Investigations on the oxidative dehydrogenation of n-butane over VMgO-type catalysts

Lemonidou, Angeliki A.; Tjatjopoulos, G.J.; Vasalos, I.A.

doi:10.1016/s0920-5861(98)00250-8

Cited by 46 publications

(17 citation statements)

References 17 publications

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“…1 and 2 below, more oxygen will favour the formation of carbon oxides, and little oxygen is likely to enhance the formation of octenes and ODH products in general. A similar observation was reported for the ODH of butane [41], where the selectivity to butenes and butadienes increased parallel to the increase in the hydrocarbon/O 2 ratio.…”

Section: Selectivity Pattern and The N-octane To Oxygen Ratiosupporting

confidence: 84%

On the Effect of Hydrocarbon/Oxygen Ratios During the Dehydrogenation of n-Octane Over a VMgO Catalyst

Elkhalifa

Friedrich

2010

Catal Lett

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A vanadium-magnesium oxide catalyst (VMgO) with a V 2 O 5 concentration of 15% by weight was employed for the oxidative dehydrogenation of n-octane to produce the corresponding linear octenes and C8 aromatics. The catalyst was synthesized by the wet impregnation method, and was characterized by in situ XRD, TGA-DSC, and 51 V MAS NMR. The used catalysts were characterized by powder XRD, BET, pore volume analysis, SEM, EDX, ICP-OES, and 15 V MAS NMR. The catalytic testing was carried out at different n-octane/O 2 molar ratios (viz. 0.1, 0.4, 0.8, 1.2, and 1.6) at a GHSV of 8,000 h -1 in a continuous flow fixed bed reactor. The results showed that the catalytic performance with regard to both activity and selectivity was very sensitive to the strength of the oxidative environment (n-octane to oxygen ratio). No phasic changes were observed in the used catalysts. However, some textural changes were induced by the catalytic testing.

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Section: Selectivity Pattern and The N-octane To Oxygen Ratiosupporting

confidence: 84%

On the Effect of Hydrocarbon/Oxygen Ratios During the Dehydrogenation of n-Octane Over a VMgO Catalyst

Elkhalifa

Friedrich

2010

Catal Lett

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“…At very low oxidation degrees the butane conversion and the selectivity remain almost constant, which may be due to a small contribution from the thermal dehydrogenation. This contribution is small for temperatures below 600 • C (Lemonidou, Tjatjopoulos, & Vasalos, 1998) and will not be taken into account in the modelling.…”

Section: Resultsmentioning

confidence: 99%

Oxidative dehydrogenation of n-butane on V/MgO catalysts—kinetic study in anaerobic conditions

Cuesta‐Rubio

Herguido

Menéndez

2003

Chemical Engineering Science

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“…It has been reported that V 2 O 5 supported on SiO 2 [6][7][8][9], Al 2 O 3 [10,11], and MgO [12][13][14] are catalytically active for the ODH of light alkanes for alkene generation. It is generally accepted that the dispersion of V 2 O 5 and the nature of support have great influence on both alkane conversion and alkene selectivity.…”

Section: Introductionmentioning

confidence: 99%

Oxidative dehydrogenation of n-butane over mesoporous VO x /SBA-15 catalysts

et al. 2007

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Mesoporous VO x /SBA-15 catalysts with different V contents were evaluated for the oxidative dehydrogenation of n-butane and characterized by N 2 adsorption, XRD, HRTEM, H 2 -TPR, NH 3 -TPD, XPS, and EPR techniques. Compared to conventional V 2 O 5 /SiO 2 catalysts, the VO x /SBA-15 catalysts showed better performance. The good performance can be attributed to the good dispersion of V species, presence of V 4+ species and the pore structure.

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Investigations on the oxidative dehydrogenation of n-butane over VMgO-type catalysts

Cited by 46 publications

References 17 publications

On the Effect of Hydrocarbon/Oxygen Ratios During the Dehydrogenation of n-Octane Over a VMgO Catalyst

On the Effect of Hydrocarbon/Oxygen Ratios During the Dehydrogenation of n-Octane Over a VMgO Catalyst

Oxidative dehydrogenation of n-butane on V/MgO catalysts—kinetic study in anaerobic conditions

Oxidative dehydrogenation of n-butane over mesoporous VO x /SBA-15 catalysts

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