Isobaric vapour-liquid equilibrium for binary system of cyclohexanol + cyclohexylbenzene at (5, 10, 15, 20 and 25) kPa

• Published in: The Journal of chemical thermodynamics Vol. 144; p. 106086
• Main Authors: Guo, Chunhao, Tang, Yang, Wan, Jinru, Zuo, Yue, Wang, Yong, Wang, Yichang, Wang, Xunqiu
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.05.2020
• Subjects: Cyclohexanol; Cyclohexylbenzene; NRTL; UNIQUAC; Wilson; Cyclohexylbenzene; UNIQUAC; NRTL; Wilson; Cyclohexanol
• ISSN: 0021-9614; 1096-3626
• DOI: 10.1016/j.jct.2020.106086

•Measured the isobaric VLE data of cyclohexanol and cyclohexylbenzene at 5, 10, 15, 20 and 25 kPa.•Thermodynamic consistency of the VLE data was checked with the Herington test and Van Ness test.•VLE data were correlated by NRTL, UNIQUAC and Wilson model.•Binary interaction parameters between cyclohexanol and cyclohexylbenzene were obtained. The isobaric vapour–liquid equilibrium (VLE) data for the binary system of cyclohexanol + cyclohexylbenzene were determined at (5, 10, 15, 20 and 25) kPa with a dynamic recirculating apparatus and the temperature ranged from 358.10 K to 456.43 K, and the thermodynamic consistency of the experimental data was checked by the Herington area method and Van Ness method. Afterwards, the experimental data was correlated with NRTL, Wilson and UNIQUAC model, and the corresponding interaction of thermodynamic models of the binary system parameters were obtained through the Aspen software. The results indicated that all three models represent the experimental values quite well, while the NRTL model provided a slightly better result than Wilson model and UNIQUAC model. The maximum root mean square deviation of the temperature and vapour phase mole fraction for the NRTL model was less than 0.4 K and 0.004, respectively.