Pourbaix diagrams aluminum-water system

Figure 4.3. Pourbaix diagram for the aluminum-water system at 25°C [2]. (M. Pourbaix, Atlas of Electrochemical Equilibria in Aqueous Solutions, 2nd English edition, p. 171, copyright NACE International 1974 and CEBELCOR.)...

The potential-pH diagram (Pourbaix diagram) for the aluminum-water system at 298 K is shown in Fig. 3-1 (Pourbaix, 1966). The equilibrium diagram must be applied to realistic cases in particular it is valid in the absence of substances with which aluminum can form soluble complexes or insoluble salts. The aluminum complexes are those formed with the organic anions such as acetate, citrate, tartrate, oxalate, etc., and fluorine complexes. 

Figure 3-1. Potential-pH diagram (Pourbaix diagram) for the system aluminum-water at 298 K.

Figure 2.21 Pourbaix diagram for the aluminum-water system at 25°C...

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