Katalysator basert pÕ en molekylsikt og fremgangsmÕte for selektiv hydroisomerisering av langkjedede linµre og/eller lett forgrenede paraffiner under anvendelse av katalysatoren

摘要

The invention relates to a process for hydroisomerisation of compounds having at least one chain n - alkane having more than 10 carbon atoms, in which said compound to be treated is placed in contact with a catalyst comprising at least one element and - dehydrogenating and at least a molecular sieve having a porous network one-dimensional or two-dimensional, the accessible pore openings 10 are delimited by oxygen atoms, and the distance called the width of a bridge between the said pores being less than 0, 70 nm, and the zeolite is such that a catalyst subjected to the standard isomerisation test of the n - -heptadecane has, for a conversion of 95%, a selectivity with isomerized of at least 70%, and the catalyst contains at least 5% by weight of at least one water-soluble - dehydrogenating element selected from the group formed by the non-noble metals of gviii, the metals of gvib, and niobium, and the catalyst preferably contains the phosphore.de preferably, the screen is a zeolite bare - 10, nu - 23, nu - 87, eu - 13, or theta - 1.