Method of preparing highly siliceous porous crystalline...

Details Method of preparing highly siliceous porous crystalline... Method of preparing highly siliceous porous crystalline...

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B01J 29/06 (2006.01) B01J 29/40 (2006.01) C01B 37/02 (2006.01) C01B 39/04 (2006.01) C01B 39/40 (2006.01) B01J 29/65 (2006.01) B01J 29/70 (2006.01)

Patent

CA 1217754

METHOD OF PREPARING HIGHLY SILICEOUS POROUS CRYSTALLINE ZEOLITES ABSTRACT A process for preparing highly siliceous intermediate pore size zeolites from a forming mixture containing sources of silica, alkali metal cations, organic nitrogen cations and water is provided by using amorphous precipitated silica as the silica source and alkyl amine or diamine as the source of organic nitrogen cations. The use of precipitated silica permits the formulation of a forming mixture having a solids content of greater than about 10 weight percent which results in improved zeolite product synthesis as well as greater control of zeolite product crystal size when amine or diamine directing agents are also present in the zeolite forming mixture.

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