Oxidative dehydrogenation of butane over orthovanadates

D. Patel, P. J. Andersen, Harold H Kung

Research output: Contribution to journalArticle

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Abstract

The oxidative dehydrogenation of butane was studied over NdVO4, SmVO4, EuVO4, and Ba3(VO4)2 at 500 and 540°C. It was found that NdVO4 and SMVO4 were both quite active and selective for dehydrogenation, but EUVO4 was less selective although very active. The products were butenes, butadiene, carbon oxides, and small amounts of CZ and C3 hydrocarbons. The selectivities for butenes over NdVO4, SMVO4, mixed V-Mg-oxide, and Mg3(VO4)2 were found to be the same, but V-Mg-0 was much more selective for butadiene than the other catalysts were. Ba3(VO4)2 was selective, but both its activity and selectivity declined with time on stream due to the formation of BaCO3. These oxides also showed different behaviors in temperature-programmed reduction and reoxidation. These observations can be explained by a model that relates the redox behavior of a catalyst to the availability of oxygen at the active site and thus to the catalytic behavior.

Original languageEnglish
Pages (from-to)132-142
Number of pages11
JournalJournal of Catalysis
Volume125
Issue number1
DOIs
Publication statusPublished - 1990

Fingerprint

Vanadates
Butane
Dehydrogenation
dehydrogenation
butanes
Oxides
butenes
butadiene
Butadiene
Butenes
oxides
selectivity
catalysts
Catalysts
Hydrocarbons
availability
Carbon
hydrocarbons
Availability
Oxygen

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Oxidative dehydrogenation of butane over orthovanadates. / Patel, D.; Andersen, P. J.; Kung, Harold H.

In: Journal of Catalysis, Vol. 125, No. 1, 1990, p. 132-142.

Research output: Contribution to journalArticle

Patel, D. ; Andersen, P. J. ; Kung, Harold H. / Oxidative dehydrogenation of butane over orthovanadates. In: Journal of Catalysis. 1990 ; Vol. 125, No. 1. pp. 132-142.
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