{"title":"Vapor–Liquid Equilibrium of Toluene/Heptane and Benzene/Cyclohexane Systems with Biobased Cyrene: Experimental Data and Thermodynamic Modeling","authors":"Yaqiong Zhao, Hongwei Kang, Yuming Tu, Qunsheng Li, Chencan Du* and Zhongqi Ren*, ","doi":"10.1021/acs.jced.5c00281","DOIUrl":null,"url":null,"abstract":"<p >Separation of hydrocarbon mixtures is essential for the efficient utilization of resources in the chemical industry. In this study, we investigated the vapor–liquid equilibrium (VLE) behavior of two binary systems, toluene + heptane and benzene + cyclohexane, and examined the application of the biobased solvent, Cyrene, as an extractant in the ternary systems. The vapor–liquid-phase equilibrium data were correlated by a nonrandom two-liquid (NRTL) model, and the results showed that the addition of Cyrene significantly increased the relative volatility of the two binary systems up to 3, and the deviation of all systems was less than 5%. Compared with conventional organic solvents such as SUL, DMSO, NMP, and DMF, Cyrene not only demonstrated good separation performance but also offered significant advantages in terms of environmental sustainability. The results suggest that Cyrene has great potential as a green alternative for sustainable hydrocarbon separation processes.</p>","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"70 9","pages":"3690–3700"},"PeriodicalIF":2.1000,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical & Engineering Data","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jced.5c00281","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Separation of hydrocarbon mixtures is essential for the efficient utilization of resources in the chemical industry. In this study, we investigated the vapor–liquid equilibrium (VLE) behavior of two binary systems, toluene + heptane and benzene + cyclohexane, and examined the application of the biobased solvent, Cyrene, as an extractant in the ternary systems. The vapor–liquid-phase equilibrium data were correlated by a nonrandom two-liquid (NRTL) model, and the results showed that the addition of Cyrene significantly increased the relative volatility of the two binary systems up to 3, and the deviation of all systems was less than 5%. Compared with conventional organic solvents such as SUL, DMSO, NMP, and DMF, Cyrene not only demonstrated good separation performance but also offered significant advantages in terms of environmental sustainability. The results suggest that Cyrene has great potential as a green alternative for sustainable hydrocarbon separation processes.
期刊介绍:
The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.