FIELD: chemical industry. SUBSTANCE: described are microporous crystalline silico-alumino-phosphate composition and catalyst materials comprising said composition. Catalysts include silico-alumino-phosphate materials having composition of mixed AE1/CHA phase. Catalysts have longer service life as compared with that or prior art catalysts. EFFECT: improved properties of the composition. 12 cl, 1 dwg, 6 ex, 3 tbl
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