Abstract
Abstract In this work, the application of the thiol-functionalized epoxy resin encapsulated on magnetic core as supports for palladium catalysts is reported. The study focuses on obtaining of heterogeneous catalysts which can be separated by magnetic field. Palladium complex catalyst [PdCl2(PhCN)2] has been heterogenized by anchoring to these supports via ligand exchange reaction. The characterization of polymeric supports and heterogenized palladium catalysts has involved research methods like time-of-flight secondary ion mass spectrometry (TOF-SIMS), scanning electron microscopy (SEM) and nitrogen BET surface area measurements. The activity and stability during long-term use of the investigated catalytic systems were tested in a Heck and hydrogenation reaction. The influence of the type of thiols used as epoxy hardeners and the morphology of the supports on the catalytic properties of epoxy-supported palladium catalysts was discussed.
Highlights
Encapsulation is a process in which some particles are surrounded by a coating to give small capsules with many useful properties
The results demonstrated that the prepared supports meet the requirements for organic supports in that they can be readily synthesized in a form suitable for heterogenization of metal complex catalysts and do not need any further functionalization
It was shown that thiol-functionalized epoxy resins can be used as coating for magnetic core in encapsulation process
Summary
Encapsulation is a process in which some particles are surrounded by a coating to give small capsules with many useful properties. PEOlig -bound Cr(III)-salen and Mn(III)-salen complexes suspended in a non-swelling solvent such as methanol do not react with trifluoroacetic acid in methanol The stability of these metal complexes shows that PE ligands and a PE matrix can have additional utility in recycling catalysts in that the solid state environment of the recovered species can minimize adventitious reactions that decompose a catalyst during catalyst recycling[1]. We describe our approach to prepare the ferromagnetic catalysts by immobilizing the palladium complex on the functionalized epoxy resin. These catalysts were evaluated for their performance in the Heck and hydrogenation reaction.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
