Layered double hydroxides decomposition products

Thermal decomposition of layered double hydroxides typically involves endothermic processes of dehydration, dehydroxylation, and the removal of anions. These treatment processes are of great importance in the production of oxide and oxide-supported catalysts (see Sec. VI.C). For this reason, because of the wide range of metal and anion combinations of interest in this context and because of various preparative methods available, this remains an active area of research. It is, however, a difficult area because of the problems of observing metastable intermediate phases and the poor crystallinity of the thermolyzed material for this reason it employs a range of old and new techniques (1,4,13). 

---