Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

Ferrous sulphate was oxidized by potassium chlorate in the pH region 2-7 and at temperatures ranging from 298.1 to 323.1 K and various hydrolytic products of Fe(III) were separated and indentified. The separated solid ferric products were analyzed using a combination of the chemical analysis, IR spectroscopy, X-ray diffraction, and electron microscopy. The following substances were found as major components of the products: Fe₂O₃.n H₂O ("ferric gel"), Fe₂O₃.n H₂O with bound SO^2-₄ ions ("sulphogel"), α-FeO(OH), γ-FeO(OH) and Fe₃O₄. Their amount depends particularly on the pH temperature of the reaction medium.