Synthesis, characterization and catalytic properties of MoO2(acac)2 immobilized on nanostructured polyaniline

Preparation and characterization of catalysts are highlighted in this study.In particular,nonosized materials offer an awarding challenge with the respect of elucidation reaction pathways on structured catalytic surfaces,leading eventually to significant improvements in catalyst performance[1]. Polyaniline is one of the most versatile conducting polymers which have been extensively investigated due to its remarkable properties,such as tunable electrical conductivity ,inexpensive monomer,facile synthesisand good environmentalstability [2]. In the present study,PANInanoparticles were synthesized by polymerization techniques using Ammonium persulfate as oxidizing agent.For the synthesis of a heterogeneous catalyst polyaniline/Mo,complex MoO2(acac)2 was loaded onto the surface of the modified polyaniline nanoparticles.This catalyst was as an efficient catalyst for epoxidation of ciscyclooctene and wide variety of alkenes,including aromatic and aliphatic terminal ones using tert-butylhydroperoxide(TBHP) as oxidant.This new heterogeneouscatalyst could easily be recovered and reused four consecutive with no loss of activity. The new catalyst was characterized by FT-IR,CHNS,ICP, TGA and FE-SEM.