A carbon dioxide absorbent of an embodiment includes a chain amine, a cyclic amine, and an acid. The chain amine is a compound expressed by Formula (1) of FIG. 1. R1 in Formula (1) is hydrogen or an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R2 in Formula (1) is an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R3 in Formula (1) is hydrogen, a straight alkyl chain having 1 to 7 carbon atoms, a branched alkyl chain having 1 to 7 carbon atoms, or a cyclic alkyl chain having 5 to 7 carbon atoms.
一种实施例的
二氧化碳吸收剂包括一种链胺、一种环胺和一种酸。链胺是由图1的公式(1)表示的化合物。公式(1)中的R1是氢或具有至少一个羟基和1至7个碳原子的烷基链。公式(1)中的R2是具有至少一个羟基和1至7个碳原子的烷基链。公式(1)中的R3是氢、具有1至7个碳原子的直链烷基链、具有1至7个碳原子的支链烷基链或具有5至7个碳原子的环烷基链。