JP-WO2025052716-A5 -

Dates

Publication Date

20260508

Application Date

20240502

Description

Embodiment 11 of the present invention is an MOF membrane composite comprising a support and an MOF membrane which is a CAU-10 type MOF formed on the support , wherein the organic ligand used to form the MOF membrane is one selected from 5-methylisophthalic acid, 5-aminoisophthalic acid, and 5-nitroisophthalic acid. In contrast, when using the clear raw material solution 51 produced in steps S13a, S13b, and S14, the difference in MOF formation conditions between the upper and lower parts of each through-hole 111 is small. As a result, a MOF film of uniform thickness can be formed throughout each through-hole 111 and in all of the through-holes 111. That is, a CAU-10 type MOF film can be formed with small thickness variations in each through-hole 111 and also with small thickness variations between multiple through-holes. The same effect can be obtained even when the support 11 has a shape other than a monolith. <Comparative Example 2: CAU-10-NH 2 > A MOF membrane composite was obtained in the same manner as in Example 2-1, except that the molar ratio of aluminum chloride hexahydrate, 5-aminoisophthalic acid, deionized water, and DMF in the raw material solution for MOF membrane formation was 1:1:134:8. The pH of the Al source solution before mixing was 2.1, and the pH of the raw material solution after mixing was 1.8. Turbidity occurred in the raw material solution. The average film thickness of the MOF membrane in Comparative Example 2 was 4.6 μm. The in-pore evaluation value was 35%. The inter-pore evaluation value was 30%.