Molecular Sieve Composition From Pre-Formed Extrudates and Process of Use

A process for converting hydrocarbons comprising the step of contacting a hydrocarbon feedstock under conversion conditions with a molecular sieve composition made by the 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:
• Y:X2=2 to infinity
• OH−:Y=0.001 to 2
• M+:Y=0.001 to 2
• 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 (not including the optional seed crystals);
• b. extruding said reaction mixture to form a pre-formed extrudate of said first crystalline molecular sieve;
• and
• c. crystallizing said pre-formed extrudate and a second crystalline molecular sieve in a liquid medium comprising water under liquid phase conditions to form said molecular sieve composition having said first crystalline molecular sieve and said second crystalline molecular sieve;
• wherein said second crystalline molecular sieve is different from said first crystalline molecular sieve.