Ru3+-exchanged supported 12-tungstophosphoric acid was synthesized, characterized and used for solvent-free
liquid phase aerobic oxidation of styrene under mild reaction conditions. The present catalyst gives 100 % conversion of
styrene with >99 % selectivity for benzaldehyde. The catalyst can also be regenerated and reused.
Keywords: Aerobic, heteropolyacid, oxidation, ruthenium, solvent-free, styrene.
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