| abstract |
Provided is an acidic gas separation membrane equipped with an acidic gas separation layer including a hydrophilic resin and an acidic gas carrier, a hydrophobic porous layer for supporting the acidic gas separation layer, a porous protective layer for protecting the acidic gas separation layer, and a first layer having a Gurley number that is 0.1-30 s and that is no greater than 0.5 times the Gurley number of the hydrophobic porous layer and of the porous protective layer. Also provided are an acidic gas separation method in which the acidic gas separation membrane is used, as well as an acidic gas separation module and an acidic gas separation device provided with the acidic gas separation membrane. |