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hybrid catalysts (i.e. Al 2 O 3 /CuCoL 1 , Al 2 O 3 /CuFeL 2 and Al 2 O 3 /CoVL 3 ) were then applied for the selective oxidation of n -hexane by molecular O 2 , in the absence of solvent. Experimental General

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. Method Quantum chemical calculations were conducted using DFT as implemented in the Gaussian 03 suite of programs [ 45 ]. The chosen DFT method, namely the hybrid B3LYP density functional [ 46 ], combines the exact HF exchange, the Slater local

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Abstract  

Salicylaldimine functionalized SBA-15 hybrid mesoporous material was synthesized by post-grafting of salicylaldehyde modified 3-aminopropyltriethoxysilane and followed by introducing Cu(II) ions into the hybrid material via a ligand exchange reaction. The prepared catalyst was characterized by means of XRD, N2 adsorption/desorption, SEM, FT-IR, UV–vis spectroscopy, EPR and XPS techniques as well as ICP-AES and elemental analysis measurements. The solid catalyst was evaluated in the oxidation of styrene with H2O2 as the oxidant under mild conditions, and the reaction parameters (the molar ratio of styrene/H2O2, amount of catalyst, temperatures, solvents, alkaline additive) were investigated and optimized for the oxidation of styrene. The optimal conversion (77.1%) and yield of styrene oxide (60.0%) were obtained at 80 °C using CH3CN as the solvent under basic conditions. Moreover, the covalently anchored Cu(II) salicylaldimine complex showed good recoverability and high stability against leaching of active copper(II) species.

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Reaction Kinetics, Mechanisms and Catalysis
Authors: Mohammad Saleh Ghodrati, Mohammad Haghighi, Jafar Sadegh Soltan Mohamdzadeh, Behzad Pourabas, and Ehsan Pipelzadeh

)–titanium oxide hybrid materials by sol–gel methods . J Mater Chem 8 1 153 – 159 10.1039/a703624h . 20. Zheng , M , Gu , M , Jin , Y , Jin , G ( 2000 ) Preparation, structure and properties of

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immobilize MPs onto various supports, such as polymer, silica or hybrid materials [ 6 – 10 ]. Among these supports, polymer supports [ 11 – 14 ] have attracted much attention due to their several advantages, which are in some respects analogous to the

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synthesized using resols as polymers/carbon precursors, silicate oligomers as inorganic precursors and triblock copolymer F127 as a template through an easy and reproducible process [ 11 ]. Hybrid nanocomposites have “homogeneous” interpenetrating frameworks

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K α X-ray source (hv = 1486.6 eV), hybrid (magnetic/electrostatic) optics and a multi-channel plate and delay line detector (DLD). Accurate binding energies (±0.1 eV) were determined with respect to the position of the adventitious C 1s peak at 284

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.08.013 . 13. Wu , CH . 2008 . Decolorization of C.I. reactive red 2 in O 3 , fenton-like and O 3 /fenton-like hybrid systems . Dyes Pigments . 77 : 24 – 30 10.1016/j.dyepig.2007.03.002 . 14

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. Park , H , Choi , W , Hoffmann , MR 2008 Effects of the preparation method of the ternary CdS/TiO 2 /Pt hybrid photocatalysts on visible light-induced hydrogen production . J Mater Chem 18 : 2379 – 2385 10.1039/b718759a

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