Ferrisilicate molecular sieve and use as a catalyst

Details Ferrisilicate molecular sieve and use as a catalyst Ferrisilicate molecular sieve and use as a catalyst

1987-03-02

1990-08-28

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423594, C01B 3320

Patent

active

049523856

ABSTRACT:
Ferrisilicate molecular sieves of the ZSM-5 type, having SiO.sub.2 /Fe.sub.2 O.sub.3 mole ratios ranging from 20 to 400, are prepared by adding a silica source and a quaternary ammonium salt in that order to an acedified solution of an iron (III) compound, crystallizing the resulting gel to form a ferrisilicate molecular sieve, and thermally treating the molecular sieve with nitrogen, air and/or steam at 300.degree. to 700.degree. C. Preferred thermal treatment comprises treating with nitrogen first, then with air or steam. Thermally treated molecular sieves contain iron both in and outside the crystal framework; most of the non-framework iron is dispersed as very finely divided iron oxides on internal surfaces. Molecular sieves are useful as catalysts in Fischer-Tropsch and other iron oxide-catalyzied reactions.

REFERENCES:
patent: 3702888 (1972-11-01), Argauer et al.
patent: 3941871 (1976-03-01), Dwyer et al.
patent: 4208305 (1980-06-01), Kouwenhoven et al.
patent: 4324696 (1982-04-01), Miale
patent: 4337176 (1982-06-01), Boersma et al.
patent: 4371628 (1983-02-01), Nanne et al.
patent: 4456582 (1984-06-01), Marosi et al.
patent: 4462971 (1984-07-01), Hinnenkamp et al.
patent: 4507404 (1985-03-01), Minderhoud et al.
patent: 4554396 (1985-11-01), Chang et al.
patent: 4564511 (1986-01-01), Desmond et al.
patent: 4708857 (1987-11-01), Leen et al.
Ratnasamy et al., "Structure and Catalytic Properties of Ferrisilicate Zeolites of the Pentasil Group", Proc. Int. Symp. on Zeolite Catalysis, Hungary, May 13-16, 1985.
Tielen et al., "Isomorphic Substitution in Zeolites: It's Potential Catalytic Applications", Proc. Int. Symp. on Zeolite Catalysis, Hungary, May 13-16, 1985.
Chu et al., "Isomorphous Substitution in Zeolite Frameworks", J. Phys. Chem. 89, (1985), pp. 1569-1571.
Szostak et al., "Preparation of Ferrisilicate ZSM-5 Molecular Sieves", J. Catal. 100, (1986), pp. 555-557.

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