Cubic beta-Fe2O3 as the product of the thermal decomposition of Fe-2(SO4)(3)

Authors
Zboril, R Mashlan, M Krausova, D Pikal, P
Citation
R. Zboril et al., Cubic beta-Fe2O3 as the product of the thermal decomposition of Fe-2(SO4)(3), HYPER INTER, 121(1-8), 1999, pp. 497-501
Citations number
17
Categorie Soggetti
Physics
Journal title
HYPERFINE INTERACTIONS
ISSN journal
03043843 → ACNP
Volume
121
Issue
1-8
Year of publication
1999
Pages
497 - 501
Database
ISI
SICI code
0304-3843(1999)121:1-8<497:CBATPO>2.0.ZU;2-E
Abstract
The thermal decomposition of Fe-2(SO4)(3) in air has been investigated usin g transmission Mossbauer spectroscopy, CEMS and X-ray powder diffraction. T he hexagonal alpha-Fe2O3 and cubic beta-Fe2O3 with spinel structure have be en identified as products of the decomposition. The influence of the Fe-2(S O4)(3) particle size on the yield of beta-Fe2O3 in the final product is poi nted out and discussed. The size of particles and the calcination temperatu re are the most important kinetic factors determining the phase composition (beta-Fe2O3/alpha-Fe2O3) of iron (III) oxide.