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Liquid—liquid equilibria of ternary systems of 1-hexene/hexane and extraction solvents

Lin Zhu, Fang-Fang Li, Ji-Qin Zhu, and Zhi-Gang Lei

aState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 266, Beijing 100029, China

 

E-mail: zhujq@mail.buct.edu.cn

Abstract: Olefins and paraffins are important basic chemical raw materials with so similar molecular structure and volatility that their separation is a difficult and energy-consuming process. Liquid–liquid equilibrium (LLE) data were determined for ternary systems of: 1-hexene + hexane + solvent at 25°C, 30°C, and 35°C, and N-formylmorpholine (NFM), N-methyl-2-pyrrolidone (NMP), 7-butyrolactone (GBL), and 1-methylimidazole (1-MEI) as the solvents studied. Liquid–liquid equilibrium data for each system were correlated to the NRTL (Non-Random Two Liquid) equation and the interaction parameters presented. The calculated results agree well with the experimental data.

Keywords: liquid–liquid equilibrium – separation of 1-hexene/hexane – NRTL model

Full paper is available at www.springerlink.com.

DOI: 10.1515/chempap-2015-0238

 

Chemical Papers 70 (5) 585–593 (2016)

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