| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixture separation membrane having high resistance against acid and alkali by depositing seed crystals of T-type zeolite on a porous supporting body, dipping the porous supporting body in a mixture liquid prepared by stirring a water-based mixture liquid and ageing for a specified period, and then carrying out hydrothermal reaction to precipitate T-type zeolite. SOLUTION: As for the porous supporting body, ceramics such as alumina and silica, metals such as aluminum and silver, or org. polymers such as polyethylene can be used. After seed crystals are deposited on the porous supporting body, a T-type zeolite film is precipitated. To precipitate the T-type zeolite film on the supporting body, an aq. mixture soln. containing a silica source and alumina source as the source material and sodium ion and potassium ion is stirred and aged for a specified period. Then the porous supporting body with deposition of the seed crystals is dipped in the mixture liquid after aged, and then hydrothermal reaction is performed to precipitate T-type zeolite on the porous supporting body.
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