Oxovanadium(IV) and copper(II) complexes of 1,2-diaminocyclohexane based ligand encapsulated in zeolite-Y for the catalytic oxidation of styrene, cyclohexene and cyclohexane

Maurya, Mannar R.; Chandrakar, Anil Kumar; Chand, Shri

doi:10.1016/j.molcata.2007.02.005

Cited by 112 publications

(38 citation statements)

References 28 publications

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“…The catalytic oxidation of styrene gives the products styrene oxide, benzaldehyde, benzoic acid, phenyl acetic acid and 1-phenyl etheane-1,2-diol and other side products [28]. In the present study oxidation of styrene catalysed by the VO(IV) and Mn(III) complexes was carried out.…”

Section: Oxidation Of Styrenementioning

confidence: 91%

Synthesis, characterization, electrical and catalytic studies of some coordination compounds derived from unsymmetrical Schiff base ligand

Pethe¹,

Yaul²,

Aswar³

2015

Bull. Chem. Soc. Eth.

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ABSTRACT. New unsymmetrical tetradentate Schiff base ligand derived from 5-chloro-2-hydroxyacetophenone, 2-hydroxy-5-methyl-3-nitro acetophenone and carbohydrazide and its complexes with VO(IV), Cr(III), Mn(III), Fe(III), MoO2(VI), WO2(VI), Zr(IV) and UO2(VI) have been prepared. They were characterized by elemental analysis, IR and electronic spectra, magnetic susceptibility measurements and thermal analyses. The Schiff base ligand has also been characterised by 1 H-NMR spectroscopy. The thermal behaviour of metal complexes shows that the hydrated complexes lose water molecules of hydration in the first and then is immediately followed by decomposition of ligand molecule in the subsequent steps. The IR spectra suggest that ligand acts as dibasic tetradentate nature and coordination takes place through azomethine nitrogen and phenolate oxygen. The crystalline nature of the VO(IV) complex was conformed through the powder XRD analysis. The catalytic activity of the VO(IV) and Mn(III) complexes have been tested in the epoxidation reaction of styrene and conversion of styrene were 11.14-24.35% and 9.64-23.42%, respectively. The solid state electrical conductivity of ligand and its complexes were measured, which could obeyed the relation  =  0 exp (Ea/KT) over the temperature range 313-413 K.

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Section: Oxidation Of Styrenementioning

confidence: 91%

Synthesis, characterization, electrical and catalytic studies of some coordination compounds derived from unsymmetrical Schiff base ligand

Pethe¹,

Yaul²,

Aswar³

2015

Bull. Chem. Soc. Eth.

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“…Because alcohols and ketones are known as important intermediate materials for the manufacture of many important products such as: fiber, drugs and fragrance. Amongst heterogeneous catalysts, zeolite encapsulated transition metal complexes catalysed oxidation of cyclohexane into a variety of products such as cyclohexanol and cyclohexanone has received much attention [182][183][184]. Maurya and co-workers introduced a new catalyst based on oxovanadium(IV) and copper(II) exchanged zeolite-Y for the oxidation of styrene, cyclohexene and cyclohexane [182].…”

Section: Cyclohexane Oxidation Reactionsmentioning

confidence: 99%

“…As shown in Table 5 Table 5. Effect of different catalysts on the oxidation of cyclohexene and product selectivity [182].…”

Section: Cyclohexane Oxidation Reactionsmentioning

confidence: 99%

From Zeolite to Host-Guest Nanocomposite Materials

Salavati‐Niasari¹,

Mohandes²

2011

Advances in Diverse Industrial Applications of Nanocomposites

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“…Zeolite-encapsulated metal complexes have attracted special attention as modern catalytic systems and as model compounds for enzyme mimicking [1]. In this case, metallocomplexes act as an active site enzyme and the zeolite framework represents a rigid protein mantle of enzymes [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The effect of synthesis method and post-synthesis treatment on the formation of neutral Mn(II) complex into anionic zeolite structure and investigation of its catalytic activity in the epoxidation of alkenes

et al. 2014

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In this study, we improved the catalytic performance of manganese porphyrin encapsulated HY zeolite for alkene epoxidation reaction. For this purpose, Manganese tetra pyridyl porphyrin encapsulated into modified dealuminated Y zeolite (MnTPP-MDAZY) was synthesized using zeolite template synthesis method. This heterogenized catalyst was characterized by FT-IR, UV-Vis, XRD and atomic absorption spectra (AAS) technique. Catalyst loading was 0.263 mmol/g support. In this way, high catalyst loading is probably related to the decrease of the size of metalloporphyrin and the post-synthesis treatment. The latter one causes the increase of the diameter of the mesoporous structure as a result of the dealumination of zeolite with EDTA treatment. High catalyst loading efficiently enhances the epoxidation of alkenes.

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Oxovanadium(IV) and copper(II) complexes of 1,2-diaminocyclohexane based ligand encapsulated in zeolite-Y for the catalytic oxidation of styrene, cyclohexene and cyclohexane

Cited by 112 publications

References 28 publications

Synthesis, characterization, electrical and catalytic studies of some coordination compounds derived from unsymmetrical Schiff base ligand

Synthesis, characterization, electrical and catalytic studies of some coordination compounds derived from unsymmetrical Schiff base ligand

From Zeolite to Host-Guest Nanocomposite Materials

The effect of synthesis method and post-synthesis treatment on the formation of neutral Mn(II) complex into anionic zeolite structure and investigation of its catalytic activity in the epoxidation of alkenes

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