Highly Selective Oxidative Dehydrogenation of Propane to Propylene over VOx–SiO2 Catalysts

Fukudome, Kenta; Suzuki, Toshimitsu

doi:10.1007/s10563-015-9192-4

Cited by 23 publications

(11 citation statements)

References 55 publications

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“…The XPS spectra for V2p 3/2 of n V-MSNS catalysts are shown in Figure , which can be deconvoluted into three peaks with BE at 515.9, 517.4, and 518.8 eV, respectively. The peaks at 515.9 and 517.4 eV are assigned to V III and V V , respectively, whereas the peak at 518.8 eV is attributed to the highly dispersed vanadium (V V ) oxide. , …”

Section: Resultsmentioning

confidence: 99%

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂

Xue

Lang

Yan

et al. 2017

ACS Appl. Mater. Interfaces

104

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The uniform monodispersed vanadium-doped three-dimensional dendritic mesoporous silica nanospheres (nV-MSNSs) were successfully synthesized in a heterogeneous oil-water biphase stratification reaction system and characterized by several state-of-the-art methods. The synthesized nV-MSNSs were applied to the oxidative dehydrogenation of the propane (ODHP) reaction with the presence of CO and exhibited excellent catalytic performances. The results show that the vanadium loading (1.3-8.0 wt %) evidently influences the textural properties, oxidation state, and polymerization degree of vanadium species of nV-MSNSs. The specific surface area (S), pore diameter (D), and pore volume (V) of nV-MSNSs decrease with the loading of vanadium species. The excessively high vanadium loading leads to the slight connection of nanospheres, but does not affect the assembly and growth of the three-dimensional (3D) dendritic channels. The percentage of highly dispersed vanadium V species gradually increases and attains the maximum value for 5.2V-MSNSs with the loading of vanadium and then decreases with further vanadium addition. The higher-polymerized VO species gradually generates above 5.2 wt % vanadium content for nV-MSNSs. The lower-polymerized VO species appear to be more active than the higher-polymerized VO species. Markedly, the 5.2V-MSNSs exhibit the highest catalytic activity with the initial propane conversion of 58% for the ODHP. The excellent catalytic performance can be maintained after eight reaction-regeneration cycles. The silica mesoporous frameworks can be well preserved in the reaction-regeneration cycles; meanwhile, the highly dispersed vanadium oxide also can be fully recovered after in situ regeneration. Hence, nV-MSNS catalysts exhibit outstanding activity and stability, and it would have a promising application in the DH of alkanes.

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Section: Resultsmentioning

confidence: 99%

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂

Xue

Lang

Yan

et al. 2017

ACS Appl. Mater. Interfaces

104

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“…Vanadium oxide (VO x ) nanomaterials including nanowires, nanoflakes, nanotubes, have been attracting great interest in nanozyme, high‐energy lithium batteries, environmental remediation catalysis, hydrogen storage, etc ,. due to their outstanding properties such as low toxicity, structural flexibility and distinctive redox behavior .…”

Section: Methodsmentioning

confidence: 99%

“…Vanadium oxide (VO x ) nanomaterials including nanowires, [1][2][3] nanoflakes, [4] nanotubes, [5] have been attracting great interest in nanozyme, [1][2][3][4] high-energy lithium batteries, environmental remediation catalysis, hydrogen storage, etc. [4,[6][7][8][9][10] due to their outstanding properties such as low toxicity, structural flexibility and distinctive redox behavior. [11][12][13] Thereinto, to endow it with novel properties and broaden its applications, it is still in need to engineer the new morphologies and sizes of the VO x materials.…”

mentioning

confidence: 99%

Generation of Vanadium Oxide Quantum Dots with Distinct Fluorescence and Antibacterial Activity via a Room‐Temperature Agitation Strategy

Huang

Niu

et al. 2018

ChemNanoMat

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Vanadium oxide (VOx) nanomaterials have been attracting great attention recently due to their outstanding physicochemical properties. Engineering VOx into quantum dots (QDs) should bring new properties and potential for applications, but has not been reported until now. Meanwhile, the shortcomings in QDs synthesis such as needing high temperature and expensive instruments still need to be overcome. Herein, VOxQDs were generated via a simple ultrasonic and agitation strategy at room temperature using DMSO as both solvent and exfoliation agent. The VOx QDs exhibited blue fluorescence under 365 nm ultraviolet irradiation. They were with good monodispersion, narrow size distribution and average particle size of 3.3±0.3 nm. The VOxQDs can be used as a competitive fluorescent sensing probe for label‐free specific detection of Fe3+ and PPi based on the ON‐OFF or ON‐OFF‐ON fluorescent principle, respectively. Moreover, the antibacterial activity of the as‐prepared VOxQDs was found, which could damage the cell membrane and inhibit the bacterial growth of both Gram (+) (Staphylococcus aureus) and Gram (−) (Escherichia coli) bacteria, respectively.

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“…Broad Raman band in the range 500-950 cm -1 can be attributed to V-O-V stretching and V-O-Al antisymmetric/symmetric stretching vibrations in polymerized VOx [22,35]. The sharp but low intensity peak at 145 cm -1 represents crystalline vanadia [37]. Comparing with the parent sample, all modified samples contain similar but relatively weaker bands in the range of 500-950 cm -1 .…”

Section: Evolution Of Surface Vanadia Speciesmentioning

confidence: 95%

Highly stable phosphine modified VOx/Al2O3 catalyst in propane dehydrogenation

Liu

Yang

et al. 2020

Applied Catalysis B: Environmental

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The relatively low cost and mild toxicity of vanadium makes it an alternative to commercially applied Pt and Cr based catalysts in propane dehydrogenation (PDH). Conventional VOx/Al2O3 catalyst shows high initial activity, but deactivates fast due to severe coke formation, which requires frequent regeneration by coke combustion and causes massive CO2 emissions. In this context, we report on the phosphine (PH3) surface modification of VOx/Al2O3 catalyst leading to substantial improvement of its stability. The phosphorus considerably modifies the properties of the VOx/Al2O3 catalyst: (i) tunes surface acidity, (ii) separates polymerized vanadium oxide species and (iii) weakens interaction between vanadium species with alumina support. Synergy among all these factors facilitate desorption of produced propylene and inhibit the oligomerization of coke precursors, which contributed to the enhancement of the catalyst stability during propane dehydrogenation.

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Highly Selective Oxidative Dehydrogenation of Propane to Propylene over VOx–SiO2 Catalysts

Cited by 23 publications

References 55 publications

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂

Generation of Vanadium Oxide Quantum Dots with Distinct Fluorescence and Antibacterial Activity via a Room‐Temperature Agitation Strategy

Highly stable phosphine modified VOx/Al2O3 catalyst in propane dehydrogenation

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Highly Selective Oxidative Dehydrogenation of Propane to Propylene over VOx–SiO2 Catalysts

Cited by 23 publications

References 55 publications

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO2

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO2

Generation of Vanadium Oxide Quantum Dots with Distinct Fluorescence and Antibacterial Activity via a Room‐Temperature Agitation Strategy

Highly stable phosphine modified VOx/Al2O3 catalyst in propane dehydrogenation

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Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂

Dispersed Vanadium in Three-Dimensional Dendritic Mesoporous Silica Nanospheres: Active and Stable Catalysts for the Oxidative Dehydrogenation of Propane in the Presence of CO₂