화학공학소재연구정보센터
HWAHAK KONGHAK, Vol.31, No.3, 352-360, June, 1993
팔미틴산 및 미리스틴산과 2성분 혼합물의 초임계 이산화탄소에 대한 용해도
Solubilities of Stearic Acid, Palmitic Acid, Myristic Acid and Their Binary Mixtures in Supercritical Carbon Dioxide
초록
순수한 스테아린산, 팔미틴산 및 미리스틴산과 스테아린산-팔미틴산, 팔미틴산-미리스틴산 이성분 혼합 용질계의 초임계 이산화탄소에 대한 용해도를 널리 쓰이고 있는 흐름 방법에 의해 측정하였다. 혼합 용질계에서는 용해도가 작은 물질이 용해도가 큰 물질이 존재할 때에 더 녹았고, 용해도가 큰 물질은 용해도가 작은 물질이 존재할 때에 거의 변화하지 않았다. 그리고 순수한 용질과 혼합 용질의 용해도를 Peng-Robinson 상태방정식과 유와 이의 격자 모델에 근거한 상태 방정식을 써서 계산하고 실험치와 비교하였다.
Solubilities of pure stearic acid, palmitic acid, myristic acid and their binary mixtures in supercritical carbon dioxide were experimentally determined. Flow method was employed in the experiment. The mixed solute data showed that the solubility of the less soluble component increased in the presence of the more soluble component and that the solubility of the more soluble component remains almost constant. Solubility data of pure and mixed solute were fitted using Peng-Robinson equation of state and equations based on the lattice model of You and Lee.
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