Diffusion in CO2–CH4 Mixtures to 225 Atmospheres Pressure
- 1 March 1954
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 22 (3), 436-437
- https://doi.org/10.1063/1.1740086
Abstract
Diffusion coefficients have been measured in two mixtures of CO2 and CH4. (1) 50 mole percent CO2—50 percent CH4; (2) 75 mole percent CO2—25 mole percent CH4. C14 tagged CO2 was used, so that no gradient in chemical composition was necessary. For the first mixture the results agreed with Enskog's dense gas theory at all temperatures and pressures. For the 75 percent CO2 mixture at 25°C there was a positive deviation from theory, corresponding to the increased importance of glancing collisions for CO2 near saturation. The results are consistent with our previous data for self‐diffusion in the two pure gases.Keywords
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