GAS SEPARATION MEMBRANE

摘要

Problem to be Solved : To provide a gas separation membrane having an excellent performance balance (balance between gas permeation performance and gas separation ability) as a gas separation membrane. Solution : A gas separation membrane comprising a porous support member and a gas separating resin layer formed on the porous support member, wherein the porous support member has a mode diameter as measured by a mercury porosimeter of from 0.005 µm to 0.3 µm, and a pore size distribution index as measured by the mercury porosimeter of from 1 to 15.