STRUCTURAL-PROPERTIES OF PRECIPITATES FORMED BY HYDROLYSIS OF FE3+ IONS IN AQUEOUS-SOLUTIONS CONTAINING NO3(-) AND CL- IONS

被引：62

作者：

GOTIC, M ^{[1
]}

POPOVIC, S ^{[1
]}

LJUBESIC, N ^{[1
]}

MUSIC, S ^{[1
]}

机构：

[1] UNIV ZAGREB,FAC SCI,DEPT PHYS,41001 ZAGREB,CROATIA

来源：

JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 09期

关键词：

D O I：

10.1007/BF00363442

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural properties of precipitates formed by hydrolysis of Fe3+ ions in aqueous solutions, containing NO3- and Cl- ions, were investigated. The reactions of hydrolysis were performed in glass autoclaves at 120-degrees-C. X-ray diffraction showed that alpha-FeOOH and alpha-Fe2O3 were present in hydrolytical products formed in solutions containing NO3- ions, while beta-FeOOH and alpha-Fe2O3 were typical hydrolytical products in solutions containing Cl- ions. In the mixed Fe(NO3)3 + FeCl3 solutions, the phase composition of the hydrolytical products was determined by the concentration of the dominant Fe(III)-salt. Fourier transform infrared spectroscopy and Mossbauer spectroscopy were also used for the structural characterizations of the hydrolytical products. Transmission electron microscopy showed a diversity of shapes of the particles, which depended strongly on the experimental conditions. All types of particle, observed by transmission electron microscopy, were interpreted.

引用

页码：2474 / 2480

页数：7

共 21 条

[1] THE ELECTRIC-FIELD GRADIENT AT THE IRON SITES IN BETA-FEOOH [J].