A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH₃ and CO₂ Adsorption on Zirconia and Zeolite Type 5A

Table 1

Diffusion coefficient of ionic mobility and ammonia in SZ (d = 0.8 mm) at 383 K.

	0 min^(∗)	20 min
[μm]	1.948	2.040
[μm]	11.8	15.6
[s]	14.8	16.6
Dm [cm^2/s]	8.9 x 10^-8	1.4 x 10^-7
[cm^2/s]	9.4 x 10^-8	1.5 x 10^-7

(∗): 0 min, starting measurement with EIS after 15 min loading in ammonia.