The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates

George W. Coulston, Simon R. Bare, Harold H Kung, Kari Birkeland, Gregory K. Bethke, Richard Harlow, Norman Herron, Peter L. Lee

Research output: Contribution to journalArticle

181 Citations (Scopus)

Abstract

Maleic anhydride, a precursor to polyester resins, is made by oxidation of n-butane over vanadium phosphate catalysts. This system is of general interest because it is the only heterogeneously catalyzed, alkane-selective oxidation reaction in commercial use. Time-resolved in situ x-ray absorption spectroscopy shows that when either α1-VOPO4/SiO2 or (VO)2P2O7/SiO2 catalysts are exposed to n-butane, the rate of maleic anhydride formation is proportional to the rate of decay of V5+ species in the catalyst. Thus V5+ species are kinetically significant for the production of maleic anhydride and not just for the production of by-products. The results also suggest that V5+ species may play a role in the initial hydrogen abstraction from n-butane, the rate-determining step in the reaction sequence. V4+ sites appear to be responsible for by-product formation.

Original languageEnglish
Pages (from-to)191-193
Number of pages3
JournalScience
Volume275
Issue number5297
DOIs
Publication statusPublished - Jan 10 1997

Fingerprint

Maleic Anhydrides
Vanadium
Phosphates
Oxidation
Catalysts
Kinetics
Byproducts
Alkanes
Polyester resins
Absorption spectroscopy
Hydrogen
X rays
butane

ASJC Scopus subject areas

  • General

Cite this

Coulston, G. W., Bare, S. R., Kung, H. H., Birkeland, K., Bethke, G. K., Harlow, R., ... Lee, P. L. (1997). The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates. Science, 275(5297), 191-193. https://doi.org/10.1126/science.275.5297.191

The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates. / Coulston, George W.; Bare, Simon R.; Kung, Harold H; Birkeland, Kari; Bethke, Gregory K.; Harlow, Richard; Herron, Norman; Lee, Peter L.

In: Science, Vol. 275, No. 5297, 10.01.1997, p. 191-193.

Research output: Contribution to journalArticle

Coulston, GW, Bare, SR, Kung, HH, Birkeland, K, Bethke, GK, Harlow, R, Herron, N & Lee, PL 1997, 'The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates', Science, vol. 275, no. 5297, pp. 191-193. https://doi.org/10.1126/science.275.5297.191
Coulston, George W. ; Bare, Simon R. ; Kung, Harold H ; Birkeland, Kari ; Bethke, Gregory K. ; Harlow, Richard ; Herron, Norman ; Lee, Peter L. / The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates. In: Science. 1997 ; Vol. 275, No. 5297. pp. 191-193.
@article{19bd4b96665c4ad4a1f9d78a08165cf2,
title = "The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates",
abstract = "Maleic anhydride, a precursor to polyester resins, is made by oxidation of n-butane over vanadium phosphate catalysts. This system is of general interest because it is the only heterogeneously catalyzed, alkane-selective oxidation reaction in commercial use. Time-resolved in situ x-ray absorption spectroscopy shows that when either α1-VOPO4/SiO2 or (VO)2P2O7/SiO2 catalysts are exposed to n-butane, the rate of maleic anhydride formation is proportional to the rate of decay of V5+ species in the catalyst. Thus V5+ species are kinetically significant for the production of maleic anhydride and not just for the production of by-products. The results also suggest that V5+ species may play a role in the initial hydrogen abstraction from n-butane, the rate-determining step in the reaction sequence. V4+ sites appear to be responsible for by-product formation.",
author = "Coulston, {George W.} and Bare, {Simon R.} and Kung, {Harold H} and Kari Birkeland and Bethke, {Gregory K.} and Richard Harlow and Norman Herron and Lee, {Peter L.}",
year = "1997",
month = "1",
day = "10",
doi = "10.1126/science.275.5297.191",
language = "English",
volume = "275",
pages = "191--193",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "5297",

}

TY - JOUR

T1 - The kinetic significance of V5+ in n-butane oxidation catalyzed by vanadium phosphates

AU - Coulston, George W.

AU - Bare, Simon R.

AU - Kung, Harold H

AU - Birkeland, Kari

AU - Bethke, Gregory K.

AU - Harlow, Richard

AU - Herron, Norman

AU - Lee, Peter L.

PY - 1997/1/10

Y1 - 1997/1/10

N2 - Maleic anhydride, a precursor to polyester resins, is made by oxidation of n-butane over vanadium phosphate catalysts. This system is of general interest because it is the only heterogeneously catalyzed, alkane-selective oxidation reaction in commercial use. Time-resolved in situ x-ray absorption spectroscopy shows that when either α1-VOPO4/SiO2 or (VO)2P2O7/SiO2 catalysts are exposed to n-butane, the rate of maleic anhydride formation is proportional to the rate of decay of V5+ species in the catalyst. Thus V5+ species are kinetically significant for the production of maleic anhydride and not just for the production of by-products. The results also suggest that V5+ species may play a role in the initial hydrogen abstraction from n-butane, the rate-determining step in the reaction sequence. V4+ sites appear to be responsible for by-product formation.

AB - Maleic anhydride, a precursor to polyester resins, is made by oxidation of n-butane over vanadium phosphate catalysts. This system is of general interest because it is the only heterogeneously catalyzed, alkane-selective oxidation reaction in commercial use. Time-resolved in situ x-ray absorption spectroscopy shows that when either α1-VOPO4/SiO2 or (VO)2P2O7/SiO2 catalysts are exposed to n-butane, the rate of maleic anhydride formation is proportional to the rate of decay of V5+ species in the catalyst. Thus V5+ species are kinetically significant for the production of maleic anhydride and not just for the production of by-products. The results also suggest that V5+ species may play a role in the initial hydrogen abstraction from n-butane, the rate-determining step in the reaction sequence. V4+ sites appear to be responsible for by-product formation.

UR - http://www.scopus.com/inward/record.url?scp=0031012656&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031012656&partnerID=8YFLogxK

U2 - 10.1126/science.275.5297.191

DO - 10.1126/science.275.5297.191

M3 - Article

AN - SCOPUS:0031012656

VL - 275

SP - 191

EP - 193

JO - Science

JF - Science

SN - 0036-8075

IS - 5297

ER -