Arkema France

Ifp Energies Nouvelles

Ceca S.a.

Institut Francais Du Pe'trole

Cece S.a.

Ludivine Bouvier

Catherine Laroche

Serge Nicolas

Philibert Leflaive

Cécile Lutz

Javier Perez-Pellitero

Arnaud Baudot

Marie-Laurence Labede

Quitterie Persillon

Sylvie Szendrovics

Julien Grandjean

Beatrice Boussand

Tom Frising

Guillaume Ortiz

Stéphane Kieger

Jullian Vittenet

Stephane Kieger

Frederic Augier

Nicolas Bats

Damien Leinekugel Le Cocq

Dominique Plee

Patrick Alex

Frédéric Augier

Karine Lopez

Yvan Lecomte

Danielle Richard

Morgane Josserand

Maria Manko

Maxime Moreaud

Anne-Sophie Gay

Guillaume Blancke

Guy-Henri Durand

Alice Medevielle

Florent Moreau

Cècile Lutz

Cecile Lutz

Marie-Laurence LABÈDE

The present invention concerns a zeolitic adsorbent agglomerate comprising at least one zeolite of faujasite type comprising sodium and/or lithium and/or calcium, and/or barium and/or potassium, of porosity between 25% and 45%, and having a standard deviation σ of crystal size distribution in said agglomerate of less than 0.30 μm. The invention also concerns the use of the zeolitic adsorbent agglomerate to separate hydrocarbon mixtures, and the process to separate hydrocarbon mixtures using said zeolitic adsorbent agglomerate.

Zeolitic adsorbent for the separation of hydrocarbon isomers

The present invention relates to zeolite adsorbents based on agglomerated crystals of zeolite X comprising barium, potassium, sodium and strontium. These adsorbents have applications in the separation of fractions of aromatic C8 isomers and in particular xylenes.

Zeolite adsorbents based on barium, strontium, potassium and sodium, preparation process therefor, and uses thereof

The present invention relates to zeolite adsorbents based on agglomerated crystals of zeolite(s) comprising barium and strontium These adsorbents have applications in the separation of fractions of aromatic C8 isomers and in particular xylene.

Zeolite adsorbents containing strontium

Provided is a hybrid process for producing high-purity para-xylene from a feedstock of aromatic hydrocarbon isomer fractions having 8 carbon atoms, in a liquid phase. The process includes a liquid chromatography separation step and a crystallization step of the para-xylene from the purified stream of para-xylene obtained at the separation step.

Hybrid process for producing high-purity para-xylene with toluene solvent

Provided is a zeolite-based adsorbent in the form of agglomerates, where the adsorbent having a tortuosity factor, calculated from the pore distribution determined by mercury intrusion porosimetry, of greater than 1 and less than 3. The adsorbent also has a porosity as determined by mercury intrusion porosimetry of between 25% and 35%. The adsorbent is useful in the field of separations in particular in a process for separating para-xylene from aromatic hydrocarbon isomer fractions containing 8 carbon atoms.

Zeolite adsorbent in the form of low-tortuosity agglomerates

The present invention relates to zeolite adsorbents based on agglomerated zeolite X crystals comprising barium, potassium and sodium. These adsorbents find applications in the separation of aromatic C8 isomer fractions and especially xylene.

Zeolite adsorbents, preparation process therefor and uses thereof

The present invention concerns the use, for gas separation, of at least one zeolite adsorbent material comprising at least one FAU zeolite, said adsorbent having an external surface area greater than 20 m&#xb7;g, a non-zeolite phase (PNZ) content such that 0&#x3c;PNZ&#x2264;30%, and an Si/Al atomic ratio of between 1 and 2.5. The invention also concerns a zeolite adsorbent material having an Si/Al ratio such that 1&#x2264;Si/Al&#x3c;2.5, a mesoporous volume of between 0.08 cm&#xb7;gand 0.25 cm&#xb7;g, a (Vmicro&#x2212;Vmeso)/Vmicro ratio of between &#x2212;0.5 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0&#x3c;PNZ&#x2264;30%.

Zeolite adsorbents having a high external surface area and uses thereof

The present invention concerns the use, for gas separation and/or gas drying, of at least one zeolite adsorbent material comprising at least one type A zeolite, said adsorbent having an external surface area greater than 20 m&#xb7;g, a non-zeolite phase (PNZ) content such that 0&#x3c;PNZ&#x2264;30%, and an Si/Al atomic ratio of between 1.0 and 2.0. The invention also concerns a zeolite adsorbent material having an Si/Al ratio of between 1.0 and 2.0, a mesoporous volume of between 0.07 cm&#xb7;gand 0.18 cm&#xb7;g, a (Vmicro&#x2212;Vmeso)/Vmicro ratio of between &#x2212;3 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0&#x3c;PNZ&#x2264;30%.

The present invention concerns zeolites with hierarchical porosity having a molar ratio Si/Al of between 1 and 1.4, inclusive, of which the average diameter, as a number, is between 0.1 &#x3bc;m and 20 &#x3bc;m, having controlled and optimized crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m&#xb7;gand 400 m&#xb7;g. The present invention also concerns the method for preparing said zeolites with hierarchical porosity.

Zeolites with hierarchical porosity

The present invention relates to zeolitic adsorbents based on small agglomerated crystals of zeolite X comprising barium, combining optimum properties in terms of selectivity and of mechanical strength. These adsorbents have applications in the separation of fractions of aromatic Cisomers and in particular xylenes, in the separation of substituted toluene isomers, such as nitrotoluene, diethyltoluene or toluenediamine, in the separation of cresols and in the separation of polyhydric alcohols, such as sugars.

Zeolitic adsorbents, their process of preparation and their uses

The present invention relates to a zeolitic granular material having a connected zeolitic structure across the entire volume thereof, having high mechanical resistance to crushing in the bed, and optimised material transfer in the macro-mesopores. The invention also relates to the method for preparing said zeolitic granular material, as well as to the use thereof as an adsorbent material in co-current or counter-current liquid phase separation methods, typically in a simulated mobile bed.

Zeolitic granular material having a connected structure

The present invention concerns Y-type FAU zeolites with hierarchical porosity having an Si/Al atomic ratio strictly greater than 1.4 and less than or equal to 6, having controlled and optimised crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m&#xb7;gand 400 m&#xb7;g. The present invention also concerns the method for preparing said Y-type FAU zeolites with hierarchical porosity.

Hierarchically porous zeolites

The present invention relates to zeolitic adsorbents based on agglomerated crystals of FAU zeolite containing barium and/or potassium, with large external surface area, combining optimum properties in terms of selectivity and mechanical strength. These adsorbents find applications in the separation of cuts of C8-aromatic isomers and notably of xylenes, in the separation of isomers of substituted toluene such as nitrotoluene, diethyltoluene, toluenediamine, in the separation of cresols, and in the separation of polyhydric alcohols such as sugars.

Zeolitic adsorbents with large external surface area, process for preparing them and uses thereof

The present invention relates to a zeolite adsorbent having an external surface area of between 20 m&#xb7;gand 70 m&#xb7;g, a mesopore volume (V) of less than or equal to 0.20 cm&#xb7;g, and a content of non-zeolite phase (NZP) of less than or equal to 6%, and in which at least one of its dimensions is greater than or equal to 30 &#x3bc;m. The invention also relates to the process for preparing said zeolite materials in agglomerated form and to the uses thereof for gas-phase or liquid-phase separation operations.

Growing community of inventors

Orthez, France

Ludivine Bouvier