Article history: The synthetic protocols for entrapment of transition metal complexes reported here are to expand the Received 11 January 2016 diversity in catalysis made possible by the ability of microporous solid to select reactants, transition states, Received in revised form 21 January 2016 and products based on their molecular size. Herein, we report a synthetic route for the entrapment of tran- Accepted 21 January 2016 sition metal complexes within the nanopores of zeolite-Y. The complexes of transition metals [M = Fe(II), Available online 24 January 2016 VO(IV)] with Schiff base ligands that are synthesized by simple condensation of 2-hydroxyacetophenone and/or 2-hydroxy-5-chloroacetophenone with ethylenediamine have been entrapped within nanopores Keywords: of zeolite-Y by ﬂexible ligand method. These materials have been characterized by various physicochemi- Zeolite-Y entrapped complexes 1 13 cal and spectroscopic techniques such as ICP-OES, FT-IR, H and C NMR, elemental analyzes, and UV–vis Schiff base ligand electronic spectral studies, BET, TGA, scanning electron micrographs (SEMs), X-ray diffraction patterns Oxidation of cyclohexene (XRD), conductivity, magnetic susceptibilities as well as AAS. These synthesized catalysts have been uti- Optimization of reaction parameters lized as heterogeneous catalysts for liquid phase oxidation of cyclohexene. The reaction parameters have been tuned to optimize
Journal of Molecular Catalysis A: Chemical – Elsevier
Published: May 1, 2016
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