过量性质,FT-IR光谱分析,和CO2吸收性能的单乙胺与二乙烯糖醇单乙烯或甲基二甲胺二元溶液的二甲基甲基乙烯或甲基二甲胺二元溶液
Maria Magdalena Naum1, Mihaela Neagu2, Vasile Dumitrescu1
1Chemistry Department, Petroleum-Gas University of Ploiesti, 100680 Ploiesti, Romania.
Molecules (Basel, Switzerland)
|April 26, 2025
概括
这项研究研究了单乙胺溶液与二乙烯糖醇单乙烯和甲基二甲胺,确定它们的物理性质和二氧化碳吸收能力. 研究结果揭示了这些二进制系统的关键相互作用和热力学行为.
科学领域:
- 物理化学 物理化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 了解二元溶剂系统的物理特性和相互作用对于优化化学过程至关重要.
- 单甲胺 (MEA) 是一种常见的二氧化碳捕获吸收剂,其与其他溶剂的混合物可以提高性能.
研究的目的:
- 为了确定单乙胺 (MEA) 与二乙烯糖醇单乙烯 (DEGEE) 或甲基二甲胺 (MDEA) 的二元溶液的密度和粘度.
- 分析这些二进制系统的热力学特性,分子相互作用和二氧化碳吸收能力.
主要方法:
- 在各种温度和压力下对密度和粘度的实验性确定.
- 实验数据的相关性使用已建立的物理属性方程 (Herraez,Emmerling等. ) 的情况.
- 计算和分析多余的摩尔体积,粘度偏差和多余的吉布斯能量.
- 福利埃变换红外光谱法 (FT-IR) 用于分子相互作用分析.
- 试验性确定二氧化碳吸收能力.
主要成果:
- 赫尔雷兹和埃默林等等. 这些方程为密度数据提供了最好的相关性.
- 过量的摩尔体积是负的,而粘度偏差和过量的吉布斯激活能是正的.
- FT-IR光谱提供了对二进制溶液中的分子相互作用的见解.
- 二元溶液的二氧化碳吸收能力通过实验量化.
结论:
- 该研究成功地描述了基于MEA的二元溶液的热物理特性和二氧化碳吸收能力.
- 这些发现有助于更好地了解溶剂-溶解物相互作用,并提供用于气体处理应用过程优化的数据.
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