Process for preparation of synthetic mordenite molded body

Details Process for preparation of synthetic mordenite molded body Process for preparation of synthetic mordenite molded body

1986-09-19

1989-08-29

Dixon, Jr., William R.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

502 78, C01B 3326

Patent

active

048615714

ABSTRACT:
A synthetic mordenite molded body is prepared by a process wherein a starting mixture comprising, as the main components, a silica source, an alumina source, an alkali source and water is molded into a starting molded body, the molded body is calcined and the calcined molded body is heated in an aqueous solution of sodium silicate. The starting mixture has incorporated therein a mordenite seed crystal powder. When the molded body is calcined, the temperature is elevated by heating to a calcination temperature not lower than 400.degree. C. at an average rate of at least 10.degree. C./min and calcination is conducted at the calcination temperature within a time period of 2 hours. When the calcined molded body is crystallized, an aqueous solution of sodium silicate having an SiO.sub.2 concentration of 7 to 25% by weight, an Na.sub.2 O concentration of 2 to 8% by weight and an SiO.sub.2 /Na.sub.2 O molar ratio of from 0.9 to 4.0 is used as the aqueous solution of sodium silicate.

REFERENCES:
patent: 3436174 (1969-04-01), Sand
patent: 3631262 (1986-12-01), Altomare
patent: 3714366 (1973-01-01), Fukuda et al.
patent: 4081514 (1978-03-01), Sand et al.

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