Crystalline zeolite composition (ecr-5) having a...

Details Crystalline zeolite composition (ecr-5) having a... Crystalline zeolite composition (ecr-5) having a...

B - Operations, Transporting

01

J

252/14

B01J 29/70 (2006.01)

Patent

CA 1259599

ABSTRACT OF THE DISCLOSURE A crystalline zeolite may be prepared which has a composition, in terms of mole ratios of oxides, in the range: 1.0 to 1.3 Na20:A1203:2.1 to 8.0 SiO2 and having a cancrinite-like structure in which the twelveing channel thereof is not blocked by, for example, salt molecules. The preferred compositions are of the formula: 1.1 to 1.3 Na20:A1203:2.4 to 3.1 SiO2 This zeolite may be prepared from crystallization of an aged reaction mixture containing aqueous ammonia, a source of silica, a source of alumina and sodium hydroxide.

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