Improved zeolites and molecular sieves and the use thereof

Details Improved zeolites and molecular sieves and the use thereof Improved zeolites and molecular sieves and the use thereof

C - Chemistry, Metallurgy

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C01B 37/00 (2006.01) B01J 29/06 (2006.01) B01J 35/00 (2006.01) B01J 37/08 (2006.01) C01B 39/02 (2006.01) C01B 39/04 (2006.01) C07B 37/00 (2006.01) C07C 2/66 (2006.01)

Patent

CA 2426034

An improved zeolite having a high number of strong acid sites wherein said zeolite has an AAI of at least (1.0). In a preferred embodiment, such zeolite is produced by controlling conditions after production of the crystalline structure such that loss of tetrahedral aluminium is minimized to thereby provide a zeolite with the above defined AAI.

L'invention concerne une zéolite améliorée présentant un nombre élevé de sites d'acide fort, cette zéolite possédant un AAI (indice d'acidité et d'activité) d'au moins 1Ø Dans un mode de réalisation préféré, une telle zéolite est produite par régulation des conditions succédant à la production de la structure cristalline, de manière que la perte d'aluminium tétrahédral soit minimisée, permettant ainsi d'obtenir une zéolite ayant le AAI tel que défini ci-dessus.

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