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

C - Chemistry, Metallurgy

01

B

252/11

C01B 33/26 (2006.01) B01J 29/18 (2006.01)

Patent

CA 1270805

PROCESS FOR PREPARATION OF SYNTHETIC MORDENITE MOLDED BODY ABSTRACT OF THE DISCLOSURE 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°C at an average rate of at least 10°C/min and calcination is conducted at the calcination temperature within 2 hours. When the calcined molded body is crystallized, an aqueous solution of sodium silicate having an SiO2 concentration of 7 to 25% by weight, an Na2O concentration of 2 to 8% by weight and an SiO2/Na2O molar ratio of from 0.9 to 4.0 is used as the aqueous solution of sodium silicate.

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