C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
252/15
C01B 39/20 (2006.01)
Patent
CA 1275084
PROCESS FOR PREPARATION OF SYNTHETIC FAUJASITE MOLDED BODY ABSTRACT OF THE DISCLOSURE A synthetic faujasite molded body having high purity and high crystallinity is prepared with a good reproducibility by a process wherein a structure-inducing substance is incorporated in a starting material mixture comprising as main components a silica source, an alumina source, an alkali source and water; the mixture is kneaded and molded into a desired shape; and the molded body is heated in an aqueous solution of an alkali metal silicate or hydroxide. The structure-induc- ing material has a composition defined by the following oxide molar ratios: SiO2/A12O2 = 14 to 60, M2O/A12O3 = 15 to 40 and H2O/M2O = 12 to 40 (M = alkali metal), and is prepared by mixing together an aqueous alkali metal silicate solution, an aqueous alkali metal aluminate solution and an aqueous alkali metal hydroxide solution to prepare a liquid phase substance having a composition defined by the following oxide molar ratios: SiO2/A12O3 = 8 to 14, M2O/A12O3 = 7 to 30, and H2O/M2O = 10 to 14, aging the liquid phase substance at 20 to 60°C for 10 minutes to 6 hours; and incorporating an aqueous alkali metal silicate solution into the aged liquid phase substance.
525338
Harada Masashi
Miyazaki Hiroshi
Harada Masashi
Miyazaki Hiroshi
Swabey Ogilvy Renault
Tosoh Corporation
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