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Head Space Analysis에 의한 Oxazole-Acetonitrile, Oxazole-Water, Acetonitrile-Water계의 Vapor-Liquid Equilibrium에 관한 연구

Vapor-Liquid Equilibria of Oxazole-Acetonitrile, Oxazole-Water, and Acetonitrile-Water Systems by Head Space Analysis

HWAHAK KONGHAK, October 1987, 25(5), 512-521(10), NONE
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Abstract

50 ℃정온하에 oxazole-acetonitrile, oxazole-water, acetonitrile-water계의 기액평형 실험을 head space gas chromatography(H.S.G.C.)에 의한 static method로 수행하였다. 각 2성분계 혼합물중 acetonitrile-water계는 최소공비점을 가지며, 그 외의 혼합물에서는 공비점이 발견되지 않았다.
본 연구에서는 기액평형 데이터 계산에 있어서 새로운 algorithm을 개발하여 종래의 head space analysis에서 행하는 보정곡선을 생략함으로써 실험을 신속히 수행할 수 있었으며, 이 algorithm에 의한 기액평형 데이터는 기 발표된 acetonitrile-water계를 문헌치와 비교함으로써 그 정확성을 증명할 수 있었고, 각 기액평형 데이터는 열역학적으로도 일치하여 계산의 정확성도 확인할 수 있었다.
따라서 본 연구에서 개발한 head space analysis에 따른 기액평형 계산 algorithm과 oxazole-acetonitrile, oxazole-water 기액평형 데이터를 분리조작을 위한 기초 데이터로 제시한다.
Isothermal vapor-liquid equilibria have been determined for oxazole-acetonitrile, oxazole-water, acetonitrile-water at 50 ℃ using head space gas chromatography (H.S.G.C.) as static method. The algorithm of computation is newly made and used in this study. This makes experiment more simply and rapidly.
The system acetonitrile-water forms a minimum b.p azeotrope, while the other two systems did not have the azeotrope. To testify the new algorithm, which used in this study we compared the VLE data of system acetonitrile-water with the literature data, and the thermodynamic consistency test was also carried out.
The result of both attempt were very good. Therefore new data of the vapor-liquid equilibria for the system oxazole-acetonitrile, oxazole-water are reliable, and also with sufficient reliability the new computation algorithm in this study is suggestible.

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