Synthesis, characterization of VPO catalyst dispersed on mesoporous silica surface and catalytic activity for cyclohexane oxidation reaction

Santra, Chiranjit; Shah, Sneha; Mondal, Aniruddha; Pandey, Jai Krishna; Panda, Asit Baran; Maity, Sudip; Chowdhury, Biswajit

doi:10.1016/j.micromeso.2015.10.046

Cited by 35 publications

(16 citation statements)

References 40 publications

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“…Regardless of the difference in the kind of support used, our catalytic system, even though presenting moderate yields (12%), compares favorably in terms of selectivity to KA oil with others reported in the literature [27,71,72]. Similar selective systems to KA oil were reported by Santra et al and Ottaviani and colleagues [73,74], using silicas and zeolite as supports for vanadium phosphorus oxide and a V-scorpionate complex, respectively, although presenting a higher selectivity to cyclohexanone. Moderate to good yields of KA oil were obtained in these cases (30-50%).…”

Section: Catalytic Tests For the Heterogenized Catalystssupporting

confidence: 81%

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

et al. 2021

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Oxidovanadium(V) and dioxidovanadium(V) compounds, [VO(OEt)L] (1) and [Et3NH][VO2L] (2), were synthesized using an aroylhydrazone Schiff base (5-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H2L). They were characterized by elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), (1H and 51V) nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS) and single crystal X-ray diffraction analyses. Both complexes were immobilized on functionalized carbon nanotubes and activated carbon. The catalytic performances of 1 and 2, homogenous and anchored on the supports, were evaluated for the first time towards the MW-assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of cyclohexane under heterogeneous conditions. The immobilization of 1 and 2 on functionalized carbon materials improved the efficiency of catalytic oxidation and allowed the catalyst recyclability with a well-preserved catalytic activity.

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Section: Catalytic Tests For the Heterogenized Catalystssupporting

confidence: 81%

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

et al. 2021

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“…In addition to the high energy costs associated with the use of elevated temperatures the difficulties associated with separation of the catalyst from product streams has driven significant research into the replacement of cobalt salts with heterogeneous catalysts, with immobilised precious metal catalysts of particular interest [4][5][6]. While further studies have reported that significantly lower reaction temperatures can be utilised by replacing molecular O 2 with tert-butylhydroperoxide [7][8][9] or pre-formed H 2 O 2 , although it should be noted that H 2 O 2 efficiency is typically limited [10,11], often due to catalysed H 2 O 2 decomposition [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Reaction Conditions on the Oxidation of Cyclohexane via the In-Situ Production of H2O2

et al. 2020

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The oxidation of cyclohexane via the in-situ production of H 2 O 2 from molecular H 2 and O 2 offers an attractive route to the current industrial means of producing cyclohexanone and cyclohexanol (KA oil), both key materials in the production of Nylon. Herein we demonstrate that through the in-situ production of H 2 O 2 supported AuPd nanoparticles catalyse the formation of KA oil under conditions where activity is limited when using molecular O 2 , with no loss in catalytic activity observed upon re-use. The effect of key reaction parameters, including reaction temperature, catalyst mass and H 2 :O 2 ratio are evaluated.

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“…Figure shows the XRD patterns of the fresh V‐P‐O/SiO 2 catalysts with different P/V ratios and V‐P‐O loadings. The diffraction peak at 2θ = 28.8° was the characteristic peak of the (VO) 2 P 2 O 7 phase (JCPDS 50‐0380), and the peak at 2θ = 12.3° was attributed to the characteristic peak of the VOPO 4 phase (JCPDS 27‐0947) . The results revealed that these V‐P‐O/SiO 2 catalysts were composed of both VOPO 4 and (VO) 2 P 2 O 7 phases.…”

Section: Resultsmentioning

confidence: 99%

Reaction between methanol and acetic acid catalyzed by SiO₂‐supported V‐P‐O catalyst in oxygen atmosphere

Shen

Wang

et al. 2019

Can J Chem Eng

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SiO 2 -supported V-P-O catalysts prepared by the incipient-wetness impregnation method beginning with ammonium metavanadate and phosphoric acid were used in the catalytic reaction between methanol and acetic acid in an oxygen atmosphere. The SiO 2 -supported V-P-O catalysts were composed of VOPO 4 and (VO) 2 P 2 O 7 phases. Both the acidic and alkaline sites were co-present in the catalysts. The vanadium species catalyzed the oxidation of methanol to formaldehyde. The V-P-O(20-30 wt%)/SiO 2 catalysts with a P/V mole ratio of 2:1 exhibited higher catalytic activity for the formation of acrylic acid and methyl acrylate with a total selectivity of ∼28 % at 380°C. The acid sites of the catalysts also catalyzed the formation of methyl acetate with a selectivity of ∼65 %. Methanol can be an alternative to formaldehyde for the synthesis of both acrylic acid and methyl acrylate through the aldol condensation reaction.

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Synthesis, characterization of VPO catalyst dispersed on mesoporous silica surface and catalytic activity for cyclohexane oxidation reaction

Cited by 35 publications

References 40 publications

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

The Influence of Reaction Conditions on the Oxidation of Cyclohexane via the In-Situ Production of H2O2

Reaction between methanol and acetic acid catalyzed by SiO₂‐supported V‐P‐O catalyst in oxygen atmosphere

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Synthesis, characterization of VPO catalyst dispersed on mesoporous silica surface and catalytic activity for cyclohexane oxidation reaction

Cited by 35 publications

References 40 publications

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

The Influence of Reaction Conditions on the Oxidation of Cyclohexane via the In-Situ Production of H2O2

Reaction between methanol and acetic acid catalyzed by SiO2‐supported V‐P‐O catalyst in oxygen atmosphere

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Reaction between methanol and acetic acid catalyzed by SiO₂‐supported V‐P‐O catalyst in oxygen atmosphere