Properties of Precipitates Formed by Hydrolysis of Fe3+ Ions in NH4Fe(SO4)2 Solutions
Properties of Precipitates Formed by Hydrolysis of Fe3+ Ions in NH4Fe(SO4)2 Solutions
复制标题
Fe3离子在NH4Fe(SO4)2溶液中水解形成沉淀的性质
DOI：
--
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
I. Czakó
中科院分区：
文献类型：
--
作者：
S. Musić;S. Popović;Z. Orehovec;I. Czakó
利用X射线衍射、57 Fe穆斯堡尔谱和傅里叶变换红外光谱研究了90 ° C和120°C下Fe 3+在NH 4Fe（SO 4）2溶液中水解形成的固相的性质。确定了针铁矿（α-FeOOH）或黄钾铁矾铵（NH 4 Fe 3（SO 4）2）沉淀时NH 4 Fe（SO 4）2的浓度区域。观察到针铁矿粒子的超顺磁性行为。在各种实验条件下沉淀的铵黄钾铁矾的穆斯堡尔参数非常相似。给出了沉淀物的穆斯堡尔谱和红外光谱的解释。
The properties of the solid phases formed by the hydrolysis of Fe3+ ions in NH4Fe(SO4)2 solutions at 90 or 120°C were investigated using X-ray diffraction, 57Fe Mossbauer spectroscopy, and Fourier transform IR spectroscopy. The concentration regions of NH4Fe(SO4)2 were determined for the precipitation of goethite, α-FeOOH or ammonium jarosite, NH4Fe3(SO4)2. Superparamagnetic behavior of goethite particles was observed. Mossbauer parameters of ammonium jarosites, precipitated under various experimental conditions, were very similar. The interpretations of the Mossbauer and FT-IR spectra of the precipitates are given.