Institut Francais Du Pe'trole

Herv&eacute; Cauffriez

Eric Benazzi

Christine Travers

Fabienne Le Peltier

Elisabeth Rosenberg

Nicolas Chouteau

For transforming hydrocarbons into aromatic compounds, the reaction is conducted on a homogeneous bed of catalyst particles, said catalyst comprising at least one amorphous matrix, at least one noble metal, at least two additional metals M1 and M2 and at least one halogen, and in which, for a catalyst particle, C is the local concentration of platinum; C is the local concentration of additional metal M1; C is the local concentration of additional metal M2; in which the standard deviation of the distribution of the local ratios of the concentrations of the additional metals, C /C , measured along the particle diameter, is better than 25% relative.

Homogeneous catalyst bed and process of transforming hydrocarbons into aromatic compounds with the bed

A process for the catalytic conversion of hydrocarbons, in particular for the oligomerization of olefins wherein the catalyst comprises a zeolite which is at least partially in its acid form. The zeolite is a NU-86 zeolite comprising silicon and at least one element T selected from the group formed by aluminum, iron, gallium and boron, preferably aluminum, characterized in that element T has been extracted from the framework, and in that it has a global Si/T atomic ratio of more than about 20. Element T is extracted from the zeolitic framework (or network) by means of at least one heat treatment, optionally carried out in the presence of steam, followed by at least one acid attack using at least one solution of a mineral or organic acid, or by direct acid attack.

Conversion of hydrocarbons with a dealuminated NU-86 zeolite catalyst

The invention concerns a catalyst containing at least one halogen, at least one metal from group VIII and a formed support comprising gamma alumina and optionally eta alumina, the catalyst being characterized in that the smallest average dimension of said support is in the range 0.8 mm to 2 mm and in that the halogen content is in the range 4.5% to 15% by weight. The invention also concerns the preparation of said catalyst, preferably with chlorination (in the case where the halogen is chlorine) in the presence of CCl,or CHCl,. The invention also concerns the use of the catalyst for the isomerisation of normal C,-C,paraffins.

Growing community of inventors

Bougival, France

Hervé Cauffriez

Growing community of inventors

Bougival, France

Herv&eacute; Cauffriez

Hervé Cauffriez