Zeolite synthesis

Details Zeolite synthesis Zeolite synthesis

1977-07-21

1981-06-23

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

260448C, 423328, C01B 3328

Patent

active

042750474

ABSTRACT:
Whereas previously zeolites of the ZSM-5 family have been synthesized in reaction mixtures in which the presence of alkylammonium ions was considered to be essential, the use of such ions can be avoided if the mixture contains a seed zeolite having a port diameter in the range 5.8 to 7.0. The seed zeolite need not be a member of the ZSM-5 family but can be, for example zeolite nu-1 which has a distinctly different structure. The reaction mixture preferably is limited in alkalinity and preferably contains strong acid anions.

REFERENCES:
patent: 3321272 (1967-05-01), Kerr
patent: 3692475 (1972-09-01), Johnson
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: 3966883 (1976-06-01), Vaughan et al.
patent: 4166099 (1979-08-01), McDaniel et al.
patent: 4175114 (1979-11-01), Plank et al.
Zhdanov, "Molecular Sieve Zeolites-I" ACS, 1971, pp. 36 & 37.

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