CHABAZITE-CONTAINING MOLECULAR SIEVE, ITS SYNTHESIS AND ITS USE IN THE CONVERSION OF OXYGENATES TO OLEFINS

A crystalline material substantially free of framework phosphorus and comprising a CHA framework type molecular sieve with stacking faults or at least one intergrown phase of a CHA framework type molecular sieve and an AEI framework type molecular sieve, wherein said material, in its calcined, anhyd...

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Main Authors AFEWORKI, MOBAE, COLLE, THOMAS H, MURAOKA, MARK T, CAO, GUANG, KLIEWER, CHRIS, GURAM, ANIL S, STROHMAIER, KARL G, HALL, RICHARD B, SAXTON, ROBERT J, BONS, ANTONIE JAN, MORTIER, WILFRIED J, LI, HAILIAN, MERTENS, MACHTELD M, YODER, JEFFREY C
Format Patent
LanguageEnglish
French
Published 14.07.2009
Subjects
CHEMISTRY
COMPOUNDS THEREOF
CRACKING HYDROCARBON OILS
FUELS
INORGANIC CHEMISTRY
LUBRICANTS
METALLURGY
MINERAL WAXES
NON-METALLIC ELEMENTS
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Summary:A crystalline material substantially free of framework phosphorus and comprising a CHA framework type molecular sieve with stacking faults or at least one intergrown phase of a CHA framework type molecular sieve and an AEI framework type molecular sieve, wherein said material, in its calcined, anhydrous form, has a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to about 0.5. The material exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene. L'invention concerne un matériau cristallin sensiblement dépourvu de phosphore cadre et comprenant un tamis moléculaire du type à cadre CHA avec défauts d'empilage ou au moins une phase imbriquée de tamis moléculaire du type à cadre CHA et un tamis moléculaire du type à cadre AEI. Ledit matériau, dans sa forme calcinée, anhydre, a une composition qui fait intervenir la relation molaire: (n)X¿2?O¿3?:YO¿2?, X étant un élément trivalent, Y étant un élément tétravalent et n étant compris entre 0 et environ 0,5. Le matériau assure une activité et une sélectivité dans la conversion du méthanol en oléfines inférieures, en particulier ethylène et propylène.
Bibliography:Application Number: CA20042548315