Method for producing aluminosilicates, their use as catalysts an

Details Method for producing aluminosilicates, their use as catalysts an Method for producing aluminosilicates, their use as catalysts an

1980-12-05

1982-08-24

Meros, Edward J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252431P, 252432, 252455Z, 260448C, 423328, 423329, B01J 2906, C01B 3328

Patent

active

043460216

ABSTRACT:
Crystalline aluminosilicates having a high (greater than 10:1) silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as that of ZSM-5 zeolite are prepared by mixing a source of silica, a source of alumina, a source of alkali metal, water and at least one monoalkanolamine selected from monoethanolamine and monopropanolamine or their precursors, the ratio of the source of silica to the source of alumina being at least 20:1 based on the equivalent moles of silica and alumina in their respective sources, and maintaining the mixture at a temperature of about 120.degree. C. or 135.degree. C. or more for a time such that crystallization occurs. Typical crystallization conditions are a temperature in the range 120.degree. to 210.degree. C., a pressure in the range from autogenous to 400 psig and a time not less than 4 hours and up to and in excess of 7 days. The crystalline product so-produced is useful, particularly after modification such as reduction of the alkali metal content as a conversion catalyst and catalyst support.

REFERENCES:
patent: 3702886 (1972-11-01), Argauer et al.
patent: 4089929 (1978-05-01), Christophliemk et al.
patent: 4242233 (1980-12-01), Ball et al.
Charnel L, "Journal of Crystal Growth", vol. 18, 1971, pp. 291-294.
Zeitschrift fur Chemie, 13th Year, Heft 3, 1973, pp. 109-110.
Richter, "Textbook of Organic Chemistry", 2nd Ed., 1948, p. 244.

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