GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION DEVICE, AND GAS SEPARATION METHOD

To provide a gas separation membrane having satisfactory gas separation selectivity and at the same time excellent in both plasticization resistance and gas permeability, and also to provide a gas separation module, a gas separation device, and a gas separation method that use the gas separation membrane.SOLUTION: The present invention relates to a gas separation membrane 10 comprising a polyimide compound and a compound represented by formula (I) as constituent materials, and a gas separation module, a gas separation device, and a gas separation method that use the gas separation membrane 10. A-(X)(I) (where, Ais an n-valent saturated hydrocarbon group or an n-valent aromatic hydrocarbon group, or an n-valent group obtained by linking two or more groups selected from saturated hydrocarbon groups and aromatic hydrocarbon groups; n is an integer of 2-6. However, unsubstituted straight-chain alkylene groups are excluded from A; X is a hydrogen bonding group comprising a carboxy group, an amide group, a carbamate group, an urea group, or a sulfonamide group; However, primary amino groups, secondary amino groups, hydroxyl groups, and thiol groups are excluded.)SELECTED DRAWING: Figure 1 【課題】十分なガス分離選択性を有し、可塑化耐性に優れ、ガス透過性にも優れたガス分離膜、当該ガス分離膜を用いたガス分離モジュール、ガス分離装置及びガス分離方法の提供。【解決手段】ポリイミド化合物及び式（Ｉ）で表される化合物を構成材料として含むガス分離層１を有するガス分離膜１０、ガス分離膜１０を用いたガス分離モジュール、ガス分離装置及びガス分離方法。Ａａ−（Ｘ）ｎ（Ｉ）（Ａａはｎ価の飽和炭化水素基、ｎ価の芳香族炭化水素基又は飽和炭化水素基及び芳香族炭化水素基から選ばれる２つ以上の基を連結してなるｎ価の基；ｎは２〜６の整数、但し、Ａａは無置換の直鎖アルキレン基を除く；Ｘはカルボキシ基、アミド基、カルバメート基、ウレア基又はスルホンアミド基から成る水素結合性基；但し、１級アミノ基、２級アミノ基、ヒドロキシル基、及びチオール基を有しない）【選択図】図１