A novel method for development of magnetically recoverable catalysts is based on thermal decomposition of palladium or ruthenium acetylacetonates in the presence of iron oxide NPs. Depending on conditions, the reaction results either in a dispersed mixture of catalytic and magnetic NPs or in their aggregates. The aggregation caused by polarization and magnetic forces allows faster magnetic separation and can be controlled by varying the reaction temperature and the quality of solvent. The catalytic properties of these mixtures have been studied in hydrogenation of nitrobenzene and alkyne alcohols for Ru- and Pd-containing mixtures, respectively. It is revealed that coexistence of the Ru/Pd and iron oxide NPs in the catalyst as well as the proximity of two different NP types lead to significantly higher activity and selectivity. The catalytic properties are also influenced by the type of iron oxide NPs present in the catalytic samples.

Design of magnetically recoverable catalysts via controlled aggregation of iron oxide and catalytic nanoparticles

249th National Meeting (2015)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.