Vapor–Liquid Equilibrium of Toluene/Heptane and Benzene/Cyclohexane Systems with Biobased Cyrene: Experimental Data and Thermodynamic Modeling

IF 2.1 3区 工程技术 Q3 CHEMISTRY, MULTIDISCIPLINARY
Yaqiong Zhao, Hongwei Kang, Yuming Tu, Qunsheng Li, Chencan Du* and Zhongqi Ren*, 
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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.

Abstract Image

甲苯/庚烷和苯/环己烷体系与生物基昔rene的气液平衡:实验数据和热力学模型
在化学工业中,烃类混合物的分离对资源的有效利用至关重要。本文研究了甲苯+庚烷和苯+环己烷两种二元体系的气液平衡(VLE)行为,并考察了生物基溶剂昔rene作为萃取剂在三元体系中的应用。采用非随机双液(NRTL)模型对气液平衡数据进行了关联,结果表明,昔兰尼的加入显著提高了两种二元体系的相对挥发性,其相对挥发性最大可达3,且两种体系的偏差均小于5%。与传统的有机溶剂如SUL、DMSO、NMP和DMF相比,昔兰尼不仅具有良好的分离性能,而且在环境可持续性方面具有显著的优势。结果表明,昔兰尼作为可持续烃分离工艺的绿色替代品具有很大的潜力。
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来源期刊
Journal of Chemical & Engineering Data
Journal of Chemical & Engineering Data 工程技术-工程:化工
CiteScore
5.20
自引率
19.20%
发文量
324
审稿时长
2.2 months
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.
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