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A corresponding states principle-based equation for the surface tension of Alkenes

机译：烯烃表面张力的基于相应状态原理的方程

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摘要

This study presents a new formula for the surface tension prediction of alkenes. As a first step, an analysis of the available data of the experimental surface tension data for alkenes was performed. The experimental data were collected, after a careful literature survey, for the following pure fluids: propene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-tetradecene, and 1-pentadecene. Then, the experimental data were regressed with the most reliable semi-empirical correlating methods based on the corresponding state theory existing in the literature. As a final step, an analysis of the available data of the experimental surface tension data for alkenes was performed starting from the two recently proposed equations for the prediction of the surface tension of refrigerants based on the corresponding states principle. To minimize the deviation between the predicted data and the experimental data and to find the optimal equation coefficients for experimental data regression, a (μ + λ)-evolution strategy was adopted. The analysis showed that the equation that gave the best results for the prediction of the surface tension of alkenes was the one with a very limited number of parameters. The finally proposed equation is very simple and gives a noticeable improvement with respect to the existing equations. It is based on the corresponding state principle, containing the acentric factor, the critical temperature, and pressure.
机译：这项研究为烯烃的表面张力预测提供了一个新的公式。作为第一步，对烯烃的实验表面张力数据的可用数据进行了分析。经过仔细的文献调查后，收集了以下纯流体的实验数据：丙烯，1-己烯，1-庚烯，1-辛烯，1-癸烯，1-十四碳烯和1-戊烯。然后，根据文献中存在的相应状态理论，采用最可靠的半经验相关方法对实验数据进行回归。作为最后一步，从最近提出的两个基于相应状态原理的制冷剂表面张力预测方程式开始，对烯烃的实验表面张力数据的可用数据进行了分析。为了使预测数据与实验数据之间的偏差最小，并找到用于回归实验数据的最佳方程系数，采用了（μ+λ）演化策略。分析表明，对于烯烃的表面张力的预测，给出最佳结果的方程式是参数数量非常有限的方程式。最终提出的方程非常简单，并且相对于现有方程有明显的改进。它基于相应的状态原理，其中包含偏心因子，临界温度和压力。

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