Fixing CO2 into β-Oxopropylcarbamatesin by Palladium NPs Supported on Magnetic Fibrous Silica Ionic Gelation

In this study, a novel magnetic nanoparticles (FeNi 3 ) based palladium NPs with high surface area and easy accessibility of active sites was successfully developed by a facile approach. FeNi 3 was functionalized with ionic gelation groups (IG) acting as the robust anchors so that the palladium nanoparticles were well-dispersed on the FeNi 3 (FeNi 3 /DFNS/IG/Pd), without aggregation. Then, its strength as a nanocatalyst for synthesis of β-oxopropylcarbamates in aqueous medium without any pollutants through a multi component coupling of CO 2 , amines and propargyl alcohols in moderate condition was tested in contact time, initial concentration, and nanocatalyst amount was study. The results of this research proved that FeNi 3 /DFNS/IG/Pd MNPs has a good return synthesis of β-oxopropylcarbamates, as its easy synthesis and reliable recovery, this can be an appropriate catalyst in the case of synthesis of β-oxopropylcarbamates. In addition, protocols like mercury poisoning and hot filtration prepared a full insight in the heterogeneous catalyst nature. The reuse and recycling of the catalyst are investigated for both coupling reactions many times. In addition, the mechanism of the coupling reactions is completely studied. Graphic Abstract Fixing CO 2 into β-oxopropylcarbamatesin by palladium NPs supported on magnetic fibrous silica ionic gelation