Phosphotungstic acid loaded on hydrophilic ionic liquid modified SBA-15 for selective oxidation of alcohols with aqueous H2O2

Tan, Rong; Liu, Cheng; Feng, Na; Xiao, Jun; Zheng, Weiguo; Zheng, Anmin; Yin, Daqiang

doi:10.1016/j.micromeso.2012.03.023

Cited by 59 publications

(45 citation statements)

References 39 publications

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“…It is known to all that the Keggin-type [PW 12 O 40 ] 3´( PW) can be degraded to peroxo-active species, [PW 4 O 8 (O 2 ) 8 ] 3´s pecies, by excess hydrogen peroxide, which is the active species in alkenes epoxidations [25]. The solvent has a great influence on the activity of catalytic reaction and acetonitrile is commonly used in epoxidation reaction as an efficient solvent.…”

Section: Catalytic Performancesmentioning

confidence: 99%

Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation

Jiang

Wang

et al. 2015

Catalysts

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An inorganic-organic porous silica network catalyst was prepared by linking silica nanoparticles using ionic liquid and followed by anion-exchange with phosphotungstate. Characterization methods of FT-IR, TG, SEM, TEM, BET, etc., were carried out to have a comprehensive insight into the catalyst. The catalyst was used for catalyzing cyclooctene epoxidation with high surface area, high catalytic activity, and convenient recovery. The conversion and selectivity of epoxy-cyclooctene could both reach over 99% at 70˝C for 8 h using hydrogen peroxide (H 2 O 2 ) as an oxidant, and acetonitrile as a solvent when the catalyst was 10 wt. % of cyclooctene.

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Section: Catalytic Performancesmentioning

confidence: 99%

Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation

Jiang

Wang

et al. 2015

Catalysts

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“…This system diminishes also the problems with the tungsten leaching and allows the separation and reutilization. Tan et al [59] used almost the same strategy to immobilize the H 3 PW 12 O 40 on 1-(3-aminopropyl)-3-propylimidazolium bromine modified SBA 15. They use the ability of the SBA-15 supported ionic liquid to carry out the anionic exchange in order to load the anion on the surface, as well as partly protonated amino groups as accelerators to the catalytic process.…”

Section: Ionic Liquid: Polyoxometalates Hybridsmentioning

confidence: 99%

Hybrid Organic-Inorganic Materials Based on Polyoxometalates and Ionic Liquids and Their Application in Catalysis

Ivanova

2014

ISRN Chemical Engineering

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An overview of the recent advances in the field of polyoxometalate, ionic liquid hybrids, is proposed with a special attention paid to their application in catalysis, more precisely biphasic and heterogeneous catalysis. Both components of the hybrids are separately outlined pointing to their useful properties and potential for catalysis, followed by the description of the hybrids preparation and synergy between components in a large range of organic transformations. And finally a vision on the future developments is proposed.

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“…On the other hand, polyoxometalates (POMs) have been widely utilized as efficient catalysts in various catalytic reactions . Considering the main drawbacks of homogeneous catalysts such as difficult separation of these catalysts from the products, the development of their heterogenized catalysts has attracted great attention . Among the various supports carbon‐based materials have been used to prepare heterogenized catalysts of POMs owing to their distinctive properties.…”

Section: Introductionmentioning

confidence: 99%

Heterogenized peroxopolyoxotungstate catalyst on the surface of clicked magnetite‐graphene oxide nanocomposite: Magnetically recoverable epoxidation catalyst

Masteri‐Farahani

Modarres

2017

Applied Organom Chemis

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A new heterogeneous catalyst for the epoxidation of olefins was prepared by immobilization of peroxophosphotungstate anions on the surface of clicked magnetite‐graphene oxide as magnetically recoverable support. To prepare the heterogeneous catalyst, the clicked magnetite‐graphene oxide support was prepared by thiolene click reaction of thiol functionalized graphene oxide with vinyl modified magnetite nanoparticles. The tailored support was then modified with aminopropyl groups followed by electrostatic interaction with peroxophosphotungstate anions to achieve the desired heterogeneous catalyst. Characterization of the catalyst was performed by various physicochemical methods which confirmed the successful immobilization of peroxopolyoxotungstate species on the surface of clicked magnetite‐graphene oxide. Catalytic activity of the catalyst revealed its high catalytic activity and selectivity in the epoxidation of various olefins in the presence of H2O2 as green oxidant. This heterogeneous catalyst can be magnetically reused several times without significant loss of activity and selectivity.

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Phosphotungstic acid loaded on hydrophilic ionic liquid modified SBA-15 for selective oxidation of alcohols with aqueous H2O2

Cited by 59 publications

References 39 publications

Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation

Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation

Hybrid Organic-Inorganic Materials Based on Polyoxometalates and Ionic Liquids and Their Application in Catalysis

Heterogenized peroxopolyoxotungstate catalyst on the surface of clicked magnetite‐graphene oxide nanocomposite: Magnetically recoverable epoxidation catalyst

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