4.4 Article

Isobaric Vapor-Liquid Equilibrium Data at 101.3 kPa for the Binary System Acetamide plus N,N-Dimethyl Formamide and the Quaternary System sec-Butyl Alcohol plus sec-Butyl Acetate plus Acetamide plus N,N- Dimethyl Formamide

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JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷 67, 期 9, 页码 2426-2434

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AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.2c002802426J

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In this study, VLE data for acetamide + DMF, SBA + SBAC + acetamide + DMF were measured and found to be thermodynamically consistent. Binary interaction parameters were obtained for the DMF-acetamide system using different models, and the VLE data were predicted and compared. The results showed that the addition of acetamide and DMF as a mixed solvent significantly enhanced the volatility of SBAC compared to SBA.
Isobaric vapor-liquid equilibrium (VLE) data for the binary system acetamide + N,N-dimethyl formamide (DMF) and the quaternary system sec-butyl alcohol (SBA) + sec-butyl acetate (SBAC) + acetamide + DMF were measured at 101.3 kPa. The VLE data were verified to be thermodynamically consistent by the Fredenslund test and Wisniak's L-W test. In addition, the binary interaction parameters of UNIQUAC, Wilson, and NRTL models for DMF-acetamide were obtained by correlating the binary VLE data. UNIQUAC, Wilson, NRTL, and COSMO-UNIFAC models were employed to predict the VLE data, and the results were compared with the experimental results. Compared with the result without entrainers, the effect of mixed solvent acetamide + DMF (the mass ratio of acetamide to DMF is 1:1) can enhance the relative volatility of SBAC to SBA obviously.

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