Patent ID: 9321043
Filing Date: 2016-04-26
CPC Classification: B01J,C01B,C09B,C10G

Claim Text:
1. A molecular sieve composition comprising at least one first crystalline molecular sieve and a second crystalline molecular sieve, said molecular sieve composition prepared by a method comprising the steps of: a. providing a reaction mixture comprising at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X, said reaction mixture having the following molar composition:  wherein M is an alkali metal and the amount of water is at least sufficient to permit extrusion of said reaction mixture, wherein said reaction mixture is substantially free of a crystalline molecular sieve except for optional seed crystals, wherein said tetravalent element of said reaction mixture comprising silicon, and said trivalent element of said reaction mixture comprising aluminum; b. extruding said reaction mixture and said at least one crystalline first molecular sieve to form a pre-formed extrudate, wherein said first crystalline molecular sieve comprising at least one of a MCM-22 family molecular sieve, zeolite beta, zeolite Y, mordenite, ZSM-5, ZSM-23, ZSM-11, ZSM-22, ZSM-35 and ZSM-12; and c. crystallizing said pre-formed extrudate in a liquid medium comprising water under liquid phase conditions to form said second molecular sieve of said molecular sieve composition, wherein said second crystalline molecular sieve is different from said first crystalline molecular sieve.