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In this work, we report the use of oxovanadium phosphate as support of the 5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrin iron (III) chloride (Fe(TDCPP)Cl) and of the 5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrin manganese (III) chloride (Mn(TDCPP)Cl) catalysts for cyclohexane and cyclooctene oxidations by iodosylbenzene. The catalytic results have shown that oxovanadium phosphate support is suitable for metalloporphyrin catalysts leading to an efficient system for the cyclooctene epoxidation and very selective for cyclohexane hydroxylation.

Complex structures based on “host−guest” systems make possible the development of new materials with promising technological applications. In this work, we synthesized a V2O5·nH2O/surfactant (N-cetyl-N,N,N,-trimethylammonium bromide) composite that presented an improved charge capacity and stability on electrochemical response in relation with a V2O5·1.9H2O matrix. CTA+ intercalated into the V2O5 lamellar structure favors the kinetics of VIV/VV solid-state redox transitions. Moreover, the spectroelectrochemical behavior was verified even after several successive redox cycles.