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Silica supported perfluoroalkanedisulphonic acids (PFAS-SiO2) catalyze the alkylation of isobutane with n-butene to yield mainly high-octane trimethylpentanes. PFAS-SiO2 activity is highly dependent on the PFAS employed, on the preparation method and on the reaction conditions adopted. 1H and 29Si MAS NMR spectroscopy were used to evidence the changes in surface silanols caused by impregnating silica...
Solid acid catalysts based on heteropoly acids supported on different oxides catalyse the alkylation of isobutane with n-butenes to yield high‐octane gasoline components. They are active for a short period of time on stream. Regeneration is easily made by thermal treatment under air. The catalysts have been characterised by NMR, EPR, XRD and TEM‐EDS techniques.
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