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Advances in Mathematical Physics
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Advances in Mathematical Physics
/
2018
/
Article
/
Tab 6
/
Research Article
A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH
3
and CO
2
Adsorption on Zirconia and Zeolite Type 5A
Table 6
Effective diffusion coefficients for sample Z5A-2 at 373 K, p = 1.5 bar.
Before
After
Binary diffusion coefficient
[cm
2
/s]
0.330 (
)
0.157 (
)
Pressure
[bar]
1
1.5
Stagnant gas layer,
[cm]
0.838
0.785
[cm
2
/s]
0.319
0.154