SELECTIVE HYDROISOMERISATION METHOD FOR STRAIGHT AND/OR SLIGHTLY BRANCHED LONG PARAFFINS, USING A MOLECULAR SIEVE CATALYST

摘要

The invention pertains to a selective hydroisomerisation method for compounds with one or more n-alkane chains containing 10 carbon atoms or less, wherein said compound to be treated is contacted with a catalyst including at least one hydro-dehydrogenating component and at least one molecular sieve with a one- or two-dimensional porous matrix, the accessible pore openings being defined by 10 hydrogen atoms, and the so-called bridge width between the pores being less that 0.70 nm. The catalyst, under a standard n-heptadecane isomerisation test and for a conversion rate of 95 %, has an isomerised product selectivity of at least 70 %. The sieve is preferably a NU-10, NU-23, NU-87, EU-13 or Theta-1 zeolite.