title: Synthesis, spectral investigation and catalytic aspects of entrapped VO(IV) and Cu(II) complexes into the supercages of zeolite-Y.
abstract: VO(IV) and Cu(II) complexes with Schiff base ligand derived from 1-phenyl-3-methyl-4-formyl-2-pyrazolin-5-one (PMFP) and 2-amino phenol have been synthesized as their neat and entrapped complexes into the supercages of zeolite-Y. The compounds were characterized by chemical analysis (ICP-OES and elemental), electronic and/or UV reflectance spectra, FTIR spectroscopy, X-ray powder diffraction patterns, SEMs, BET and thermogravimetric (TG) analysis. All the prepared catalysts were tested on the liquid phase limonene oxidation reaction, using 30% H2O2 as an oxidant. Limonene glycol, carveol, carvone and limonene 1,2-epoxide were the main products obtained. It was observed that zeolite-Y entrapped complexes exhibited higher catalytic activity than neat complexes. The catalysts undergo no metal leaching and can be easily recovered and reused. The use of inexpensive catalyst and oxidant are significant practical advantages of this environmentally friendly process.
authors.affiliation: Department of Applied Chemistry, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda, Vadodara 390 001, Gujarat, India. Electronic address: chetanmodi-appchem@msubaroda.ac.in.
authors.forename: Chetan K
authors.initials: CK
authors.lastname: Modi
authors.affiliation: Department of Applied Chemistry, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda, Vadodara 390 001, Gujarat, India.
authors.forename: Bhagyashree G
authors.initials: BG
authors.lastname: Gade
authors.affiliation: Department of Chemistry, M. K. Bhavnagar University, Bhavnagar 364 002, Gujarat, India.
authors.forename: Jiten A
authors.initials: JA
authors.lastname: Chudasama
authors.affiliation: Department of Chemistry, M. K. Bhavnagar University, Bhavnagar 364 002, Gujarat, India.
authors.forename: Digvijay K
authors.initials: DK
authors.lastname: Parmar
authors.affiliation: Department of Chemistry, M. K. Bhavnagar University, Bhavnagar 364 002, Gujarat, India.
authors.forename: Haresh D
authors.initials: HD
authors.lastname: Nakum
authors.affiliation: Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 001, Gujarat, India.
authors.forename: Arun L
authors.initials: AL
authors.lastname: Patel
mesh_terms: D002384:Catalysis; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D053138:Cyclohexenes / Q000737:chemistry*; D000077222:Limonene; D010084:Oxidation-Reduction; D047069:Pyrazolones / Q000138:chemical synthesis / Q000737:chemistry*; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry*; D014638:Vanadates / Q000138:chemical synthesis / Q000737:chemistry*; D017641:Zeolites / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D053138:Cyclohexenes; D047069:Pyrazolones; D012545:Schiff Bases; D013729:Terpenes; D017641:Zeolites; C075743:oxovanadium IV; D014638:Vanadates; D003300:Copper; D000077222:Limonene
keywords: Oxidation of limonene; Pyrazolone based Schiff base ligand; Zeolite-Y entrapped complexes