| 摘要 |
PROBLEM TO BE SOLVED: To provide an inorganic separation membrane that can remove e.g. a polymer having a fractionation molecular weight of 100-10,000 and dissolved in a solvent at a high separation accuracy and has a high solvent permeation rate, to provide a method for producing the same, and to provide an ultrafiltration membrane. SOLUTION: The inorganic separation membrane is characterized in that it is formed by forming an alumina membrane on the outer surface and/or inner surface of a porous support pipe, and the alumina membrane has a total pore volume of at least 0.2 ml/g, a mean pore diameter D of 1.5-20 nm, and the volume of pores having a pore size of at most 2D accounts for at least 90% of the total pore volume.
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