Abstract Amine-based carbon dioxide absorbent has the characteristics of high selective absorption rate and strong absorption capacity and occupies the leading position in the carbon dioxide absorption process. The absorption performance of amine carbon dioxide absorbents is directly related to their thermodynamic properties. Accordingly, for the selection of new absorbents, the important thermodynamic properties such as the excess molar enthalpy of the system must be determined first. In this paper, the excess molar enthalpies for amine-based carbon dioxide absorbents in water were measured with C-80 calorimeter at atmospheric pressure. With the experimental data in this work and the literature data, the relationship between the molecular structure and excess molar enthalpy of amine-based carbon dioxide absorbent was studied.

中文翻译：

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分子结构对胺基二氧化碳吸收剂和水过量摩尔焓的影响

摘要 胺基二氧化碳吸收剂具有选择性吸收率高、吸收能力强的特点，在二氧化碳吸收工艺中处于领先地位。胺类二氧化碳吸收剂的吸收性能与其热力学性质直接相关。因此，对于新吸收剂的选择，必须首先确定重要的热力学性质，例如系统的过量摩尔焓。在本文中，胺基二氧化碳吸收剂在水中的过量摩尔焓是用 C-80 量热计在大气压下测量的。结合本工作中的实验数据和文献资料，研究了胺基二氧化碳吸收剂的分子结构与过量摩尔焓之间的关系。