Green oxidation of olefins with hydrogen peroxide catalyzed by an oxovanadium(IV) Schiff base complexes encapsulated in the nanocavity of zeolite-Y

oxovanadium(IV) complexes of a Schiff base ligands bis(2,4-dihydroxyacetophenone)-1,2-propandiimine(H2L1) and bis(2,4-dihydroxyacetophenone)-ethylenediimine (H2L2) were synthesized and characterized. Theencapsulation of these complexes in the nanocavities of the zeolite was achieved by a flexible ligand method. The freecomplexes and the retention of the zeolite encapsulated metal complexes [VOLx–Y, x= 1 & 2] were investigated by severalspectroscopic; FTIR, NMR, AAS, SEM and BET. The catalytic activities of encapsulated complexes were studied in theoxidation of alkenes/H2O2.