Production of silica-based MFI zeolites

Details Production of silica-based MFI zeolites Production of silica-based MFI zeolites

1991-08-29

1993-09-21

Dees, Carl F.

Chemistry of inorganic compounds

Zeolite

Organic compound used to form zeolite

423705, 423709, C01B 3334

Patent

active

052466884

ABSTRACT:
MFI zeolites based on silicon oxide and, optionally, the oxides of titanium, germanium, zirconium and/or tin, are produced by (1) heating an aqueous, homogeneous reaction mixture which comprises (a) an M.sub.2
SiF.sub.6 complex (I), wherein M is a cation of valency n, optionally, at least one M.sub.2
T'F.sub.6 complex (II), wherein T' is titanium, zirconium, germanium and/or tin, (b) a reagent providing OH. ions by hydrothermal decomposition and a structuring agent (c), e.g., a tertiary amine or a quaternary ammonium compound, whereby a zeolite precipitate is formed therein, and (2) separating and calcining such precipitate to eliminate structuring agent from the pores and channels of the resulting zeolite.

REFERENCES:
patent: 3941871 (1976-03-01), Dwyer et al.
patent: 4564511 (1986-01-01), Desmond et al.
patent: 4941963 (1990-07-01), Valyoscik
patent: 5082641 (1992-01-01), Popa et al.
patent: 5110571 (1992-05-01), Corcoran, Jr. et al.

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