Diffusion in the System C14O2–CO2 to 1000 Atmospheres Pressure

Diffusion coefficients are presented for the system C¹⁴O₂–CO₂ in the pressure range 100–1000 atmospheres, at temperatures 0°—25°—50°C. In the lower part of the range the results are consistent with those of Robb (see reference 2) and show little temperature coefficient for diffusion at constant density. At higher densities the temperature coefficient increases rapidly. The dense gas theory of Enskog is totally inapplicable, but the results are correlated in the form $${\mathrm{D=D}}_0\exp \mathrm{(-E/RT).}$$ The activation energy (E) at constant density and D₀ are given as a function of density in a form useful for extrapolation.