Direct catalytic oxidation of benzene to phenol over metal-free graphene-based catalyst

Yang, Jinghe; Sun, Geng; Gao, Yongjun; Zhao, Hongquan; Tang, Pei; Tan, Juan; Lu, An‐Hui; Ma, Ding

doi:10.1039/c3ee23623d

Cited by 230 publications

(181 citation statements)

References 33 publications

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“…The catalytic activities of various VO x /RGO composites, V 2 O 5 , and RGO reference samples are summarized in Table 1. The RGO sample exhibits a benzene conversion of 0.5% and phenol yield of 0.4% with a selectivity of 75.8%, attributing to the intrinsic activity of π-system of graphene in activation of H 2 O 2 and the π-π interaction between graphene and benzene ring [27]. The V 2 O 5 catalyst gives a benzene conversion of 12.9% and phenol yield of 9.2% with a phenol selectivity of 71.5%.…”

Section: Hydroxylation Of Benzenementioning

confidence: 84%

“…The hydroquinone (HQ) and benzoquinone (BQ) are main byproducts for the present research. The enhanced catalytic performance of VG-N-A300 may be attributed to the uniformly dispersed VO x active species, the hydrophobic RGO surface for good benzene adsorption ability, as well as the huge π-electron system of RGO for the activation of benzene [27,31,35]. On the other hand, the lower catalytic activity of VG-A300 than that of VG-N-A300 can be assigned to the aggregation of V species on the RGO support arising from the lack of initial calcination in N 2 .…”

Section: Hydroxylation Of Benzenementioning

confidence: 99%

“…The V x O y @C [33], VO 2 -defacts/MWCNTs [34], and V/GO materials [35] have shown good performance in the hydroxylation of benzene to phenol. The high specific surface areas, hydrophobic surface, and carbon defect active sites were found to be facilitative for the adsorption and activation of benzene, as well as the enhancement of catalytic activity of catalysts [27,31,35]. However, in spite of the fascinating two-dimensional structure of graphene with huge open π-electron systems, highly specific surface areas, and hydrophobic surface [27,36,37], to the best of our knowledge, few studies on the fabrication of uniform VO x nanoparticles (NPs) on graphene for the hydroxylation of benzene to phenol have been reported so far.…”

Section: Introductionmentioning

confidence: 99%

“…The highly dispersed VO x nanoparticles (NPs) were found to be highly efficient for the hydroxylation of benzene. As one of the most interesting solid materials, carbon materials (such as activated carbon, MWCNTs, and graphene) can act as catalysts by themselves [25][26][27] or serve as supports for other active phase [28][29][30][31][32]. Nowadays, the vanadium oxide/carbon composites have attracted increasing attentions.…”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Vanadium Oxide/Reduced Graphene Oxide Composite Catalysts for Enhanced Hydroxylation of Benzene to Phenol

et al. 2016

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Abstract:The vanadium oxide/reduced graphene oxide (VO x /RGO) composites have been prepared by a simple solvothermal method with the assistance of cationic surfactant cetyltrimethylammonium bromide (CTAB). The microstructure and morphology of the resultant VO x /RGO composites have been well characterized. The VO x nanoparticles are highly dispersed on the RGO sheets with a particle size of about 25 nm. When used as hydroxylation catalysts, the VO x /RGO composites are more efficient than individual RGO and vanadium oxide catalysts. The enhanced catalytic performance may be related to not only the well dispersed VO x active species, but also the hydrophobic surface and huge π-electron system of RGO for the adsorption and activation of benzene. In addition, the effects of calcination conditions on the microstructure and catalytic properties of VO x /RGO composites have also been investigated. The uniform VO x nanoparticles on the separated RGO sheets show highly efficient catalytic performance, while the formation of aggregated H x V 2 O 5 and bulk V 2 O 5 species along with the destruction of RGO sheets are poor for the hydroxylation of benzene. Up to 17.4% yield of phenol is achieved under the optimized catalytic reaction conditions.

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Section: Hydroxylation Of Benzenementioning

confidence: 84%

Section: Hydroxylation Of Benzenementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile Synthesis of Vanadium Oxide/Reduced Graphene Oxide Composite Catalysts for Enhanced Hydroxylation of Benzene to Phenol

et al. 2016

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“…近年来, 金属磷化物被报道在加氢反应中具有非常好的活性, 如用磷化铁 (FeP)催化 CO 加氢合成醇, FeP 不但结构稳定, 而且能抗硫的毒化 [8～10] . 石墨烯(G)和氧化石墨烯(GO), 由于其独特的物理化学性质 [11,12] , 不仅本身可以作为催化剂用于氧化还原反应 [13,14] , 而且与碳纳米管一样, 它们还可以作为载体, 如图 5A 所示, 在同样的合成条件和反应条件下, Figure 5 Activities of CO conversion and hydrocarbon production on the studied catalysts (A …”

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