MICROPOROUS UZM-5 ZEOLITE INORGANIC MEMBRANES FOR SEPARATION GASES, STEAMS AND LIQUIDS Russian patent published in 2015 - IPC B01D71/02 B01D69/02 

FIELD: chemistry.

SUBSTANCE: group of inventions discloses microporous UZM-5 zeolite membranes, methods of their obtaining and methods of the separation of gases, steams and liquids with their application. The microporous UZM-5 zeolite membranes with small pores are obtained by two methods. One of the methods includes the crystallisation in situ of one or more layers of UZM-5 zeolite crystals on a porous membrane substrate. The second method includes crystallisation with a seed in a reaction mixture of the continuous second layer of UZM-5 zeolite crystals on a layer of UZM-5 zeolite crystals, applied on a porous membrane substrate.

EFFECT: obtained membranes in the form of discs, tubes or hollow fibres have high thermal and chemical stability, resistance to erosion, to CO₂ and increased selectivity in the separation of gases, steams and liquids.

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