Zeolite-Y encapsulated metal complexes of oxovanadium(VI), copper(II) and nickel(II) as catalyst for the oxidation of styrene, cyclohexane and methyl phenyl sulfide

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

doi:10.1016/j.molcata.2007.05.018

Cited by 129 publications

(48 citation statements)

References 21 publications

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“…In the catalytic point of view, SBA-VO(acac) is superior to the reported heterogeneous catalysts. Despite the room temperature reactions are economic and eco-friendly, most of the C=C bond cleavage reactions were reported at and above 70°C [41,42,44], however the activity is comparable to that of present SBA-VO(acac) catalyst. Dhakshinamoorthy et al [45] reported a clay anchored iron-salen complex for the oxidation of C=C bond cleavage in the presence of oxygen using 30% H 2 O 2 as a terminal oxidant at room temperature for 24 h. Under the optimized conditions, the yield of benzaldehyde is only 30%, whereas in the present study it is 78% (Table 3, entry 1).…”

Section: Oxidative Cleavage Of C=c Bond Of Styrenementioning

confidence: 76%

Oxidative Cleavage of C=C Bond of Styrene and Its Derivatives with H2O2 using Vanadyl (IV) Acetylacetonate Anchored SBA-15 Catalyst

et al. 2011

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Section: Oxidative Cleavage Of C=c Bond Of Styrenementioning

confidence: 76%

Oxidative Cleavage of C=C Bond of Styrene and Its Derivatives with H2O2 using Vanadyl (IV) Acetylacetonate Anchored SBA-15 Catalyst

et al. 2011

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“…Zeolites have been widely used in industry as shape-selective catalysts and adsorbents due to their specific features (hydrothermal stability and many active sites and so forth) [1,2]. Their intricate channels and pores contribute to the development of the intracrystalline surface area at which a large number of catalytic and adsorptive sites can be generated [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and hydrophobic adsorption properties of microporous/mesoporous hybrid materials

Qiao

et al. 2009

Journal of Hazardous Materials

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a b s t r a c tHybrid materials of silicalite-1 (Sil-1)-coated SBA-15 particles (MSs) have been successfully synthesized by crystallization process under hydrothermal conditions. These MSs materials were characterized by X-ray diffraction, nitrogen adsorption/desorption and TEM techniques, which illustrated that the silicalite-1-coated SBA-15 particles were successfully prepared and had large pore volume and hierarchical pore size distribution. Further experimental studies indicated that longer crystallization time under basic condition caused the mesostructure of SBA-15 materials to collapse destructively and higher calcination temperature tended to disrupt the long-range mesoscopic order while they had little influence on the phase of microcrystalline silicalite-1 zeolite. The resultant MSs materials were investigated by estimating dynamic adsorption capacity under dry and wet conditions to evaluate their adsorptive and hydrophobic properties. The hydrophobicity index (HI) value followed the sequence of silicalite-1 > MSs > SBA-15, which revealed that the SBA-15 particles coated with the silicalite-1 seeds enhanced the surface hydrophobicity, and also were consistent with FTIR results. Our studies show that MSs materials combined the advantages of the ordered mesoporous material (high adsorptive capacity, large pore volume) and silicalite-1 zeolite (super-hydrophobic property, high hydrothermal stability), and the presence of micropores directly led to an increase in the dynamic adsorption capacity of benzene under dry and wet conditions.

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“…Analytical data suggest that the metal-ligand stoichiometry is 1:1. The complexes (1), (2) and (3) showed a sharp band in the range 1,608-1,634 cm -1 attributable to the azomethine group of Schiff base ligand [32,33].…”

Section: Resultsmentioning

confidence: 99%

Homogenous and Heterogeneous Catalytic Activity of Azo-Linked Schiff Base Complexes of Mn(II), Cu(II) and Co(II)

Lashanizadegan

Zareian

2011

Catal Lett

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Azo linked Schiff-base[L] complexes of Mn(II)(1), Cu(II)(2) and Co(II)(3) obtained by template method, in the reaction of 4-(benzeneazo) salicylaldehyde with 1,2-propanediamine in the present of metal acetate, respectively. Complexes are used as catalyst for oxidation of cyclohexene with tert-butylhydroperoxide (TBHP); oxidation of cyclohexene catalyzed by these complexes gave 2-cyclohexene-1-one and 2-cyclohexene-1-ol as major products. Conversion of cyclohexene achieved was 95-100% with (1), (2) and (3), with selectivity of 57, 92 and 100% for 2-cyclohexene-1-one, respectively. The encapsulated Cu(II) complex (Cu-NaY) catalyzes the oxidation of cyclohexene using TBHP as oxidant in good yield. (Cu-NaY) under optimized reaction condition gave three reaction products. A maximum of 100% conversion of cyclohexene has been achieved where selectivity of 2-cyclohexene-1-one was 83%.

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Zeolite-Y encapsulated metal complexes of oxovanadium(VI), copper(II) and nickel(II) as catalyst for the oxidation of styrene, cyclohexane and methyl phenyl sulfide

Cited by 129 publications

References 21 publications

Oxidative Cleavage of C=C Bond of Styrene and Its Derivatives with H2O2 using Vanadyl (IV) Acetylacetonate Anchored SBA-15 Catalyst

Oxidative Cleavage of C=C Bond of Styrene and Its Derivatives with H2O2 using Vanadyl (IV) Acetylacetonate Anchored SBA-15 Catalyst

Synthesis and hydrophobic adsorption properties of microporous/mesoporous hybrid materials

Homogenous and Heterogeneous Catalytic Activity of Azo-Linked Schiff Base Complexes of Mn(II), Cu(II) and Co(II)

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