Phase Equilibria and Butane Oxidation Studies of the MgO-V2O5-MoO3 System

W. D. Harding; H. H. Kung; V. L. Kozhevnikov; K. R. Poeppelmeier

doi:10.1006/jcat.1993.1356

Phase Equilibria and Butane Oxidation Studies of the MgO-V₂O₅-MoO₃ System

W. D. Harding^*, H. H. Kung, V. L. Kozhevnikov, K. R. Poeppelmeier

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Phase relations in the magnesium oxide-rich corner of the system MgO-V₂O₅-MoO₃ were studied. A new compound, Mg_2.5VMoO₈, was discovered. The solubility limit of molybdenum oxide in magnesium orthovanadate Mg_3-xV_2-2xMo_2xO₈ was found to be x ∼ 0.03. Butane oxidation studies of oxides with compositions along the pseudobinary line Mg₃V₂O₈-Mg_2.5VMoO₈-MgMoO₄ were investigated. All the compositions studied maintain the high catalytic dehydrogenation selectivity of the magnesium orthovanadate which is attributed to the similarities of vanadium environment in Mg_2.5VMoO₈ and Mg₃V₃O₈. Incorporation of molybdenum oxide in the orthovanadate results mainly in an increase of cracking products.

Original language	English (US)
Pages (from-to)	597-610
Number of pages	14
Journal	Journal of Catalysis
Volume	144
Issue number	2
DOIs	https://doi.org/10.1006/jcat.1993.1356
State	Published - Dec 1993

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

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10.1006/jcat.1993.1356

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title = "Phase Equilibria and Butane Oxidation Studies of the MgO-V2O5-MoO3 System",

abstract = "Phase relations in the magnesium oxide-rich corner of the system MgO-V2O5-MoO3 were studied. A new compound, Mg2.5VMoO8, was discovered. The solubility limit of molybdenum oxide in magnesium orthovanadate Mg3-xV2-2xMo2xO8 was found to be x ∼ 0.03. Butane oxidation studies of oxides with compositions along the pseudobinary line Mg3V2O8-Mg2.5VMoO8 -MgMoO4 were investigated. All the compositions studied maintain the high catalytic dehydrogenation selectivity of the magnesium orthovanadate which is attributed to the similarities of vanadium environment in Mg2.5VMoO8 and Mg3V3O8. Incorporation of molybdenum oxide in the orthovanadate results mainly in an increase of cracking products.",

author = "Harding, {W. D.} and Kung, {H. H.} and Kozhevnikov, {V. L.} and Poeppelmeier, {K. R.}",

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T1 - Phase Equilibria and Butane Oxidation Studies of the MgO-V2O5-MoO3 System

AU - Harding, W. D.

AU - Kung, H. H.

AU - Kozhevnikov, V. L.

AU - Poeppelmeier, K. R.

PY - 1993/12

Y1 - 1993/12

N2 - Phase relations in the magnesium oxide-rich corner of the system MgO-V2O5-MoO3 were studied. A new compound, Mg2.5VMoO8, was discovered. The solubility limit of molybdenum oxide in magnesium orthovanadate Mg3-xV2-2xMo2xO8 was found to be x ∼ 0.03. Butane oxidation studies of oxides with compositions along the pseudobinary line Mg3V2O8-Mg2.5VMoO8 -MgMoO4 were investigated. All the compositions studied maintain the high catalytic dehydrogenation selectivity of the magnesium orthovanadate which is attributed to the similarities of vanadium environment in Mg2.5VMoO8 and Mg3V3O8. Incorporation of molybdenum oxide in the orthovanadate results mainly in an increase of cracking products.

AB - Phase relations in the magnesium oxide-rich corner of the system MgO-V2O5-MoO3 were studied. A new compound, Mg2.5VMoO8, was discovered. The solubility limit of molybdenum oxide in magnesium orthovanadate Mg3-xV2-2xMo2xO8 was found to be x ∼ 0.03. Butane oxidation studies of oxides with compositions along the pseudobinary line Mg3V2O8-Mg2.5VMoO8 -MgMoO4 were investigated. All the compositions studied maintain the high catalytic dehydrogenation selectivity of the magnesium orthovanadate which is attributed to the similarities of vanadium environment in Mg2.5VMoO8 and Mg3V3O8. Incorporation of molybdenum oxide in the orthovanadate results mainly in an increase of cracking products.

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Phase Equilibria and Butane Oxidation Studies of the MgO-V₂O₅-MoO₃ System

Abstract

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