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Received August 28, 2014
Accepted December 31, 2014
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3-메틸펜테인과 에틸렌 글리콜 모노프로필 에테르 및 에틸렌 글리콜 아이소프로필 에테르 혼합물에 대한 2성분계 등온 기-액 상 평형
Isothermal Vapor-liquid Equilibria for the Binary Mixtures of 3-Methylpentane with Ethylene Glycol Monopropyl Ether and Ethylene Glycol Isopropyl Ether
서울대학교 화학생물공학부, 151-742 서울특별시 관악구 관악로 1
School of Chemical & Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
Korean Chemical Engineering Research, June 2015, 53(3), 302-308(7), 10.9713/kcer.2015.53.3.302 Epub 2 June 2015
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Abstract
본 연구에서는 3-Methylpentane을 포함하는 Ethylene glycol monopropyl ether (C3E1) 및 Ethylene glycol isopropylether (iC3E1) 계면활성제 혼합물에 대한 2성분계 기-액 상 평형을 서로 다른 온도 조건(303.15, 318.15, 333.15K)에서 측정 및 비교하였다. C3E1은 분자 내 수소결합과 분자 간 수소결합이 동시에 나타나는 자가 회합 성 물질이므로 상 평형 예측을 어렵게 하는 경향이 있다. 본 연구의 목적은 C3E1 혼합물과 그 이성질체인 iC3E1 혼합물의 상 평형을 각각 측정 및 비교함으로써, 자가 회합 성 물질의 이성질체가 상 평형에 어떠한 영향을 미치는지 알아보는 것이다. 측정된 시스템은 PR-WS-NRTL, PR-WS-UNIQUAC, 그리고 PR-WS-WILSON 모델을 이용하여 각각 계산하고 각 모델의 성능을 비교하였다. 계산에 사용된 모델은 대부분 좋은 결과를 보여주었으며, 특히 PR-WS-NRTL 모델이 가장 좋은 결과를 나타냈다. 또한 측정 시스템 간의 상 평형 차이가 크게 발생하지 않은 것으로 보아 자가 회합 성 물질의 이성질체가 상 평형에 끼치는 영향은 크지 않음을 알 수 있었다.
Isothermal vapor liquid equilibria for the binary system of 3-methylpentane with ethylene glycol monopropyl ether (C3E1) and ethylene glycol isopropyl ether (iC3E1) were measured at 303.15, 318.15, and 333.15K. In our previous work, phase equilibria for the binary system of C3E1 mixtures were investigated according to the chain length of alkane, alcohol or those isomer. But in this study, we discussed the different effect of C3E1 and its isomer, iC3E1, on the phase equilibria. The measured systems were correlated with a Peng-Robinson equation of state (PR EOS) combined with Wong-Sandler mixing rule for the vapor phase, and NRTL, UNIQUAC, and Wilson activity coefficient models for the liquid phase. All the measured systems showed good agreement with the correlation results. And it was found that the phase equilibria showed very little difference between the iC3E1 mixture system and the C3E1 mixture system.
Keywords
References
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