Hello Everyone!

I am trying to do the hydrogen absorption reaction in the metal hydride; I am aware that the hydrogen pressure will reduce as the absorption process takes place(provided no leakage occurs otherwise), but then how can we once have the pressure difference/pressure reduction perform the calculations for the amount of the hydrogen absorbed.

I am aware we can use Sievert's formula, but isn't it only available for the lower pressure conditions based on the following paper:

Link:Article Metal hydride hydrogen compressors: A review

I am not sure if we can use the kinetics for the mass absorption in the metal hydride approach for the calculations like the one given below:

m =Ca exp(-Ea/RT)log(Ps/Peq)(rho_ss-rho_s)

Please let me know if anyone has any suggestions about how we can do the calculations for the hydrogen absorption / %wt. Based on the pressure difference observed during absorption. Also, what would be the ideal desorption temperature for LaNi5(I was working on 80C )?