In this work, the stopped-flow technique is used to determine the kinetics data in terms of pseudo first-order rate constants (k₀) for the homogenous reaction of CO₂ into aqueous solutions of 3-dimethylaminopropylamine (DMAPA) and 3-diethylaminopropylamine (DEAPA) as amine concentrations ranged from 0.05 kmol/m³ to 0.15 kmol/m³ and temperature ranged from 293 K to 313 K. It is found that k₀ increased with increasing temperature and with increasing amine concentration. The mechanism of the pseudo first-order chemical reaction hypothesis is applied to interpret the experimental data. The Arrhenius expressions as ${\text{k}}_2=8.69\times {10}^9\times \exp (-4226.2/\text{T})$ for DMAPA and ${\text{k}}_2=7.21\times {10}^{12}\times \exp (-6162.9/\text{T})$ for DEAPA are obtained. The results show that the experimental CO₂ absorption rates exhibited good agreement with predicted CO₂ absorption rates with an average relative deviation (ARD) of 2.34% and 7.53%, respectively. Finally, the interaction of tertiary amine groups with primary amine groups and the effect of molecular structure on the interaction are discussed by comparing the CO₂ absorption and desorption performances in five different systems (MEA, DEEA, MEA + DEEA, DMAPA, DEAPA). It is found that the intermolecular interaction of amino groups is stronger than that of intramolecular interaction.

在这项工作中，使用停流技术来确定动力学数据，该数据是关于伪造的一级速率常数（k ₀），用于将CO ₂均匀反应成3-二甲基氨基丙胺（DMAPA）和3-二乙基氨基丙胺的水溶液（DEAPA），因为胺浓度为0.05 kmol / m ³至0.15 kmol / m ³且温度范围为293 K至313K。发现k ₀随着温度的升高和胺浓度的增加而增加。用伪一级化学反应假说的机理来解释实验数据。Arrhenius表示为${\text{ķ}}_{\mathrm{2个}}=8.69\times {10}^9\times \mathrm{经验值}（-4226.2/\text{Ť}）$ 对于DMAPA和 ${\text{ķ}}_{\mathrm{2个}}=7.21\times {10}^{12}\times \mathrm{经验值}（-6162.9/\text{Ť}）$获得DEAPA。结果表明，实验的CO ₂吸收率表现出与预测的CO吻合₂吸收率与分别2.34％和7.53％，平均相对偏差（ARD）。最后，通过比较五个不同系统（MEA，DEEA，MEA + DEEA，DMAPA，DEAPA）中的CO ₂吸收和解吸性能，讨论了叔胺基团与伯胺基团的相互作用以及分子结构对相互作用的影响。发现氨基的分子间相互作用比分子内的相互作用强。