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A method for measuring the solubility of Disperse Red 60 in supercritical carbon dioxide using variable-volume view cell with in-situ UV–Vis spectrometer
The Journal of Supercritical Fluids ( IF 3.9 ) Pub Date : 2021-05-14 , DOI: 10.1016/j.supflu.2021.105302
Geonhwan Park , Taewan Kim , Youn-Woo Lee

Solubility is an essential thermodynamic property that affects the efficiency of the supercritical dyeing process. There are many methods for measuring solubility in supercritical carbon dioxide. However, for substances with low solubility, there is a significant difference between the various methods, and some methods require additional quantitative analysis or calculations. As an alternative, a UV–Vis spectrometer can be used to measure solubility with high discrimination even at low concentrations. In this study, a method for measuring solubility in supercritical carbon dioxide using an in-situ UV–Vis spectrometer has been established that requires no additional calibration or assumptions. The solubility measurements of the disperse dye were performed at a temperature of 353–413 K and pressure from 15.5 MPa to 25 MPa. In addition, the solubility of benzoic acid was measured at a temperature of 318 K and compared with various literature values to verify this method.



中文翻译:

使用具有原位紫外-可见光谱仪的可变体积观察池测量分散红 60 在超临界二氧化碳中的溶解度的方法

溶解度是影响超临界染色过程效率的基本热力学性质。有许多方法可以测量超临界二氧化碳中的溶解度。但是,对于溶解度低的物质,各种方法之间存在显着差异,有些方法需要额外的定量分析或计算。作为替代方案,即使在低浓度下,紫外-可见分光光度计也可用于以高分辨力测量溶解度。在这项研究中,建立了一种使用原位紫外-可见光谱仪测量超临界二氧化碳中溶解度的方法,该方法不需要额外的校准或假设。分散染料的溶解度测量在 353-413 K 的温度和 15.5 MPa 至 25 MPa 的压力下进行。此外,

更新日期:2021-06-08
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