Prediction of in the System Acetone-Benzene-Carbon Tetrachloride

Example 4.2,6 Prediction of [D] in the System Acetone-Benzene-Carbon Tetrachloride 

Cullinan and Toor (1965) presented experimental data for the matrix of Fick diffusion coefficients in the volume average reference velocity frame for the system acetone(l)-benzene(2)-carbon tetrachloride(3) at a temperature of 25°C. Some of their data is shown in Table 3.3. Estimate the Fick matrix [D] at the composition Xj = 0.70, X2 = 0.15, X3 = 0.15 using the predictive method described above. 

SOLUTION The first step is to estimate the Maxwell-Stefan diffusion coefficients from 

The elements of the thermodynamic factor matrix [T] are determined using the NRTL model as described in Table D.2. 

The errors in flux calculations that result from any errors in the prediction of [D] are, 

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