Composition for carbon dioxide separation and method for separating carbon dioxide

Abstract

To provide a carbon dioxide separation composition which is excellent in carbon dioxide desorption efficiency (desorption amount/absorption amount) and durability to nitrogen oxides, and a method for separating carbon dioxide. A carbon dioxide separation composition, containing at least one amine compound selected from the group consisting of an amine compound represented by the following formula (1): wherein R1 to R3 each independently represent a hydrogen atom or a C1-4 alkyl group, and an amine compound represented by the following formula (2): wherein R10, R11, R12, R13 and R14 each independently represent a hydrogen atom, a C1-4 alkyl group, a hydroxy group, a hydroxymethyl group, a 2-hydroxyethyl group or a C1-4 alkoxy group, a and b are each independently 0 or 1 and satisfy the relation a+b=1, and R15 is a hydrogen atom, a C1-4 alkyl group, a methoxymethyl group, a methoxyethoxymethyl group or a 2-hydroxyethyl group.

Dependencies are inferred from the claim text.