Institut Francais Du Pe'trole

Other

Elf France

Francis Raatz

Christine Travers

Christian Marcilly

Pierre Dufresne

Jean-Louis Guth

Jean-Paul Bournonville

Anne-Catherine Faust

Laurent Petit

Jean-Marie Deves

Henri Kessler

Jean-Francois Joly

Germain J Martino

Bernard A Juguin

Jean-Pierre Franck

Philippe Caullet

Agnes Choplin

Jean M Basset

Albert Theolier

Bernard Juguin, Deceased

Alain Seive

Francois Fajula

Joel Patarin

Edouard Freund

Francois Figueras

Dominique A Garnier

Hubert Ajot

Jean Francois Joly

Colette Russmann

By Jeannine Juguin, Legal Representative

By Sylvie Juguin, Legal Representative

Jean-Marc Lamblin

Gisele Coudurier

Thierry Descourieres

Sylvie Juguin

Jeannine Juguin

Felix Marny

The invention relates to a catalyst for isomerization of a C8 aromatic cut containing a mordenite characterized in that said mordenite contains at least one metal of groups IIa, IVb, IIb or IVa and is such that:

Catalyst with a mordenite base containing at least one metal of groups

For the catalytic aromatization of hydrocarbons containing 5 to 9 carbons atoms per molecule, use is made of a catalyst containing a MFI zeolite containing at least one noble metal from the platinum family and at least one additional metal chosen from the group constituted by tin, germanium, lead and indium, and optionally an amorphous matrix.

Process for the aromatization of hydrocarbons containing 5 to 9 carbon

For measuring the adsorption and desorption of a gas adsorbed by a solid sample, a gas pressure drop during the adsorption phase or a gas pressure increase during the desorption phase is programmed in the reservoir circuit 1 from 0.1 to 0.7 Pa per minute by at least one regulating valve V.sub.P1 having a proportional opening, in order to transfer a substantially constant flow of gas to the sample and from the sample to the reservoir, the gas pressure being measured periodically in the measuring circuit by pressure sensors. By a microprocessor, the isotherm of adsorption and desorption is determined based on the volume of the reservoir circuit, the quantity of gas transferred, the gas pressure in the measuring circuit, and the volume of the measuring circuit. The system measures the adsorption-desorption isotherms of a gas from a solid.

Method of and an apparatus for measuring the adsorption and the

For the aromatization of hydrocarbons containing 2 to 4 carbon atoms per molecule in the presence of a specific and preferably acid catalyst, the catalyst contains an MFI zeolite in which is introduced at least one noble metal from the platinum family and at least one additional metal chosen from within the group consisting of tin, germanium, lead and indium, and the catalyst optionally contains an amorphous matrix.

Process for the aromatization of hydrocarbons containing 2 to 4 carbon

The invention relates to a catalyst and a catalytic process for the aromatization of hydrocarbons containing 2 to 4 carbon atoms per molecule. The catalyst contains a MFI zeolite and an amorphous matrix containing at least one noble metal from the platinum family, at least one additional metal chosen from tin, germanium, lead and indium and at least one alkali metal or alkaline earth metal.

Catalyst containing a zeolite, a noble metal from the family of

The object of the invention is a synthetic crystalline zeolite of the mordenite type characterized by:

Mordenite type zeolite and its preparation process

The invention relates to a process for producing an alkylbenzene from benzene and an aliphatic mono-olefin in the presence of a catalyst based on a dealuminized Y zeolite with a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranging from 8 to 70, the product of this reaction being afterwards fractionated into a first fraction containing non converted benzene and a mono-alkylbenzene and a second fraction containing a poly-alkylbenzene, said second fraction reacting then with benzene in the presence of a catalyst based on a dealuminized mordenite with a total atomic ratio Si/Al ranging from 30 to 80. The invention especially applies to the production of ethylbenzene and cumene respectively from ethylene and propene.

Process for producing alkylbenzenes using a catalyst based on a

The object of the invention is a synthetic crystalline zeolite of the beta type characterized by:

Beta type zeolite and its preparation process

The invention relates to a process for isomerizing normal paraffins, particularly C.sub.5 -C.sub.6, in the presence of at least one catalyst based on an omega zeolite having a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranging from 6.5 to 80, a content by weight of sodium lower than 0.2%, crystalline parameters 'a' and 'c' respectively smaller than or equal to 1.814 nm and 0.760 nm, a capacity of adsorption of nitrogen, measured at 77K under a partial pressure of 0.19, higher than about 8% by weight, the catalyst also comprising at least one metal from group VIII of the periodic table of elements, preferably platinum or/and palladium.

Process for isomerizing normal paraffins in the presence of at least one

The invention relates to a catalyst for isomerizing a C.sub.8 aromatic fraction containing a mordenite and at least one metal from group VIII of the periodic classification of elements (such as Pt or Pd), characterized in that the mordenite is such that its skeleton Si/Al atomic ratio is between 6 and 10.5, its sodium weight content is below 2000 ppm, its unit cell volume is between 2.73 and 2.78 nm.sup.3, its benzene adsorption capacity is between 4 and 10% based on the dry mordenite weight and its 1,3,5-trimethylbenzene adsorption capacity is between 0.5 and 2.5% by weight based on the dry mordenite weight. The invention also relates to the preparation of said mordenite.

Mordenite-based catalyst containing at least one metal from group VIII

The invention relates to a catalyst for isomerizing C.sub.8 aromatic fractions, the catalyst containing a mordenite and at least one metal from group VIII of the periodic classification of elements (such as Pt or Pd), characterized in that the mordenite is such that its skeleton Si/Al atomic ratio is between 6 and 10.5, its sodium weight content is below 2000 ppm, its unit cell volume is between 2.73 and 2.78 nm.sup.3, its benzene adsorption capacity is between 4 and 10% based on the dry mordenite weight and its 1,3,5-trimethylbenzene adsorption capacity is between 0.5 and 2.5% by weight based on the dry mordenite weight. The invention also relates to the preparation of the mordenite.

A MFI-based gallosilicate type catalyst is described. The catalyst is characterized by the following composition expressed by weight:

Catalyst of the gallosilicate type and its utilization for the

The invention relates to a process for dewaxing an atomspheric or a vacuum gas oil in the presence of at least one catalyst comprising:

Catalytic dewaxing process

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:

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Acheres, France

Francis Raatz