Abstract
Vanadium-magnesium oxides were found to be selective oxidative dehydrogenation catalysts for butane. The selectivity for dehydrogenation increased with increasing vanadium content until an optimum was reached for samples containing 24 to 54 wt% V2O5. Infrared spectroscopy, X-ray diffraction, Auger electron spectroscopy, and scanning electron microscopy studies of the catalysts suggested that the active component was the compound magnesium orthovanadate. For a given catalyst at about 540 °C, the selectivity for oxidative dehydrogenation increased with decreasing oxygen-to-butane ratio, decreasing conversion, and decreasing temperature. A selectivity of up to 60% was obtained. The high selectivity for oxidative dehydrogenation instead of oxygenate production is attributed to two factors: the basic surface facilitates desorption of basic butenes and butadiene, and the absence of VO lowers the oxidation activity of the surface.
| Original language | English |
|---|---|
| Pages (from-to) | 483-498 |
| Number of pages | 16 |
| Journal | Journal of Catalysis |
| Volume | 105 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1987 |
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ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology
Cite this
Selective oxidative dehydrogenation of butane over VMgO catalysts. / Chaar, M. A.; Patel, D.; Kung, M. C.; Kung, H. H.
In: Journal of Catalysis, Vol. 105, No. 2, 1987, p. 483-498.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selective oxidative dehydrogenation of butane over VMgO catalysts
AU - Chaar, M. A.
AU - Patel, D.
AU - Kung, M. C.
AU - Kung, H. H.
PY - 1987
Y1 - 1987
N2 - Vanadium-magnesium oxides were found to be selective oxidative dehydrogenation catalysts for butane. The selectivity for dehydrogenation increased with increasing vanadium content until an optimum was reached for samples containing 24 to 54 wt% V2O5. Infrared spectroscopy, X-ray diffraction, Auger electron spectroscopy, and scanning electron microscopy studies of the catalysts suggested that the active component was the compound magnesium orthovanadate. For a given catalyst at about 540 °C, the selectivity for oxidative dehydrogenation increased with decreasing oxygen-to-butane ratio, decreasing conversion, and decreasing temperature. A selectivity of up to 60% was obtained. The high selectivity for oxidative dehydrogenation instead of oxygenate production is attributed to two factors: the basic surface facilitates desorption of basic butenes and butadiene, and the absence of VO lowers the oxidation activity of the surface.
AB - Vanadium-magnesium oxides were found to be selective oxidative dehydrogenation catalysts for butane. The selectivity for dehydrogenation increased with increasing vanadium content until an optimum was reached for samples containing 24 to 54 wt% V2O5. Infrared spectroscopy, X-ray diffraction, Auger electron spectroscopy, and scanning electron microscopy studies of the catalysts suggested that the active component was the compound magnesium orthovanadate. For a given catalyst at about 540 °C, the selectivity for oxidative dehydrogenation increased with decreasing oxygen-to-butane ratio, decreasing conversion, and decreasing temperature. A selectivity of up to 60% was obtained. The high selectivity for oxidative dehydrogenation instead of oxygenate production is attributed to two factors: the basic surface facilitates desorption of basic butenes and butadiene, and the absence of VO lowers the oxidation activity of the surface.
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UR - http://www.scopus.com/inward/citedby.url?scp=34250189676&partnerID=8YFLogxK
U2 - 10.1016/0021-9517(87)90076-5
DO - 10.1016/0021-9517(87)90076-5
M3 - Article
AN - SCOPUS:34250189676
VL - 105
SP - 483
EP - 498
JO - Journal of Catalysis
JF - Journal of Catalysis
SN - 0021-9517
IS - 2
ER -