Institut Francais Du Pe'trole

Rhone-poulenc Chimie

Societe Nationale Elf Aquitaine

Henri Kessler

Jean-Louis Guth

Francis Raatz

Joel Patarin

Eric Benazzi

Pierre Dufresne

Christine Travers

Sylvie Lacombe

Jean-Francois Joly

Jean-Paul Bournonville

Philippe Caullet

Jean-Michel Popa

Didier Anglerot

Laurent Petit

Gisele Coudurier

David Marseault

Jean-Luc Guth

Abdallah Merrouche

Alexandre Jouve

Adballah Merrouche

The invention relates to an acidic silicoaluminate solid that has a microporous zeolitic phase that is characterized by at least one infrared band between 400-1600 cm&minus;1, an organized mesoporosity that is characterized by the presence of at least one X-diffraction line between 20-100 &angst;, a silica/alumina molar ratio of between 5-250 and an acidity that is measured by infrared analysis via an area of the band at about 1545 cm&minus;1 at least equal to 50 g of dry solid. The invention also relates to a process for the preparation of the solid, a substrate that consists of solid and at least one matrix, and a catalyst that comprises said solid. The catalyst can be used for the conversion of hydrocarbons and in particular hydrocracking.

Microporous and mesoporous silicoaluminate solid, process for preparation, use as a catalyst and for hydrocarbon conversion

Microporous crystallized gallium phosphate and its substituted derivatives, characterized by:

Crystallised microporous gallium phosphate and its substituted

This invention relates to a crystalline synthetic microporous solid containing gallium and phosphorus, whose crystal structure is of the LTA type. After calcination at a temperature above 200.degree. C. the solid obtained can be employed as a catalyst for converting hydrocarbons or as an adsorbent.

Synthetic microporous solids containing gallium and phosphorous, their

A process for dewaxing of petroleum fractions involves contacting a petroleum fraction charge under appropriate dewaxing conditions with a catalyst containing a zeolite of the MFI structure or a silica with MFI framework topology, the zeolite or the silica having been synthesized in a fluoride medium and having a fluoride content between approximately 0.02 and 1.5% by weight and being characterized by an X-ray diffraction diagram as shown in Table 1 of the specification, a matrix and at least one group VIII or VI B metal of the periodic classification of elements.

Catalyst and its use for a catalytic dewaxing process

Novel MFI zeolites based on the oxides of silicon and titanium, well adapted as selective adsorbents, catalysts and catalyst supports, have the following formula: ##STR1## wherein x ranges from about 0.1 to 6.

Silicon/titanium oxide MFI zeolites

An aluminosilicate type catalyst and its use in the aromatization of a C.sub.2 -C.sub.4 light-gas cut in the presence or not of olefins is described. The catalyst is characterized by the following composition expressed by weight:

Catalyst of the gallium-containing aluminosilicate type and its

The invention relates to a novel process for the synthesis of zeolites of the ferrisilicate type called ferrizeosilites, to the products obtained by this process as well as their uses. Ferrizeosilite according to the invention is characterized by (a) a chemical formula close to the following:

Process for the synthesis of zeolites of the ferrisilicate type,

Catalyst of aluminosilicate type for isomerization of a C.sub.8 aromatic cut, characterized by the following composition, expressed by weight:

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Wittenheim, France

Henri Kessler