The thermal decomposition of oxalates. Part VI. The decomposition and surface properties of ferric oxalate

Abstract

Ferric oxalate on thermal decomposition produces an oxide with a porous structure which differs according to the nature of the heat treatment. In particular, there is a marked difference between samples heated directly at temperatures around 400°C and samples heated to this temperature after previous heat treatment at 190°. This is associated with the rapidity of the transformation from an amorphous to a crystalline modification of ferric oxide at about 400°.