J. Chem. Eng. Data 1988, 37, 102-104
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plots of :a vs. arrest time are shown in Figures 1 and 2. Taking into account all the precautions discussed above the maximum possible error in the experimental results can be of the order of error in the peak width measurements. Conclusion Arrested flow technique has been used to measure binary gas diffusion coefficients of organic vapors in nitrogen. This technique is the quickest and reasonably accurate method available to the experimentalists today. The observed values of the diffusion coefficients are in excellent agreement with values predicted from Fuller’s correlation, and for the four systems N,-acetone, N,-chloroform, N,-carbon tetrachloride, and N,-nltrobenzene, the experimental values match nicely with those reported in the literature. Experiments are in progress to extend the data base for other organic vapors with nitrogen and hydrogen as the carriers. I t Is also proposed to conduct experiments covering a wider range of temperatures.
Glossary cross-sectlonai area, cm2 binary diffusion coefficient, cm2/s volumetric flow rates, cm3/s flow meter and water-vapor pressure at T,, arrest time, s temperatures of column and flow meter, K column inlet and outlet pressures, atm linear velocity, cm/s peak width at base, cm
atm
at
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