Total Raffinage Distribution S.a.

Joeri Denayer

Alain Milan

Sebastien Decker

Georges Szabo

Pedro Nascimento

Pedro Da Silva

Marc Bisson

Jean-Pierre Dath

A catalytic support includes a substantial quantity of at least one SVI group Periodic Table metal oxide in which is incorporated silica. The mass ratio between the quantity of SVI group metal oxide and the quantity of silica it contains ranges between 5 and 70, the SVI group metal oxide is in crystalline form, and the specific surface of the support is greater than or equal to 160 m /g.

Catalytic support with an oxide base from a metal belonging to the SVI group of the periodic table, its preparation and its uses

The invention relates to an acid catalyst containing a substantial quantity of supported or mass sulfated zirconia and at least one hydrogenating transition metal. This catalyst is characterized by the fact that the sulfated zirconia is in crystallized form and that it shows a specific surface area greater than or equal to 135 m /g, a pore volume greater than or equal to 0.16 cm /g and an average pore diameter greater than or equal to 20 Angstroms (20&times;10 m). The invention also relates to methods of making this catalyst and to the uses of this catalyst in hydrocarbon transformation chemical reactions requiring the use of an acid type catalyst, such as for example, isomerization, alkylation, oligomerization reactions or even light hydrocarbon dehydration reactions, and also heavier hydrocarbon hydrocracking and hydroisomerization reactions. In a preferred embodiment of the method of the present invention, a hydrated zirconia gel is washed with a soluble polar organic solvent (other than water). In accordance with the method including this washing step, a solid acid catalyst containing pure mass sulfated zirconia in a crystallized form has a surface area greater than or equal to 150 m /g, a pore volume greater than or equal to 0.2 cm /g, and more preferably greater than or equal to 0.25 cm /g, and an average pore diameter greater than or equal to 20 Angstroms (20&times;10 m) and preferably greater than or equal to 30 Angstroms (30&times;10 m).

Acid catalyst with a sulfated zirconia base and its uses

Growing community of inventors

Sint-Martens-Lennik, Belgium

Joeri Denayer