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Shishido, Tetsuya; Inoue, Atsushi; Konishi, Tsuyoshi; Matsuura, Ikuya; Takehira, Katsuomi

doi:10.1023/a:1019056108789

Cited by 56 publications

(21 citation statements)

References 26 publications

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“…The relative intensity of these two bands decreases with increasing V 2 O 5 loading, indicating the increasing amount of Sb-V mixed oxide on catalysts surface. In other researchers' work on bulk Sb-V mixed oxide, it has also been evidenced by XRD that the amount of Sb-V mixed oxide increases with decreasing Sb/V ratio [17]. It was also found that unsupported Sb-V mixed oxide catalysts contained several phases, including Sb-V mixed oxide in rutile phase and Sb 2 O 4 [18].…”

Section: Resultsmentioning

confidence: 71%

“…In the spectra of Sb 20 V 0.56-5.6 O/SiO 2 catalysts, the bands at 835, 884, 912 and 990 cm )1 are attributed to Sb-V mixed oxide phase according to very recent reports on Sb-V mixed oxide materials [14,17,[19][20][21]. The bands at 835, 884 and 912 cm )1 , which have not been reported previously, are prominent because of resonance enhancement [20,21].…”

Section: Resultsmentioning

confidence: 77%

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Catalytic Performance of the Sb–V Mixed Oxide on Sb–V–O/SiO2 Catalysts in Methane Selective Oxidation to Formaldehyde

Zhang

Sun

et al. 2006

Catal Lett

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Sb-V-O/SiO 2 catalysts were prepared and investigated in methane selective oxidation with O 2 as oxidant. Sb-V-O/SiO 2 catalysts are active and selective in methane selective oxidation. The formaldehyde yield obtained on Sb-V-O/SiO 2 catalysts is clearly higher than that for VO X /SiO 2 and SbO X /SiO 2 catalysts. A one-pass formaldehyde yield up to 3% was obtained on Sb-V-O/SiO 2 catalysts at 650°C. XRD and UV Raman studies showed that the phase of Sb-V mixed oxide on Sb-V-O/SiO 2 catalysts transformed with decreasing Sb/V ratio from Sb 2 VO 5 to SbVO 4 /VSb 1-X O 4-1.5X phase. The Sb-V mixed oxide in Sb 2 VO 5 phase is more active and selective than that in SbVO 4 /VSb 1-X O 4-1.5X phase.

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 77%

Catalytic Performance of the Sb–V Mixed Oxide on Sb–V–O/SiO2 Catalysts in Methane Selective Oxidation to Formaldehyde

Zhang

Sun

et al. 2006

Catal Lett

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“…They are efficient for propane ammoxidation when they are involved in the SbVO 4 phase. Our results demonstrate that in the absence of excess antimony, it forms nanocrystalline V 2 O 5 phase, which is determined by Raman spectroscopy (Fig.…”

Section: Role Of V Speciesmentioning

confidence: 99%

“…Although they show good performances for some processes as the selective oxidation of H 2 S to elemental sulphur [1,2], the selective destruction of nitrogen-containing organic volatile compounds [3], or the oxidation of isobutylene into methacrolein [4]; the processes for which they have been extensively studied, since they are highly active and selective, is for the catalytic insertion of nitrogen into propane and/or glycerol molecules in order to obtain the desired acrylonitrile molecule [5][6][7][8][9][10]. The catalytic properties of these materials during these N-insertion processes are, in part, due to the ability of vanadium sites in SbVO 4 rutile structure to activate the ammonia molecule [11,12].…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Niobiosilica Materials as Attractive Supports for Sb–V–O Catalysts

et al. 2012

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Since niobium species have been described as being able to increase the catalytic properties of the Sb-V-O catalytic system, the main objective of the present paper is to design a non ordered-mesoporous Nb-containing material useful to be used as a support for this kind of catalysts. Such a material has been used as support for Sb-V-O active phases and the catalysts have been characterized and tested for the propane ammoxidation reaction. For comparative purposes, and in order to evaluate the role of niobium species, the study has been also performed with a support without niobium. The results have shown how the incorporation of niobium species into the support matrix with the procedure described here leads to the formation of a very promising catalytic support. The Nb species incorporated into the support cooperate with vanadium species of the SbVOx active phase increasing its performance for nitrile insertion into propane. Since Nb is a common additive that improves the catalytic behavior of different catalytic systems, the mesoporous Nb-containing support described in the present paper could be useful for other catalysts and/or catalytic processes.

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“…26 It was mentioned in 27 that V 1 Sb 10 O x mixed oxide is active in the ODH of isobutane to isobutene.…”

Section: 22-24mentioning

confidence: 99%

Effect of Various Supports on the Catalytic Performance of V-Sb Oxides in the Oxidative Dehydrogenation of sobutane

Shamilov¹,

Vislovskiy²

2011

Journal of the Korean Chemical Society

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ABSTRACT. V0.9Sb0.1Ox systems, bulk and deposited on different supports (five types of γ-aluminas, α-alumina, silica-alumina, silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. Catalytic performance of VSb oxides has shown to be highly dependent on the support and the nature of the support decreasing in a series: γ-Al2O3 > α-Al2O3 > Si-Al-O > SiO2 ≈ MgO >> unsupported. Variation of the V-Sb-O-loading in the studied range of coverage (0.5-2 theoretical monolayer) only slightly influences the catalysts' activity and selectivity. The best catalytic performance of γ-alumina-supported V0.9Sb0.1Ox systems can be explained by the optimal surface interaction between support and supported components resulting in the formation of well-spread amorphous active VOx-component with vanadium in a high oxidation state.

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Untitled

Cited by 56 publications

References 26 publications

Catalytic Performance of the Sb–V Mixed Oxide on Sb–V–O/SiO2 Catalysts in Methane Selective Oxidation to Formaldehyde

Catalytic Performance of the Sb–V Mixed Oxide on Sb–V–O/SiO2 Catalysts in Methane Selective Oxidation to Formaldehyde

Niobiosilica Materials as Attractive Supports for Sb–V–O Catalysts

Effect of Various Supports on the Catalytic Performance of V-Sb Oxides in the Oxidative Dehydrogenation of sobutane

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