Crystalline zeolite composition erc-2 and process for its...

Details Crystalline zeolite composition erc-2 and process for its... Crystalline zeolite composition erc-2 and process for its...

C - Chemistry, Metallurgy

01

B

252/2.E

C01B 39/32 (2006.01) B01J 29/60 (2006.01) B01J 29/70 (2006.01)

Patent

CA 1231697

ABSTRACT OF THE DISCLOSURE A synthetic crystalline zeolite is provided characterized by having a composition, in terms of mole ratios of oxides, in the range: 0-9 to 1.1 M2/n0:Al2O3:2.5 to 5.1 SiO2:xH2O wherein M is at least one exchangeable cation, n is the valence of M, and x is 0 to 6, and characterized by having a specified x-ray powder diffraction pattern. The zeolite may be prepared by crystallization from a reaction mixture of KOH (and optionally a minor amount of NaOH), water, a source of silica, and a source of alumina preferably derived from kaolin or halloysite. Most preferably, the source of alumina is metakaolin and the source of silica is potassium silicate.

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