| Abstract: | IR and EXAFS spectroscopies were used to study the products of the hydrolysis of iron(III) sulfate. A hypothesis for the structure
of amorphous basic iron sulfate is made from a comparison of its IR spectra and radial atomic distribution curves with the
corresponding data for jarosite. Analysis of the interatomic distances and manifestations of the sulfate ion in the low- and
high-temperature IR spectra shows that in the amorphous product of the hydrolysis, unlike in the jarosite, the sulfate ion
is not involved in the first coordination sphere of the iron atoms, but is held in the structure by hydrogen bonds. Reasons
for the high catalyzing ability of the amorphous basic iron sulfate are suggested.
Institute of Catalysis, Siberian Branch, Russian Academy of Sciences. Translated fromZhurmal Strukturnoi Khimii, Vol. 37, No. 2, pp. 275–282, March–April, 1996.
Translated by I. Izvekova |
