Department of Chemical Engineering National Taiwan University Principle Investigator : Yan-Ping Chen Research Group : Min-Long Yu Chyau-Song Wu Jung-Chin Tsai Development and Application of Theoretically-based EOS on Phase Equilibrium Calculations

Research Topics  Calculations of Vapor-Liquid Equation of State of Polymer Solutions Using SAFT Equation of State  Correlation of Liquid-liquid Phase Equilibria Using the SAFT Equation of State  Calculation and Prediction of VLE of Polymer Solutions by the GFD Equation of State  Development and Application of an Equation of State for the Square-Well Chain Molecules of Variable Well Width Based on a Modified Coordination Number Model

Correlation of Solid Solubility for Heavy Components in Supercritical Fluids Principle Investigator: Yan-Ping Chen Research Group: Ping-Chin Chen Chung-Chia Huang Jaw-Shin Cheng Department of Chemical Engineering National Taiwan University

Cubic Type Equation of State Plus Excess Volume Model Cubic EOS + G E Model Huron-Vidal type mixing rule coupled with the volume correction term (b E ) is applied Solution Model Approach Modified regular solution model coupled with the Flory- Huggins equation is also applied Research Topics

Fig. 1. Comparison of the experimental and calculated solid solubility of fatty acids at T = K from the EOS/G E + b E model.

Fig. 2. Comparison of the experimental and calculated solid solubility of piroxicam from the solution model.

Experimental Measurements of Phase Equilibrium at High Pressures Principle Investigator: Yan-Ping Chen Research Worker: Kong - Wei Cheng Cheng-Shi Cheng Tz-Bang Du Department of Chemical Engineering National Taiwan University

Research Topics Vapor - Liquid Equilibria of of Binary and Ternary Mixtures in Carbon dioxide at Elevated Pressures Solubility of Solids in Supercritical Carbon dioxide Synthesis Conductive Polymer Composites in Supercritical Carbon dioxide

Fig. 2 VLE results of the binary mixture of CO 2 (1) + ethyl benzoate (2) Fig. 3 Solubility data for benzoin in supercritical carbon dioxide

Fig. 4 Plot of the electrical conductivity of the PPy/PS composite against the doping time Fig.6 Plots of the electrical conductivity against the concentration of FeCl 3. Fig.5 Plots of the electrical conductivity against the concentration of FeCl 3. ○ 30 ℃ and 7.95 MPa ◆ 40 ℃ and10.5MPa ● 50 ℃ and 13.14MPa

Department of Chemical Engineering National Taiwan University Principle Investigator : Yan-Ping Chen Research Group : Yu-Du Hsu Correlation of Mutual Diffusion Coefficients of Binary Liquid Mixtures

Research Topics Binary interaction parameters of nonpolar and polar systems are optimally regressed Correlation of liquid binary mutual diffusion coefficients by using a local composition model (UNIDIF) The overall AAD in 1042 data points is 2.3% Extension to group contribution correlation also indicates satisfactory results with AAD of 3.6%

Fig. 1 Calculated results for the mutual diffusion coefficients of the binary mixture methanol (1) +carbon tetrachloride (2) at 293K