摘要
采用固定体积可视观察法测定了在323.2～353.2K温度范围内2-丁醇在CO2中高压相平衡数据.运用Peng-Robinson状态方程(PR)和vanderWaals-2混合规则建立了相平衡模型,并运用Chrastil半经验方程建立了溶解度方程.通过优化计算得到了状态方程中的模型参数,同时得到的Chrastil溶解度方程为c=ρ3.3617·exp(-2198.8193/T+6.5545).二元体系的溶解热为-18.2809kJ/mol.
High pressure vapor-liquid phase equilibrium data of 2-butanol in CO2 from 323. 2 K to 353. 2 K were measured by constant-volume visual method. The phase equilibrium model was established by Peng-Robinson equation of state together with van der Waals-2 mixing rule. The solubility equation was correlated by Chrastil semi-empirical equation. Model parameters were calculated by least-squares optimization procedure. The solubility equation obtained was c = ρ3.3617 ·exp（ 2198. 8193 /T ＋ 6. 5545） ,and the solubility heat of the system was 18. 2809 kJ/mol.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第7期1416-1420,共5页
Chemical Journal of Chinese Universities
