**4. Conclusions**

In general, the study of the relative stability of the tetracyano-niquelates and hexacyanocobaltates processes of dehydration shows that this depends in the first instance of the interactions of the water molecule with the outside. A more polarizing power metal is the stability of the link M-H2O (for identical structures). Lamellar systems presented an energy barrier that must overcome the water molecules to begin to spread on the system. This barrier is the activation energy that lies in a range between 60 and 500 kJ/mol, depending on the type of water that comes out. In systems where the water molecules of subnetworks are homoge‐ neous, water zeolite is indistinguishable from the coordinated water molecules.

To increase the partial pressure of water in laminar systems, there is an increase in the temperature of dehydration due to the increase in chemical potential of water in the system, and the immediate consequence is reflected in the increase in activation energy.

Studies by X-ray diffraction report the existence of a transition from L0 phase to L1 phase during the dehydration process, and during this transition, the phase change morphology of the material is maintained.

The process of dehydration in the hexacyano-cobaltates, which also presented the two types of water molecules (zeolite and coordinated), is carried out to lower activation energy values (between 60 and 90 kJ/mol) compared to lamellar systems since coordinated molecules are linked weakly to assemble metal.

For molecular materials during dehydration, there was no structural collapse, even if there are changes in the material locally, which has a shrinkage of only 4% of the unit cell.

In future research, we aim to use the lattice Boltzmann method for the characterization of porous medium, which would help with different configurations of porous media.
