Molecular sieve catalyst compositions, their production and use in conversion processes
AssigneeExxonMobil Chemical Patents Inc.
InventorMarcel Janssen
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Abstract
The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition a molecular sieve, such as a silicoaluminophosphate and/or an aluminophosphate, hydrotalcite, and optionally a rare earth metal component
Claims43
A catalyst composition comprising a molecular sieve, hydrotalcite, and a rare earth metal component.
A catalyst composition comprising:
- (a) an aluminophosphate or silicoaluminophosphate molecular sieve selected from SAPO-5, SAPO-8, SAPO-11, SAPO-16, SAPO-17, SAPO-1s, SAPO-20, SAPO-31, SAPO-34, SAPO-35, SAPO-36, SAPO-37, SAPO-40, SAPO-41, SAPO-42, SAPO-44, SAPO-47, SAPO-56, AlPO-5, AlPO-11, AlPO-18, AlPO-31, AlPO-34, AlPO-36, AlPO-37, AlPO-46, MCM-2, metal-containing forms thereof, and mixtures, including intergrowths, thereof;
- and
- (b) hydrotalcite.
A process for producing a molecular sieve catalyst composition, the process comprising:
- (a) providing a molecular sieve;
- (b) providing a hydrotalcite composition comprising hydrotalcite and a rare earth metal component;
- and
- (c) combining the molecular sieve and the hydrotalcite composition to produce a molecular sieve catalyst composition.
A process for converting a hydrocarbon oxygenate feedstock to olefins, the process comprising contacting the feedstock with a catalyst composition comprising:
- (a) a molecular sieve;
- and
- (b) hydrotalcite;
- under catalytic conversion conditions, to form a product mixture comprising olefins.
Dependencies are inferred from the claim text.