Institut Francais Du Pe'trole

Isabelle Guibard

Daniel Durand

Gil Mabilon

Slavik Kasztelan

Virginie France Harle

Dominique Commereuc

Yves Chauvin

Lucien Saussine

Helene Olivier

Fr&eacute;d&eacute;ric Morel

St&eacute;phane Kressmann

Andre Hirschauer

Stéphane Kressmann

Frédéric Morel

Nicolas Des Courtils

The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ratio of toluene hydrogenation activity to the cyclohexane isomerization activity is greater than 10.

Process for conversion of hydrocarbons on a catalyst with controlled acidity

The invention involves the production of a catalyst that contains (1) at least one refractory inorganic oxide support, (2) at least one iron oxide, and (3) at least one cerium oxide, (4) at least one metal A, for example, from Groups VIB, VIIB, VIII, and IB of the Periodic System and, optionally (5) at least one compound of metal B, for example, from Groups IA, IIA, the rare-earths group, and Group IVB of the Periodic System, deposited in the form of a porous layer ('washcoat') on a ceramic or metal substrate:

Process for preparing a catalyst suitable for the treatment of exhaust

A production process for supported catalysts is described comprising:

Production process for catalysts on supports including a centrifuging

A catalyst for the treatment of exhaust gases from an internal combustion engine comprises a support including a porous layer which latter includes at least one inorganic refractory oxide and an active phase containing at least cerium, iron and platinum, characterized in that said porous layer comprises at least the following percentages by weight

Catalyst for treatment of exhaust gases from an internal combustion

A non-aqueous liquid composition with an ionic character resulting from the contacting of at least one alkylaluminum dihalide with at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, said composition being liquid below 80.degree. C., for example, between -70.degree. and +40.degree. C., is useful as a solvent of catalysts for the dimerization, codimerization and oligomerization of olefins.

Non-aqueous liquid composition with an ionic character and its use as a

Growing community of inventors

Rueil Malmaison, France

Isabelle Guibard