화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.58, No.2, 257-265, April, 2020
DOI10.9713/kcer.2020.58.2.257  Export Citation
Application of Flory-Treszczanowicz-Benson model and Prigogine-Flory-Patterson theory to Excess Molar Volume of Binary Mixtures of Ethanol with Diisopropyl Ether, Cyclohexane and Alkanes (C6-C9)
Pinki Kashyap1, Manju Rani1, 2, †, Dinesh Pratap Tiwari1, 3, and So-Jin Park2, †
  • 1Department of Chemical Engineering, Deenbandhu Chhotu Ram University of Science and Technology, Murthal-131 039, India
  • 2Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea
  • 3Rajiv Gandhi Government Engineering College, Kangra-176047, Himachal Pradesh, India
E-mail:,
Densities (ρ) for binary mixtures of ethanol (1) + diisopropyl ether (DIPE) or cyclohexane or alkane (C6-C9) (2) were measured at 298.15 K, 308.15 K and 318.15 K. The excess molar volume ( ) of binary mixtures was calculated using ρ data and correlated with Redlich-Kister polynomial equation. The V EM values for binary mixtures of ethanol (1) + cyclohexane or n-alkane (C6-C9) (2) were positive, whereas for ethanol (1) + DIPE (2) these were negative. The magnitude of V EM values follows the order: cyclohexane > n-nonane > n-octane > n-heptane > n-hexane > DIPE. The V EM values have been interpreted qualitatively and also quantitatively in terms of Flory-Treszczanowicz-Benson (FTB) model and Prigogine-Flory-Patterson (PFP) theory. The V EM values predicted using FTB model agree well with experimental V EM values at all mole fractions. But the PFP theory describes well data in ethanol-rich region (x1 > 0.5) for all binary mixtures and is able to predict the sign of V EM curve for ethanol-lean region (x1 < 0.5) except for ethanol (1) + nonane (2) mixtures.
Keywords:Excess molar volume;Ethanol;DIPE;Alkanes;FTB;PFP
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