Abstract: The present invention relates to a process for preparing zeolite crystals having a multimodal particle size distribution, and the sizes of which are between 0.02 ?m and 20 ?m, said process comprising feeding at least two reactors each with a synthesis gel capable of forming zeolite crystals, carrying out a crystallization reaction, in parallel, in each of the at least two reactors, and mixing the reaction media of the at least two reactors, after the start of at least one of the crystallization reactions.

Abstract: An intensified continuous process for synthesizing zeolite crystals is described, said process comprising a continuous supply of a continuously prepared gel, said gel then being continuously crystallized, said process comprising at least one application of ultrasound.

Abstract: The present invention relates to a process for preparing zeolite crystals having a multimodal particle size distribution, and the sizes of which are between 0.02 ?m and 20 ?m, said process comprising a first introduction of one or more seeding agents into the tubular reactor or upstream of the tubular reactor, and at least one second introduction of one or more, identical or different, seeding agents into the tubular reactor.

Abstract: The present invention relates to a process for preparing zeolite crystals continuously, comprising the continuous introduction of a composition capable of generating zeolite crystals into at least one crystallization reaction zone subjected to stirring means, giving said composition a flow characterized by a relative Reynolds number Rer of between 40 and 50 000, and the continuous recovery of the crystals formed according to a flow characterized by a net Reynolds number Ren of between 1 and 1500.

Abstract: The present invention relates to a process for preparing zeolite crystals having a multimodal particle size distribution, and the sizes of which are between 0.02 ?m and 20 ?m, said process comprising a first introduction of one or more seeding agents into the tubular reactor or upstream of the tubular reactor, and at least one second introduction of one or more, identical or different, seeding agents into the tubular reactor.

Abstract: 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 m2·g?1, a non-zeolite phase (PNZ) content such that 0<PNZ?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?Si/Al<2.5, a mesoporous volume of between 0.08 cm3·g?1 and 0.25 cm3·g?1, a (Vmicro?Vmeso)/Vmicro ratio of between ?0.5 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0<PNZ?30%.

Abstract: 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 m2·g?1, a non-zeolite phase (PNZ) content such that 0<PNZ?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 cm3·g?1 and 0.18 cm3·g?1, a (Vmicro?Vmeso)/Vmicro ratio of between ?3 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0<PNZ?30%.

Abstract: An intensified continuous process for synthesizing zeolite crystals is described, said process comprising a continuous supply of a continuously prepared gel, said gel then being continuously crystallized, said process comprising at least one application of ultrasound.

Abstract: The present invention relates to process for synthesizing zeolite X crystals comprising at least one step of adding seeding agent(s) into a synthesis gel and at least one step of forming zeolite X crystals at a temperature strictly greater than 120° C., preferably equal to or greater than 130° C.

Abstract: 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 ?m and 20 ?m, having controlled and optimized crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m2·g?1 and 400 m2·g?1. The present invention also concerns the method for preparing said zeolites with hierarchical porosity.

Abstract: The present invention relates to process for synthesizing zeolite X crystals comprising at least one step of adding seeding agent(s) into a synthesis gel and at least one step of forming zeolite X crystals at a temperature strictly greater than 120° C., preferably equal to or greater than 130° C.

Abstract: 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 m2·g?1 and 400 m2·g?1. The present invention also concerns the method for preparing said Y-type FAU zeolites with hierarchical porosity.

Abstract: 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.

Abstract: The present invention relates to a process for preparing zeolite crystals having a multimodal particle size distribution, and the sizes of which are between 0.02 ?m and 20 ?m, said process comprising feeding at least two reactors each with a synthesis gel capable of forming zeolite crystals, carrying out a crystallization reaction, in parallel, in each of the at least two reactors, and mixing the reaction media of the at least two reactors, after the start of at least one of the crystallization reactions.

Abstract: The present invention relates to a process for preparing zeolite crystals continuously, comprising the continuous introduction of a composition capable of generating zeolite crystals into at least one crystallization reaction zone subjected to stirring means, giving said composition a flow characterized by a relative Reynolds number Rer of between 40 and 50 000, and the continuous recovery of the crystals formed according to a flow characterized by a net Reynolds number Ren of between 1 and 1500.

Abstract: The present invention relates to a zeolite material in the form of FAU zeolite nanocrystal aggregates, to the method for preparing said material, to the zeolite agglomerates prepared from said material with a binder, and to the uses of said material and agglomerate as adsorbents for gas-phase or liquid-phase separation operations, and particularly in methods for separating gas or liquid flows.

Abstract: A method for preparing a paste-like composition including carbon-based conductive fillers, at least one polymeric binder, at least one solvent, and at least one polymeric dispersant being different from the binder. Also, the paste that can result from said method, and to the uses thereof, in pure or diluted form, in particular for the manufacture of Li-ion batteries and super-capacitors.

Abstract: 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 m2·g?1 and 400 m2·g?1. The present invention also concerns the method for preparing said Y-type FAU zeolites with hierarchical porosity.

Abstract: 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 ?m and 20 ?m, having controlled and optimized crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m2.g?1 and 400 m2.g?1. The present invention also concerns the method for preparing said zeolites with hierarchical porosity.

Abstract: The invention relates to a method for separating meta-xylene from C8 aromatic fractions, using a zeolitic adsorbent based on sodium-exchanged or sodium-and-lithium-exchanged agglomerated crystals of zeolite Y, with a large external surface area.