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US 10,118,152 B2Granted
Zeolite material based on mesoporous zeolite
AssigneeArkema France
InventorsLudivine Bouvier, Cecile Lutz, Serge Nicolas
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Abstract
The present invention relates to zeolite materials in the form of agglomerates comprising at least one mesoporous Faujasite zeolite with an Si/Al ratio which is strictly greater than 1.4 and having both the characteristics of mesoporous zeolites, the properties associated with microporosity and the mechanical properties of zeolite agglomerates without mesoporous zeolite. The invention also relates to the process for preparing the said zeolite materials in the form of agglomerates.
Claims24
An agglomerated zeolite material comprising at least one mesoporous zeolite, wherein:
- (1) the mesoporous zeolite has an Si/Al atomic ratio of greater than 1.4 and less than or equal to 6,
- (2) the agglomerated zeolite material has a total zeolite content of at least 30% by weight relative to the total weight of the agglomerated zeolite material,
- (3) the agglomerated zeolite material has a content of mesoporous zeolite of greater than or equal to 30% by weight relative to the total weight of the agglomerated zeolite material,
- (4) the agglomerated zeolite material has a binder content, after calcinations performed at 950° C. for 1 hour, of less than or equal to 70% by weight relative to the total weight of the agglomerated zeolite material,
- (5) the agglomerated zeolite material has a mean volume diameter (D50), or a length (largest dimension when the agglomerated zeolite material is not spherical) of less than 7 mm, and
- either
- (a) the agglomerated zeolite material has a bulk crushing strength (BCS) measured according to standard ASTM 7084-04 of between 0.5 MPa and 6 MPa for an agglomerated zeolite material with a mean volume diameter (D50), or a length (largest dimension when the agglomerated zeolite material is not spherical), of less than 1 mm, limits inclusive, or
- (b) the agglomerated zeolite material has a grain crushing strength, measured according to standards ASTM D 4179 (2011) and ASTM D 6175 (2013), of 0.5 daN to 30 daN for an agglomerated zeolite material with a mean volume diameter (D50), or a length (largest dimension when the agglomerated zeolite material is not spherical), of greater than or equal to 1 mm, limits inclusive,
- wherein the mesoporous zeolite has a mesoporous outer surface area of between 40 m2·g−1 and 400 m2·g−1 as defined by the t-plot method.
6 more elements
Dependencies are inferred from the claim text.