Diffusion Coefficients of CO, CO2, N2O, and N2 in Ethanol and Toluene

The Taylor dispersion technique was applied for the measurement of diffusion coefficients of dissolved gases in ethanol and toluene. Experiments with the system CO2 in H2O have been made to evaluate the accuracy of the method. The experimental procedure as described provides a fast and highly reproducible method for the determination of diffusion coefficients of dissolved gases in liquids. The diffusion coefficients of CO, CO2, and N2O have been determined in the temperature range of 298-333 K in ethanol and 298-348 K in toluene and of N2 in toluene at 298 K. There is a good agreement between the values as determined in the present work and available literature results at 298 K