SOLUBILITIES OF CARBON DIOXIDE IN MIXTURES OF n-DECANE-n-HEXADECANE AND n-HEPTANE-TOLUENE

• 作 者: 章连众 Helmut Knapp
• 机 构: Institut for Thermodynamik und Reaklionstechnik, Technische Universitat Berlin, Straβe des 17. Juni
• 出 处: Chinese Journal of Chemical Engineering
• 发表日期: 1996年02期
• 关键词: interpolation mixtures constants solubility Gibbs excess toluene thermodynamic b

Solubilities of CO_2 in binary mixtures of n-decane-n-hexadecane and n-heptane-toluenewere measured in a glass apparatus by a synthetic method.Henry’s constants at several temperaturesand solvent compositions were reported.While the Henry’s constants of CO_2 in mixtures of decaneand hexadecane can be satisfactorily predicted by a simple linear interpolation,prediction of Henry’sconstants for CO_2 in mixtures of heptane and toluene requires excess Gibbs energy of the solvent mix-tures.The standard thermodynamic functions of solution(ΔH~0,ΔG~0,and ΔS~0)were reported.

Solubilities of CO_2 in binary mixtures of n-decane-n-hexadecane and n-heptane-toluenewere measured in a glass apparatus by a synthetic method. Henry’s constants at several temperatures and solvent compositions were reported. Whilst the Henry’s constants of CO_2 in mixtures of decane and hexadecane can be satisfactorily predicted by a simple linear interpolation, prediction of Henry’s condition for CO_2 in mixtures of heptane and toluene requiring excess Gibbs energy of the solvent mix-tures. The standard thermodynamic functions of solution (ΔH ~ 0, ΔG ~ 0, and ΔS ~ 0) were reported.