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