Synthesizing low sodium crystalline aluminosilicate zeolites wit

Details Synthesizing low sodium crystalline aluminosilicate zeolites wit Synthesizing low sodium crystalline aluminosilicate zeolites wit

1978-04-10

1979-04-24

Hearn, Brian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423329, C07F 506

Patent

active

041511891

ABSTRACT:
A method is disclosed for synthesizing a crystalline aluminosilicate zeolite containing an organic nitrogen cation in the presence of a primary monoalkylamine having 2 to 9 carbon atoms in the alkyl portion. The method produces a zeolite having a very low percentage, i.e. less than about 0.14 weight percent, generally less than about 0.1 weight percent of alkali metal, e.g. sodium, in the as-synthesized form. The product can be used directly as a catalyst without intermediate precalcination and cation exchange. This is not possible with zeolites such as those of the ZSM-5 type synthesized by the methods of the art.

REFERENCES:
patent: 2859234 (1958-11-01), Clem
patent: 3306922 (1967-02-01), Barrer
Fieser et al., Organic Chemistry, D. C. Heath & Co., Boston, 1944, pp. 225-230.

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