90675 ⎘
Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation; Rearrangement of carbon atoms in the hydrocarbon skeleton; Changing the branching point of an open chain or the point of substitution on a ring; Catalytic processes with inorganic acids; with salts or anhydrides of acids Acids of sulfur; Salts thereof; Sulfur oxides