| abstract |
A process for purifying the linear olefins containing as isomers isomers substituted on the carbon at position 2 by alkyl chain involves the transformation of the impurities by isomerization of the double bond and / or by dimerization and / or by oligomerization using as a catalyst and as a solvent of a composition comprising at least one Bronsted acid, designated HB, dissolved in an ionic liquid medium comprising at least one organic cation Q + and an anion A - , said composition being such that, when A and B are identical, the molar ratio of the Bronsted acid to the ionic liquid is less than 1/1. |