Diagram Example : Pourbaix Diagram for Fe-S-O-H-e- system at 298.15 K

The chemical potential diagram for the Fe-S-O-H-e- system:

  1. The Pseudobinary Pourbaix diagram in the pH-E/V-{log a(S)-log a(Fe)} plot.
    2. The Z axis is completely ignored in the pseudobinary system. The stable polyhedrons for the S containing but Fe non-containing species are treated as a transparent polyhedron with network-bone(edges) structure.




  2. the normal threedimensional Pourbaix diagram.
    The same equilibrium relations are plotted in the three dimensional coordinates. It is clearly indicated that the transparent sulfur species are located in the left-hand side in the Z axis.




  3. the triangle type three dimensional Pourbaix diagram.




  4. the pseudobinary Pourbaix diagram under the management of transparency.



Procedure Description