Synthesis of zeolite ZSM-5

Details Synthesis of zeolite ZSM-5 Synthesis of zeolite ZSM-5

1977-08-15

1978-07-11

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

252431N, 252455Z, 260448C, 423328, C01B 3328, C07F 506

Patent

active

041002628

ABSTRACT:
As synthesized by conventional technique, zeolite ZSM-5 crystals are cubic with some twinning and measure in size over the range of from about 3 .times. 3 microns to about 8 .times. 8 microns. By synthesizing crystalline aluminosilicate zeolite ZSM-5 according to the present method, i.e. in the presence of a tetraureacobalt (II) complex and with a specifically defined reaction mixture composition, the crystalline product will consist of highly twinned rectangular prismatic crystals exhibiting extreme uniformity in size of from about 5 .times. 10 microns to about 10 .times. 20 microns, depending on the ratio of said tetraureacobalt (II) complex to silica in the zeolite synthesis reaction mixture. Synthesis of ZSM-5 in accordance hereto will provide a zeolite with enhanced catalytic activity for certain chemical reactions.

REFERENCES:
patent: 3702886 (1972-11-01), Argauer et al.
patent: 3849463 (1974-11-01), Dwyer et al.
patent: 3947482 (1976-03-01), Albers et al.
patent: 4061717 (1977-12-01), Kerr et al.

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