Articles & Issues
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
올리브오일과 올레산에 대한 염화이불화메탄과 이염화이불화메탄의 용해도
Solubility of Chlorodifluoromethane(R-22) and Dichlorodifluoromethane(R-12) in Olive Oil and Oleic Acid
HWAHAK KONGHAK, December 1994, 32(6), 747-752(6), NONE
Download PDF
Abstract
낮은 압력 범위와 몇가지 온도(278-338K)에서 올리브오일과 올레산에 대한 염화이불화메탄(R-22)과 이염화이불화메탄(R-12)의 용해도 값을 구하였다. 용해도에 대한 압력과 온도의존도를 보았으며 R-22에 대한 용해도의 경우에 Raoult의 법칙으로부터 부편차를 보았다. Krichevsky-Kasanovsky식과 Van’t Hoff 표현을 이용하여 용해도 값에 대한 상관관계를 구하였다. 유기 용매에서의 두 가지 가스에 대한 헨리 상수값, 부분 엔탈피 그리고 부분 엔트로피를 구하였다. 온도가 증가함에 따라 용해도는 감소하였고 압력이 증가함에 따라 증가하였다. R-22의 용해도가 R-12보다 높은 값을 보였는데 이를 수소결합이론을 이용하여 정성적으로 설명하였다. 두 가지 가스 모두 올레산보다 올리브기름에 대한 용해도가 더 높은 값을 보였다.
The solubilities of chlorodifluoromethane(R-22) and dichlorodifluoromethane(R-12) in organic solvents were measured in the range of low pressures and several temperatures(278-338K). Organic solvents used in this system were olive oil and oleic acid. Henry’s law is applied in the lower temperature range and the solubilities of R-22 show negative deviations from Raoult’s law. In this study temperature and pressure dependence were correlated. The correlation of gas solubility data, using Krichevsky-Kasarnovsky equation and Van’t Hoff expression are obtained. Values of Henry’s constant, partial enthalpy and partial entropy in organic solvents have been determined for both gases. The solubilities increase with increasing pressure and decreasing temperature and both gases are more soluble in olive oil than in oleic acid. The solubilities of R-22 in organic solvents were higher than those of R-12 because of hydrogen bonding between solvents and solutes.
References
Battino R, Clever HL, Chem. Rev., 72, 395 (1968)
Wisniak J, Hershkowitz M, "Solubility of Gases and Liquids. A Literature Source Guide," Elsevier (1983)
Zellhoefer GF, Ind. Eng. Chem., 29, 584 (1937)
Zellhoefer GF, Copley MJ, Marvel CS, J. Am. Chem. Soc., 60, 1337 (1938)
Wisniak J, Touvia K, Ind. J. Technol., 27, 96 (1989)
Altunin VV, Geller VZ, Kremenevskaya EA, "Thermophysical Properties of FREONS," Springer-Verlag, Berlin (1987)
Prausnitz JM, Lichtenthaler RN, deAzevedo EG, 'Molecular Thermodynamics of Fluid-Phase Equilibria," 2nd ed., Prentice-Hall, Engle-wood Cliffs, NJ (1986)
van Vuuren DS, Hunter JR, Heydenrych MD, Chem. Eng. Sci., 43, 1291 (1988)
Sandler SI, "Chemical and Engineering Thermoydnamics," 2nd ed., Wiley, New York, NY (1989)
Anderson TF, Abrams DS, Grens EA, AIChE J., 24, 20 (1978)
Scales LE, "Introduction to Non-Linear Optimization," Springer-Verlag, New York, NY (1988)
Wisniak J, Hershkowitz M, "Solubility of Gases and Liquids. A Literature Source Guide," Elsevier (1983)
Zellhoefer GF, Ind. Eng. Chem., 29, 584 (1937)
Zellhoefer GF, Copley MJ, Marvel CS, J. Am. Chem. Soc., 60, 1337 (1938)
Wisniak J, Touvia K, Ind. J. Technol., 27, 96 (1989)
Altunin VV, Geller VZ, Kremenevskaya EA, "Thermophysical Properties of FREONS," Springer-Verlag, Berlin (1987)
Prausnitz JM, Lichtenthaler RN, deAzevedo EG, 'Molecular Thermodynamics of Fluid-Phase Equilibria," 2nd ed., Prentice-Hall, Engle-wood Cliffs, NJ (1986)
van Vuuren DS, Hunter JR, Heydenrych MD, Chem. Eng. Sci., 43, 1291 (1988)
Sandler SI, "Chemical and Engineering Thermoydnamics," 2nd ed., Wiley, New York, NY (1989)
Anderson TF, Abrams DS, Grens EA, AIChE J., 24, 20 (1978)
Scales LE, "Introduction to Non-Linear Optimization," Springer-Verlag, New York, NY (1988)
