Superacidic FSO3H/HF catalyzed butane isomerization [1]

@article{Olah1991SuperacidicFC,
  title={Superacidic FSO3H/HF catalyzed butane isomerization [1]},
  author={George A. Olah and Omar Farooq and Altaf Husain and Ning Ding and Nirupam J. Trivedi and Judith A. Olah},
  journal={Catalysis Letters},
  year={1991},
  volume={10},
  pages={239-247}
}
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… 
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