Small gold nanoparticles were shown be efficient in cyclohexene oxidation where the presence of iron influenced widely the selectivity towards the formation of cyclohexene oxide.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.