有机物在超临界二氧化碳中的无限稀释扩散系数的测定

陈小娟,钟海敏,余小岚,赖舒慧,陈六平

Measurement of Infinite Dilution Diffusion Coefficients of Organics in Supercritical Carbon Dioxide

Xiao-Juan CHEN,Hai-Min ZHONG,Xiao-Lan YU,Shu-Hui LAI,Liu-Ping CHEN

表1 苯、丙酮在超临界流体CO2中的无限稀释扩散系数

T/K p/MPa 105η/(Pa·s) ρ/(kg·m–3) 108D12/(m2·s–1) 苯   丙酮 实验值 文献值 误差/% 实验值 文献值 误差/% 308.15 10.0 5.542 712.81 1.784 1.800 –0.9   1.847 1.769 4.4 308.15 12.0 6.477 767.07 1.615 1.598 1.1   1.701 1.599 6.4 308.15 14.0 7.131 801.41 1.478 1.516 –2.5   1.520 1.522 –0.1 308.15 15.0 7.411 815.06 1.420 1.466 –3.1   1.476 1.476 0.0 313.15 10.0 4.578 628.61 1.905 2.036 –6.4   2.080 2.121 –1.9 313.15 12.0 5.745 717.76 1.729 1.750 –1.2   1.861 1.960 –5.0 313.15 14.0 6.507 763.27 1.614 1.636 –1.3   1.695 1.705 –0.6 313.15 15.0 6.820 780.23 1.546 1.586 –2.5   1.615 1.655 –2.4 318.15 10.0 3.615 498.25 2.008 2.322 –13.5   2.225 2.148 3.6 318.15 12.0 5.013 657.74 1.836 1.991 –7.8   1.998 1.954 2.2 318.15 14.0 5.883 720.47 1.742 1.806 –3.5   1.856 1.797 3.3 318.15 15.0 6.230 741.97 1.698 1.713 –0.9   1.712 1.732 –1.2 323.15 10.0 3.258 348.33 2.128 2.456 –13.4   2.326 – – 323.15 12.0 4.742 584.71 1.947 2.234 –12.8   2.130 2.234 –4.6 323.15 14.0 5.652 672.17 1.889 2.047 –7.8   1.965 1.959 0.3 323.15 15.0 6.011 699.75 1.846 1.902 –2.9   1.862 1.903 –2.2