They have framework structures similar to zeolites and some are used as catalysts, ion-exchangers or molecular sieves.

[6] When heated, crystalline AlPO4 (berlinite) converts to tridymite and cristobalite forms, and this mirrors the behaviour of silicon dioxide.

[7] There are many types of aluminium phosphate molecular sieves, generically known as "ALPOs".

[7] The aluminophosphate framework structures vary one from another in the orientation of the AlO4 tetrahedra and PO4 tetrahedra to form different-sized cavities, and in this respect they are similar to the aluminosilicate zeolites, which differ in having electrically charged frameworks.

Aluminium adjuvant use is widespread due to its cheap price, long history of use, safety and efficiency with most antigens.