Chemistry of inorganic compounds – Zeolite – Organic compound used to form zeolite
Patent
1992-08-20
1995-01-31
McFarlane, Anthony
Chemistry of inorganic compounds
Zeolite
Organic compound used to form zeolite
4233282, 502 64, 502 79, C01B 3326, B01J 2908
Patent
active
053857178
ABSTRACT:
An aluminosilicate gel containing a structuring agent ST and having a composition appropriate for crystallizing as a zeolite of the faujasite structural family is prepared and then subjected to a crystallization to form a zeolite precursor consisting of the said zeolite containing the structuring agent ST in its cavities and channels, and zeolite is produced by calcination of the said precursor. The structuring agent ST consists of at least one compound chosen from the polyalkylene oxides of the formula ##STR1## in which R and R', which are identical or different, each represent H or a C.sub.1 to C.sub.4 alkyl radical, X denotes H or OH, m is equal to 2 or 3 and may be different from one unit to the next and n is a number larger than 12 and preferably between 25 and 800. The zeolites obtained have a Si:Al ratio which is larger than 1 and may exceed 3 and they have a cubic symmetry. These zeolites are usable, directly or after cation exchange, as adsorbents or as catalyst components.
REFERENCES:
patent: 5098686 (1992-03-01), Delprato et al.
Anglerot Didier
Dougnier Francois
Guth Jean-Louis
Patarin Joel
McFarlane Anthony
Societe Nationale Elf Aquitaine
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