Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen

Chen, Xing; Zhao, Wenguang; Wang, Feng; Xu, Jie

doi:10.1016/s1003-9953(11)60394-0

Cited by 22 publications

(12 citation statements)

References 44 publications

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“…Indeed, the origin of this change of spectral band position was suggested to be the contribution of a quantum size effect in the VO-NPs [37] [38]. Finally, the band at 690 nm is attributed to d-d transition of V 4+ [39].…”

Section: Raman Spectroscopymentioning

confidence: 95%

Experimental Investigation of the Effect of Graphene Nanosheets on the Optical-Electrical Properties of Vanadium Oxide Nanocomposites

Derkaoui¹,

Khenfouch²,

Elmokri³

et al. 2016

Graphene

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We report the structural, optical and electrical properties of Graphene-Vanadium oxide nanoparticles (rGO/VO-NPs) nanocomposites prepared via a hydrothermal method on glass substrates. The samples have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (ATR-FTIR), Raman spectroscopy, ultraviolet-visible spectra (Uv-Vis) (absorbance/reflectance) and electrical conductivity. Our results are revealing a remarkable effect on the morphology and structure of vanadium oxide nanoparticles. Hence, the graphene layers improved their electrical conductivity and highly influenced their optical properties. Therefore, the obtained results may lead to better performance for a large field of applications.

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Section: Raman Spectroscopymentioning

confidence: 95%

Experimental Investigation of the Effect of Graphene Nanosheets on the Optical-Electrical Properties of Vanadium Oxide Nanocomposites

Derkaoui¹,

Khenfouch²,

Elmokri³

et al. 2016

Graphene

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“…S3) [33]. Due to the capillary condensation of nitrogen, all samples show a sudden step increase in the characteristic relative pressure (P/P 0 ) range of 0.6-0.8, suggesting typical mesoporous structure with uniform pore diameters [13]. Compared to Fig.…”

Section: Resultsmentioning

confidence: 83%

“…Various supported vanadium catalysts, such as V/SiO 2 [10], VxOy@C [11], V-AlPO 5 [12] VOx/SBA-15 [13], VOx/TiO 2 [14], V-SBA-16 [15] and VO 2 -defects/ MWCNT [16] have been developed. The dispersed vanadium species would be easily released from the supports in acetic acid aqueous solution that is the most commonly used solvent for this reaction [17], and as a result, the catalysts exhibited poor catalytic stability [18].…”

Section: Introductionmentioning

confidence: 99%

Liquid phase hydroxylation of benzene to phenol over vanadyl acetylacetonate supported on amine functionalized SBA-15

Bao

Jiang

Xing

et al. 2015

Reac Kinet Mech Cat

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An efficient catalyst for the direct hydroxylation of benzene to phenol with oxygen as the oxidant was developed by immobilizing the homogeneous vanadyl(IV) acetylacetonate (VO(acac) 2 ) on SBA-15 in which the support surface was functionalized by (3-aminopropyl)triethoxysilane. The as-prepared catalyst was characterized by various techniques including field-emission scanning electron microscopy, X-ray diffraction, nitrogen adsorption and desorption, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The results show that the homogeneous vanadium species can be successfully immobilized on the amine functionalized SBA-15 and exhibits better catalytic performance in the hydroxylation of benzene with oxygen compared to other catalysts reported in the literature. The phenol yield significantly depends on the reaction conditions. Under the optimized reaction conditions, the phenol yield can reach 13.3 %, and the asfabricated V/NH 2 -SBA-15 shows better stability against leaching owning to strong interaction between vanadium atoms and amine group as compared to the V/SBA-15 sample.

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“…2). The maximum reduction of Co 3 O 4 and V 2 O 5 in the 30Co/70SBA-15 and 30V/70SBA-15 samples was considered to be each metallic Co [31] and V 6 O 13 [32] around 410 and 420 C, respectively. The intensity for Co-reduction was greater than that for V-reduction, which means that the reduction of the vanadium oxides is difficult.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen generation over 30CoxVy/70SBA-15 mesoporous materials well-balanced by Co and V co-doping

Lee

Kwak

Park

et al. 2015

International Journal of Hydrogen Energy

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Preparation and characterization of vanadium(IV) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen

Cited by 22 publications

References 44 publications

Experimental Investigation of the Effect of Graphene Nanosheets on the Optical-Electrical Properties of Vanadium Oxide Nanocomposites

Experimental Investigation of the Effect of Graphene Nanosheets on the Optical-Electrical Properties of Vanadium Oxide Nanocomposites

Liquid phase hydroxylation of benzene to phenol over vanadyl acetylacetonate supported on amine functionalized SBA-15

Hydrogen generation over 30CoxVy/70SBA-15 mesoporous materials well-balanced by Co and V co-doping

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