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Viscosity of Binary Aqueous Solutions Involving Malonic, Maleic, Malic, Tartaric, and Citric Acids in the Temperature Range between 303 and 363 K: Experimental Data and Modeling
Journal of Chemical & Engineering Data ( IF 2.6 ) Pub Date : 2022-08-22 , DOI: 10.1021/acs.jced.2c00041
Alessandro Cazonatto Galvão 1 , Angela Lusa Lodi Savoldi 1 , Pedro Felipe Arce 2 , Weber da Silva Robazza 1
Affiliation  

Kinematic viscosity is a key property for the design of flow systems. This transport property is directly dependent on temperature and concentration and indirectly dependent on molecular interactions that take place in a mixture. Carboxylic acids are a class of chemical compounds with employment in a large variety of processes and applications. The viscosity of carboxylic acid solutions changes due to the acid size and its concentration. The application of models can provide property prediction and generate information about molecular interactions in a mixture. This work studies the kinematic viscosity of binary aqueous solutions of carboxylic acids (malonic, maleic, malic, tartaric, and citric acids) at different temperatures (from 303.2 to 363.2 K with an increment of 10 K) and concentrations (from 0.5 to 3.0 mol·kg–1 with an increment of 0.5 mol·kg–1). The data were treated by the Eyring equation combined with the UNIFAC model. The experimental results and thermodynamic properties indicate that the kinematic viscosity is strongly influenced by the size of carboxylic acid and the molar mass of the binary solution. The suggested modeling showed capability of correlating the experimental data.

中文翻译:

303 至 363 K 温度范围内涉及丙二酸、马来酸、苹果酸、酒石酸和柠檬酸的二元水溶液的粘度:实验数据和建模

运动粘度是流动系统设计的关键特性。这种传输特性直接取决于温度和浓度,间接取决于混合物中发生的分子相互作用。羧酸是一类化合物,可用于多种工艺和应用。羧酸溶液的粘度因酸的大小及其浓度而变化。模型的应用可以提供属性预测并生成有关混合物中分子相互作用的信息。这项工作研究了羧酸(丙二酸、马来酸、苹果酸、酒石酸和柠檬酸)在不同温度(从 303.2 到 363.2 K,增量为 10 K)和浓度(从 0.5 到 3.0 mol)下的运动粘度·kg –1增量为 0.5 mol·kg –1 )。数据采用 Eyring 方程结合 UNIFAC 模型进行处理。实验结果和热力学性质表明,运动粘度受羧酸大小和二元溶液摩尔质量的强烈影响。建议的模型显示了关联实验数据的能力。
更新日期:2022-08-22
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