Arkema France

Guillaume Ortiz

Cécile Lutz

Quitterie Persillon

Ludivine Bouvier

Serge Nicolas

Sylvie Szendrovics

Sean Michael Stabler

Stéphane Kieger

Jullian Vittenet

Serge Nicholas

Cecile Lutz

The present invention relates to the use of a zeolitic adsorbent material based on faujasite (FAU) zeolite crystals, the Si/AI mole ratio of which is between 1.00 and 1.20, and the non-zeolitic phase (NZP) content of which is such that 0<NZP≤25%, for the non-cryogenic separation of industrial gases by (V)PSA, in particular of the air gases. The invention also relates to respiratory assistance machines comprising at least said zeolitic adsorbent material.

Separation of gases from air

The present invention relates to new zeolitic adsorbent materials which are particularly specific and adapted for the non-cryogenic separation of gases, and more particularly for the separation of nitrogen by adsorption in gas streams such as air, and also for the purification of hydrogen by adsorption of carbon monoxide (CO) and/or nitrogen (N), and also to the use thereof especially for the preparation of medical oxygen in oxygen concentrators for respiratory assistance.

Zeolitic agglomerated material, preparation process and use for non-cryogenic gas separation

Provided is a zeolitic adsorbent material. The material is based on LSX zeolite crystals the particle size distribution of which is characterized by a peak width (2&#x3c3;) in a range from 6.0 to 20.0, limits included, for a number average diameter (d50) in a range from 0.5 &#x3bc;m to 20.0 &#x3bc;m. The material has an Si/Al atomic ratio comprised in a range from 1.00 to 1.15, limits included. The lithium content of the material, expressed by weight of LiO, is in a range from 9% to 12% by weight relative to the total weight of the material. The material has a non-zeolitic phase (NZP) content such that 0&#x3c;NZP&#x2264;8% by weight relative to the total weight of the material.

Zeolite adsorbent material, method of preparation and use for non-cryogenic separation of industrial gases

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%.

Zeolite adsorbents having a high external surface area and uses thereof

The invention relates to an adsorbent article. The adsorbent article contains zeolitic particles which include at least one zeolitic adsorbent. The zeolitic particles are immobilized with at least one resin. According to one embodiment, the resin is in the form of particles, which can be melted to form bridges at points of contact between the zeolitic particles, thus immobilizing the zeolitic particles. The average size of the zeolitic particles can be between 0.03 mm and 3 mm. The zeolitic particles contain at least one zeolite and the zeolite content of the article is at least 60 weight percent, based on the weight of the article. The invention also relates to a method for separating a fluid from another fluid or from impurities, by contacting the fluid with the adsorbent article.

Article with zeolitic particles bonded with resin

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.

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Pau, France

Guillaume Ortiz