Aerobic Oxidation of Alcohols and Olefins Using Ru NPs Decorated on Functionalized PNIPAM Grafted Magnetic Nanoparticles

ABSTRACT A thermo‐responsive ruthenium catalyst was produced by immobilizing poly( N ‐isopropyl acrylamide) on the silica surface coated iron oxide nanoparticles (Fe 3 O 4 @Si). After being exposed to ethylenediamine, the amino‐modified support (Fe 3 O 4 @Si‐PNIPAM‐NH 2 ) was produced, and Fe 3 O 4 @Si‐PNIPAM‐NH 2 ‐EDTA was made in the ensuing reaction with EDTA (ethylenediaminetetraacetic acid). Ru NPs were introduced to the modified magnetic support to create a well‐organized heterogeneous catalytic system with several advantages, such as enabling catalyst recycling and simple separation. This new catalyst was characterized by means of various techniques, including TGA, ICP, FT‐IR, DLS, TEM, SEM, EDX, VSM, XRD, CHN, and XPS. In the presence of H 2 O 2 or air alone, this catalyst showed a significant effect in the oxidation of various alcohols to the corresponding aldehydes or ketones. Furthermore, the catalyst exhibited outstanding capacity in the aerobic oxidation of olefines to the carbonyl or oxirane counterparts. A main aspect of this catalytic system is the reusability of the catalyst at least eight times in consecutive runs without causing any discernible loss of activity, structural change, or leaching.