FIELD: chemistry.
SUBSTANCE: invention relates to synthesis of zeolites. A range of crystalline aluminosilicate zeolites, identified as UZM-12, are obtained. The zeolites are characterised by a defined X-ray diffraction pattern. The UZM-12 compositions have ERI topology (erionite) and Si/Al>5.5; they can be prepared in form of nanocrystals with average particle size of 15-50 nm and spheroidal morphology. The UZM-12 composition can be treated to remove at least some atoms of the aluminium framework, obtaining zeolites with Si/Al>5.75, identified as UZM-12HS. UZM-12 and UZM-12HS are capable of catalysing different processes of converting hydrocarbons.
EFFECT: obtaining virtually pure erionite, as well as modification of morphology of crystals, thereby obtaining spherical crystals.
8 cl, 14 ex, 14 tbl, 1 dwg
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