Vanadium phosphorus oxide as an efficient catalyst for hydrocarbon oxidations using hydrogen peroxide

Pillai, Unnikrishnan R.; Sahle‐Demessie, Endalkachew

doi:10.1039/b209268a

Cited by 66 publications

(52 citation statements)

References 31 publications

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“…Moreover, it has been reported [22] that acetonitrile, upon reaction with H 2 O 2 , forms the peroxycarboximidic acid MeCA C H T U N G T R E N N U N G (=NH)OOH that is a good oxygen transfer agent.…”

Section: Effect Of the Amount And Type Of Solventmentioning

confidence: 99%

Half‐Sandwich Scorpionate Vanadium, Iron and Copper Complexes: Synthesis and Application in the Catalytic Peroxidative Oxidation of Cyclohexane under Mild Conditions

Silva¹,

Alegria²,

Martins³

et al. 2008

Adv Synth Catal

135

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Abstract:The new half-sandwich scorpionate complexes [hydridotris(1-pyrazolyl)methane]vanadium trichloride, ([VCl 3 {HC(pz) were synthesized, characterized and shown to act, as well as the related (tripyrazolylmethane)copper dichloride, [CuCl 2 {HC(pz) 3 }] 6, as selective catalysts (or catalyst precursors) for the peroxidative oxidation (with hydrogen peroxide) of cyclohexane to cyclohexanol and cyclohexanone, under mild conditions (at room temperature and using an aqueous solution of H 2 O 2 ). The iron complexes are the most active ones (reaching TON values up to ca. 690), the effects of a variety of factors are reported and the reaction is shown to proceed via both C-and O-centred radical mechanisms, conceivably involving a metal-based oxidant.

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Section: Effect Of the Amount And Type Of Solventmentioning

confidence: 99%

Half‐Sandwich Scorpionate Vanadium, Iron and Copper Complexes: Synthesis and Application in the Catalytic Peroxidative Oxidation of Cyclohexane under Mild Conditions

Silva¹,

Alegria²,

Martins³

et al. 2008

Adv Synth Catal

135

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“…Selective oxidation of cyclohexane to cyclohexanol and cyclohexanone using air/O 2 or other oxidants is the topic of many recent studies [2,5,[10][11][12][13][14][15]. These two major products are important intermediates in the manufacturing of nylon-6 and nylon-6,6 polymers and other products [15].…”

Section: Introductionmentioning

confidence: 98%

“…These two major products are important intermediates in the manufacturing of nylon-6 and nylon-6,6 polymers and other products [15]. Therefore, a major challenge in this field is to find reaction pathways that afford the primary product with high selectivity, high turnover numbers (TON) at relatively high conversion of the hydrocarbon [2].…”

Section: Introductionmentioning

confidence: 99%

“…Catalysts containing vanadium oxides either pure or mixed with other metal oxides are known to be highly efficient catalysts in many homogeneous oxidation reactions [1,2]. Nevertheless, the use of heterogeneous catalysts offers several advantages such as easy recovery and recycling of catalysts as well as minimization of undesired toxic wastes.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Catalytic Performance of Al2O3, TiO2 and SiO2 Supported Vanadium Based-Catalysts for C–H Activation

Aboelfetoh

Pietschnig

2008

Catal Lett

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A series of Al 2 O 3 , SiO 2 and TiO 2 -supported vanadium oxide catalysts with different vanadium loadings has been prepared by two different methods: wet impregnation using ammonium metavanadate as a vanadium precursor and grafting using VOCl 3 . Characterization of these catalysts by XRD, FTIR, TEM, SEM, EDX, DR and TGA techniques revealed that the structure of vanadium oxide VO x species depends on the preparation method, the type of the support and loadings of vanadium on the oxides surfaces. Monomeric vanadium oxide species are predominant at low vanadium loadings while polymeric vanadium oxide species increase with higher loadings. The catalytic activity of the prepared catalysts was evaluated for the liquid-phase oxidation of cyclohexane as a model reaction to obtain cyclohexylhydroperoxide, cyclohexanol and cyclohexanone with PCA as co-catalyst. The results show that the catalysts exhibit good cyclohexane conversion and remarkable selectivity to the target products and high turnover numbers (TON).

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“…As for H 2 O 2 , it needs to be activated. Several heterogeneous catalysts, [20][21][22][23][24] selenium compounds, 25,26 and metal complexes [27][28][29] have been used. Also, the use of a fluorous biphasic system 30 To the best of our knowledge, only three papers reported BaeyerVilliger oxidation in commercial ionic liquids, but one 54 used the dangerous m-chloroperbenzoic acid as oxidant, while cyclohexanone was unreactive under the conditions of the second.…”

Section: Introductionmentioning

confidence: 99%

The Pt(ii)-catalyzed Baeyer–Villiger oxidation of cyclohexanone with H2O2 in ionic liquids

et al. 2005

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Vanadium phosphorus oxide as an efficient catalyst for hydrocarbon oxidations using hydrogen peroxide

Cited by 66 publications

References 31 publications

Half‐Sandwich Scorpionate Vanadium, Iron and Copper Complexes: Synthesis and Application in the Catalytic Peroxidative Oxidation of Cyclohexane under Mild Conditions

Half‐Sandwich Scorpionate Vanadium, Iron and Copper Complexes: Synthesis and Application in the Catalytic Peroxidative Oxidation of Cyclohexane under Mild Conditions

Preparation and Catalytic Performance of Al2O3, TiO2 and SiO2 Supported Vanadium Based-Catalysts for C–H Activation

The Pt(ii)-catalyzed Baeyer–Villiger oxidation of cyclohexanone with H2O2 in ionic liquids

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