Group 13 elements aluminates

The product of the second reaction is sodium aluminate, which contains the alumi-nate ion, Al(OH)4. Other main-group elements that form amphoteric oxides are shown in Fig. 10.7. The acidic, amphoteric, or basic character of the oxides of the d-block metals depends on their oxidation state (Fig. 10.8 also see Chapter 16). 

The binary representation is applicable to various other oxide materials. However, an important distinction can be made between borates and other main group element oxide systems, such as aluminates and silicates. In the latter systems cations predominantly reside at sites created by the demands of rigid anionic oxide frameworks. Although some degree of structural control may be obtained by varying cations or by use of template synthesis, the oxide frameworks of these systems tend to be relatively inflexible in comparison with... 

The alkali salts include carbonates, bicarbonates, phosphates, sulphides, bisulphides, silicates, bisulphites, aluminates, hydroxides, acetates, tungstenates, etc. of sodium, potassium, rhodium and caesium. Suitable hydrogenation/ dehydrogenation components can be elements of group V-B, VI-B or group VIII,... 

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