Societe Nationale Elf Aquitaine

Elf France

Elf Aquitaine Production

Elf Antar France

Elf Aquitaine

Thierry Des Courieres

Michele J Breysse

Francois Fajula

Joel Patarin

Christophe Geantet

Catherine Zivkov

Jean-Louis Portefaix

Jean-Louis Guth

Francois Figueras

Francesco S Di Renzo

Michel Danot

Didier Anglerot

Michel L Vrinat

Fredj Fitoussi

Elodie Bourgeat-Lami

Pavel Afanasiev

Martine Boulinguiez

Ligia Sierra

Jean Louis Guth

Francoise Guth

Henri Kessler

Jacek Orlewski

Christian Gachet

Martine Cattenot

Crystalline microporous solids of the aluminophosphate type consisting of MeAPO-FAU and MeAPSO-FAU with Me denoting a metal which can adopt tetrahedral coordination in an oxide, for example Co and Zn. The solids are synthesized by hydrothermal crystallization of a gel containing the elements Me, Al, P or Me, Al, P and Si and a structuring agent consisting of a mixture of tetrapropylammonium and tetramethylammonium cations. These solids can be employed in adsorption and also as catalysts in the conversion of organic compounds such as hydrocarbons.

Crystalline microporous solids consisting of aluminophosphates

Process for the synthesis of a silica-enriched crystalline aluminosilicate having the offretite structure from a nucleation gel A containing sources of silicon, aluminium, alkali metal ions, an organic structuring agent and water and a growth gel B containing sources of silicon, aluminium, alkali metal ions and water. The crystals formed are calcined, the ions are replaced by protons and the crystals are subjected to a hydrothermal treatment followed by a treatment with a strong mineral acid. The aluminosilicate formed has a good selectivity in acid catalysis reactions and is characterized by its good stability.

Process for the synthesis of a silica enriched crystalline

Catalyst comprising at least one zirconium oxide, characterized in that it consists, for at least 85% of its weight, of a thermally stable support with a specific surface greater than or equal to 150 m.sup.2 /g containing from 60 to 99 weight % of at least one zirconium oxide and from 40 to 1 weight % of at least one metal oxide of at least one metal chosen from the group consisting of metals from Groups V, VI and VII, noble metals such as ruthenium, osmium, rhodium, iridium and uranium, and the elements phosphorus, arsenic and sulphur, the support being obtained by the molten salts technique by introduction of a mixture of salts into a eutectic mixture of alkali metal nitrates or sulphates which, after dehydration, is maintained between 250.degree. and 550.degree. C., from 30 minutes to 5 hours.

Catalysts based on highly dispersed metal oxides, comprising in

Hydrorefining catalyst containing ruthenium sulphide, its synthesis and

A process is provided for dealuminization of zeolites having large pores, the diameter of the aperture of the pores being greater than or equal to about 0.7 nm and the silica/alumina ratio greater than or equal to about 6. The process comprises acid leaching of the raw zeolite containing the structuring agent. The dealuminized zeolites obtained are useful as catalysts for the transformation of hydrocarbons and as selective organophilic adsorbents.

Process for dealuminization of the synthetic zeolites of large pores,

Catalysts based on a faujasite and its application

Catalyst for hydrorefining hydrocarbon feedstocks including niobium trisulphide, said catalyst is particularly suited for the scission of carbon-nitrogen and carbon-sulphur bonds.

Hydrorefining process employing a niobium trisulfide-containing catalyst

This invention relates to a new zeolite from the class of mazzite, containing a fraction of non-exchangeable potassium cations, and also to a process for its synthesis. The crystallinity and the adsorption capacity of the protonated form of this zeolite are maintained after a prolonged hydrothermal treatment.

Zeolite from the class of mazzite, process for its synthesis, and its

Zeolite catalyst of hexagonal structure and its application

This invention relates to a hydrorefining catalyst containing ruthenium sulphide and cobalt and/or nickel sulphide on a refractory oxides support. These catalysts are only very slightly inhibited by polyaromatic compounds or hydrogen sulphide.

Hydrorefining catalyst containing sulphides of ruthenium and of at least

Zeolite from the class of mazzite, process for its synthesis, an its use

Catalyst for hydrorefining hydrocarbon feedstocks consisting of niobium trisulphide, bulk or deposited on an inert support. This catalyst is particularly efficient for the reactions of scission of carbon-nitrogen and carbon-sulphur bonds.

Catalyst for hydrorefining hydrocarbon feedstocks containing niobium

Process for the synthesis of precursors of molecular sieves of the silicoaluminophosphate type by heating to .gtoreq.100.degree. C. under autogenous pressure a reaction mixture containing sources of silicon, aluminum and phosphorus in the presence of an organic structuring agent and of hydrofluoric acid. The precursor obtained can be converted into molecular sieve by calcination. Molecular sieves of the silicoaluminophosphate type can be used as adsorbants and catalysts for the conversion of hydrocarbons.

Process for the synthesis of precursors of molecular sieves of the

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Lyons, France

Thierry Des Courieres