对二进制混合物的表面张力进行对模型的评估
Alexandra Metallinou Log1, Vladimir Diky2, Marcia L Huber2
1Department of Energy and Process Engineering, Faculty of Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
International journal of thermophysics
|June 12, 2023
概括
一个新的parachor模型准确地预测了许多二元流体混合物的表面张力,特别是非极性混合物. 然而,它对水有机混合物表现不佳,即使经过调整.
科学领域:
- 物理化学 物理化学
- 热力学是一种热力学.
- 流体属性 流体属性
背景情况:
- 表面张力是各种工业应用中流体混合物的关键性质.
- 准确预测二元混合物的表面张力对于工艺设计和优化至关重要.
- 现有的模型可能在预测不同化学类别的表面张力方面存在局限性.
研究的目的:
- 为二元混合物编制表面张力的实验数据库.
- 为了评估预测二进制混合物中表面张力的一种parachor模型的性能.
- 为了比较模型的预测能力,并没有配套的二进制相互作用参数.
主要方法:
- 编制了一个实验数据库,包含了65种纯流体和154种二进制对的8205个数据点.
- 利用已发表的相关性来确定纯流体的.
- 测试了一个带有和没有单个二进制交互参数的对象模型,并将其与实验数据相匹配.
主要成果:
- 该模型准确地预测了非极性混合物的表面张力 (例如,,芳) 在预测模式下<3%的偏差.
- 极地和极地/非极地混合物 (例如,环氧碳) 需要一个合适的二元相互作用参数,实现<0.35 mN·m-1偏差.
- 该模型显示水有机化合物混合物的性能不佳,无论参数是否合适.
结论:
- 抛物线模型是预测二进制混合物表面张力的可行工具,特别是在非极性系统中.
- 安装的二进制相互作用参数可以提高极性和混合极性系统的准确性.
- 该模型不推用于含有水和有机化合物的混合物.
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