Patent ID: 7595275

Claim:
A methanol-to-olefins conversion catalyst composition comprising: a. a first quantity of molecular sieve particles, each of the molecular sieve particles having i. an exterior surface; ii. an 8-ring structure; and iii. [AlO 4 ], [PO 4 ], and optionally [SiO 4 ]corner-sharing tetrahedral units; and b. a metal oxide deposited substantially on the exterior surface of the molecular sieve particles, the metal oxide having been deposited by i. contacting the molecular sieve particles with a solution of a metal-containing salt and a solvent, the metal-containing salt comprising a salt soluble in water or common organic solvents and a metal selected from the group consisting of Groups 1-12 and the Lanthanides and combinations thereof, the metal-containing salt solution having an anion size larger than the pore size of the molecular sieve particles; ii. drying the molecular sieve particles to remove substantially all of the solvent, thereby depositing the metal-containing salt substantially on the exterior surface of the molecular sieve particles; and iii. treating the molecular sieve particles under conditions sufficient to form a metal oxide, whereby at least a portion of the metal-containing salt is converted to metal oxide.