Thermophysical properties: binary diffusion coefficients at 1 atm

From Thermal-FluidsPedia

	Substance A	Substance B	T(K)	DAB (m2/s)
Gases	NH3	Air	298	0.28 × 10-4
	H2O	Air	298	0.26 × 10-4
	CO2	Air	298	0.16 × 10-4
	H2	Air	298	0.41 × 10-4
	O2	Air	298	0.21 × 10-4
	Acetone	Air	273	0.11 × 10-4
	Benzene	Air	298	0.88 × 10-5
	Naphthalene	Air	300	0.62 × 10-5
	Ar	N2	293	0.19 × 10-4
	H2	O2	273	0.70 × 10-4
	H2	N2	273	0.68 × 10-4
	H2	CO2	273	0.55 × 10-4
	CO2	N2	293	0.16 × 10-4
	CO2	O2	273	0.14 × 10-4
	O2	N2	273	0.18 × 10-4
Dilute solutions	Caffeine	H2O	298	0.63 × 10-9
	Ethanol	H2O	298	0.12 × 10-8
	Glucose	H2O	298	0.69 × 10-9
	Glycerol	H2O	298	0.94 × 10-9
	Acetone	H2O	298	0.13 × 10-8
	CO2	H2O	298	0.20 × 10-8
	O2	H2O	298	0.24 × 10-8
	H2	H2O	298	0.63 × 10-8
	N2	H2O	298	0.26 × 10-8
Solids	O2	Rubber	298	0.21 × 10-9
	N2	Rubber	298	0.15 × 10-9
	CO2	Rubber	298	0.11 × 10-9
	He	SiO2	293	0.4 × 10-13
	H2	Fe	293	0.26 × 10-12
	Cd	Cu	293	0.27 x 10-18
	Al	Cu	293	0.13 x 10-33

Assuming ideal gas behavior, the pressure and temperature dependence of the diffusion coefficient for a binary mixture of gases may be estimated form the relation D_AB∝p^-1T^3/2

References

Faghri, A., and Zhang, Y., 2006, Transport Phenomena in Multiphase Systems, Elsevier, Burlington, MA.

Faghri, A., Zhang, Y., and Howell, J. R., 2010, Advanced Heat and Mass Transfer, Global Digital Press, Columbia, MO.

Further Reading

External Links