Catalysis Letters

, Volume 10, Issue 3–4, pp 239–247 | Cite as

Superacidic FSO3H/HF catalyzed butane isomerization [1]

  • George A. Olah
  • Omar Farooq
  • Altaf Husain
  • Ni Ding
  • Nirupam J. Trivedi
  • Judith A. Olah
Article

Abstract

Superacid catalyzed isomerization of butane was studied. Highly efficient isomerization of butane to 2-methylpropane (isobutane) was achieved using fluorosulfuric acid containing up to 5% of hydrogen fluoride acting as a protic co-acid. The isomerization when carried out in excess FSO3H at 21 ° C in a flow system gave ∼70% conversion to 2-methylpropane with generally less than 3% cracking. When 2-methylpropane was isomerized under similar conditions about 12% butane was formed. Attempted isomerization of pentane and hexane with prolonged reaction times in a static system results in predominant protolytic cleavage (cracking).

Keywords

Butane isomerization superacid catalysis 

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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1991

Authors and Affiliations

  • George A. Olah
    • 1
  • Omar Farooq
    • 1
  • Altaf Husain
    • 1
  • Ni Ding
    • 1
  • Nirupam J. Trivedi
    • 1
  • Judith A. Olah
    • 1
  1. 1.Contribution from the Loker Hydrocarbon Research Institute and Department of ChemistryUniversity of Southern CaliforniaLos AngelesUSA

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