Institut Francais Du Pe'trole

Centre National De La Recherche Scientifique

Institute Francais Du Petrole

Albert Theolier

Agnes Choplin

Christine Travers

Jean-Marie Basset

Francis Raatz

Jean M Basset

Eric Benazzi

Gerard Paul Hotier

Christophe Nedez

Jean Thivolle-Cazat

V&eacute;ronique Vidal

A process for the metathesis of linear or branched starting alkanes involves, first, grafting metal atoms in the form of hydrides to a solid oxide, such that the grafted metal atoms are dispersed over the solid oxide, which effects a solid catalyst, and second, reacting the starting alkanes over the solid catalyst.

Method of metathesis of alkanes and catalyst

For the at least partial separation of aliphatic paraffins into at least one effluent comprising the least branched paraffins and at least one effluent comprising the most branched paraffins, use is made of at least one adsorbent bed comprising at least one grafted microporous solid. A preferred use of the invention relates to the treatment of a charge obtained from an isomerization zone, whereby at least one adsorbent bed makes it possible to separate the charge into a first effluent comprising the normal paraffins and a second effluent, and at least one adsorbent bed on which passes the second effluent, comprising at least one grafted microporous solid, making it possible to obtain a third effluent comprising the monomethyl branched paraffins and a fourth effluent comprising the polymethyl branched paraffins.

Separation of aliphatic paraffins by adsorption

The invention relates to a catalyst for isomerization of a C8 aromatic cut containing a mordenite characterized in that said mordenite contains at least one metal of groups IIa, IVb, IIb or IVa and is such that:

Catalyst with a mordenite base containing at least one metal of groups

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Decines, France

Albert Theolier