2,6-二氯甲苯的相平衡与热物理性质的测定及相关研究,Journal of Chemical & Engineering Data

当前位置： X-MOL 学术 › J. Chem. Eng. Data › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

2,6-二氯甲苯的相平衡与热物理性质的测定及相关研究
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2024-01-21 , DOI: 10.1021/acs.jced.3c00479
Bhamidimarri Ram Bharadwaj _{1,

2} , Kosuru Ravi Kumar _{1,

2} , Pramod Kumar Kommagalla ₁ , Dinesh Kumar Palagummi ₁ , Bankupalli Satyavathi _{1,

2}

Affiliation

本研究总结了 2,6-二氯甲苯的热物理性质和蒸气压数据，2,6-二氯甲苯是农用化学工业中用于生产除草剂的重要中间体。使用 Swietoslawski 型沸点计实验生成 1.2–33.2 kPa 范围内的蒸气压数据。生成的蒸气压数据与 Antoine 方程相关，并且观察到 Antoine 方程表现出最小的偏差。还使用群贡献方法估计了临界特性，主要是 Joback、Constantinou、Gani 和 Nannoolal 方法。使用 Antoine 方程获得的正常沸点与使用 Constantinou 和 Gani 方法获得的沸点更加接近。此外，在 293.15 至 333.15 K 的温度范围内，在 95.5 kPa 下对密度、折射率和粘度等热物理性质进行了实验评估。液体的密度是使用 Joback、Constantinou、Gani 和 Nannoolal 方法通过采用拉克特方程。据观察，Joback 显示出最小的相对平均偏差，为 1.442%。使用曼辛粘度计测量粘度，并使用 Vogel-Tamman-Fulcher 方程对数据进行关联，经比较，发现吻合良好。除此之外，群贡献法Nannoolal、Orrick和Erbar方法被用来估计粘度，其中Orrick和Erbar方法在两者中表现出最小的偏差。除了纯组分（即 2,6-二氯甲苯）的热物理性质和蒸气压数据外，二元系统乙酸 (1) + 2,6-二氯甲苯 (2) 的蒸气液体平衡数据是在三个不同的低于大气压下生成的压力：66.7、60 和 40 kPa。采用NRTL模型对实验数据进行拟合，发现实验数据与预测数据具有良好的相关性。报告了 NRTL 模型的二元相互作用参数，并绘制了T - x - y图，显示了实验数据和预测数据。对三种不同压力下的气液平衡数据进行了热力学一致性检验，结果均通过。

"点击查看英文标题和摘要"

Measurement and Correlation Studies of Phase Equilibria and Thermophysical Properties of 2,6-Dichlorotoluene

The present study summarizes the thermophysical properties and vapor pressure data of 2,6-dichlorotoluene, an important intermediate in the agrochemical industries for the production of herbicides. A Swietoslawski-type ebulliometer was used for generating the vapor pressure data experimentally in the range of 1.2–33.2 kPa. The vapor pressure data generated are correlated with the Antoine equation, and it is observed that the Antoine equation exhibited minimal deviations. The critical properties were also estimated using the group contribution methods, mainly Joback, Constantinou, Gani, and Nannoolal methods. The normal boiling point obtained using the Antoine equation is much closer to the boiling point obtained using the Constantinou and Gani method. Furthermore, the thermophysical properties like density, refractive index, and viscosity were experimentally evaluated at 95.5 kPa for the temperature ranging from 293.15 to 333.15 K. The density of the liquids was estimated using the Joback, Constantinou, Gani, and Nannoolal methods by employing the Rackett equation. It was observed that Joback showed the least relative average deviation of 1.442%. Mansingh viscometer is used to measure the viscosity and used the Vogel–Tamman–Fulcher equation for correlating the data and, on comparison, was found to be in good agreement. Apart from this, group contribution methods Nannoolal, Orrick, and Erbar methods were used to estimate the viscosity, wherein the Orrick and Erbar method showed the least deviation among the two. Other than the thermophysical properties and vapor pressure data for the pure component, i.e., 2,6-dichlorotoluene, vapor liquid equilibrium data for the binary system acetic acid (1) + 2,6-dichlorotoluene (2) is generated at three different subatmospheric pressures, 66.7, 60, and 40 kPa. NRTL model was used to fit the experimental data, and it was found that the experimental data are in good correlation with the predicted data. The binary interaction parameters for the NRTL model were reported, and T–x–y diagrams were also plotted, which show the experimental and predicted data. Thermodynamic consistency tests were conducted for the vapor–liquid equilibrium data at three different pressures, and it was observed that all of them have passed.

更新日期：2024-01-21

点击分享查看原文

点击收藏

阅读更多本刊最新论文

全部期刊列表>>