Cubic β-Fe2O3 as the product of the thermal decomposition of Fe2(SO4)3

被引：42

作者：

Zboril, R

Mashlan, M

Krausova, D

Pikal, P

机构：

[1] Palacky Univ, Dept Inorgan & Phys Chem, Olomouc 77146, Czech Republic

[2] Palacky Univ, Dept Expt Phys, Olomouc 77146, Czech Republic

[3] PRECHEZA, Res Dept, Prerov, Czech Republic

来源：

HYPERFINE INTERACTIONS | 1999年 / 120卷 / 1-8期

关键词：

Thermal Decomposition; Quadrupole Splitting; CEMS; Complete Decomposition; Neel Temperature;

D O I：

10.1023/A:1017018111071

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The thermal decomposition of Fe-2(SO4)(3) in air has been investigated using transmission Mossbauer spectroscopy, CEMS and X-ray powder diffraction. The hexagonal alpha-Fe2O3 and cubic beta-Fe2O3 with spinel structure have been identified as products of the decomposition. The influence of the Fe-2(SO4)(3) particle size on the yield of beta-Fe2O3 in the final product is pointed out and discussed. The size of particles and the calcination temperature are the most important kinetic factors determining the phase composition (beta-Fe2O3/alpha-Fe2O3) of iron (III) oxide.

引用

页码：497 / 501

页数：5

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