Polymeric resins as nano-catalysts: A brief review

School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492 010, Chhattisgarh, India E-mail: debmanas@yahoo.com Manuscript received online 09 June 2020, accepted 28 August 2020 Ion exchange resins (IERs) or polymers are cross linked, high molecular weight, water insoluble, polyelectrolytes. They have specific features like cross-linking, ion exchange capacity, particle size, swelling, porosity and acid base strength. Generally, resins have suitably substituted acidic groups like sulfonic and carboxylic groups attached for cation exchangers, and alkaline groups like quaternary ammonium group for anion exchangers. The materials i.e. nanoparticles are immobilized or loaded on the surface of IER are commonly known as nanocomposites. These metal supported resins as nano-catalyst have useful applications in catalysis reactions (i.e. reduction, oxidation, hydroformylation reaction, hydrodehalogenation reaction, crosscoupling reaction and catalytic transfer hydrogenation etc.). In this review, the synthetic processes and basic chemical principles of IERs involving ion exchange processes, and nanocatalytic applications of metal supported IERs have been discussed