Abstract This study reports the new VLE data of n-hexadecane in pure propane at 403 Kand in the supercritical solvent mixture (0.527 propane+0.473 n-butane mole fraction) at 403 K, 423 K, and 443 K over the pressure range from (1.22–6.31) MPa. The measurements were made using a high-temperature and high-pressure optical cell.The combined expanded uncertainty of the temperature, pressure, and concentration measurements at 95% confidence level with a coverage factor of k = 2 is estimated at 0.15 K, 0.05%, and 3%, respectively. The measured VLE data for binary propane + hexadecane and ternary propane + n-butane + n-hexadecane mixtures were used to examine the predictive capabilities PC-SAFT and PR EoS.

中文翻译：

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正十六烷在超临界二元丙烷+正丁烷溶剂中的 VLE 特性的测量和建模

摘要 本研究报告了纯丙烷中 403 K 和超临界溶剂混合物（0.527 丙烷 + 0.473 正丁烷摩尔分数）中 403 K、423 K 和 443 K 压力范围内正十六烷的新 VLE 数据（ 1.22–6.31) 兆帕。测量是使用高温和高压光学单元进行的。 温度、压力和浓度测量的组合扩展不确定度在 95% 置信水平和 k = 2 的覆盖系数估计为 0.15 K, 0.05% , 和 3%。二元丙烷 + 十六烷和三元丙烷 + 正丁烷 + 正十六烷混合物的测量 VLE 数据用于检查 PC-SAFT 和 PR EoS 的预测能力。