Silicoaluminophosphate molecular sieve

The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder...

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Bibliographische Detailangaben
Hauptverfasser: Mertens, Machteld, Mortier, Wilfried, Verberckmoes, An, Bons, Antonie-Jan, Janssen, Marcel Johannes
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder X-ray diffraction pattern of a calcined sample of said silicoaluminophosphate molecular sieve. It also relates to methods for its preparation and to its use in the catalytic conversion of methanol to olefins.