含磷酸盐的三氯化铁水解溶液的化学特征
THE HYDROLYZED AND OTHER CHEMICAL CHARACTERS OF FERRIC CHLORIDE SOLUTION CONTANING PHOSPHATE
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摘要: 通过对含磷酸盐三氯化铁水解溶液的pH弛豫.电导率,可见光光谱和不同化学反应活性组分的分布等一系列化学物理性质的表征,说明在FeCl3-NaH2PO4-NaHCO3溶液体系中,PO43-参与了Fe(Ⅲ)的水解-聚合反应,形成了Fe—OH一Fe和Fe—PO4—Fe结构共同控制溶液性质、使溶液性质发生了从量变到质变的过程,证明PO43-对Fe(Ⅲ)溶液的水解形态有重要影响.Abstract: This paper focuses on the chemical and physical characters of NaH2PO4-NaHCO3 in water solution,including pHrelaxation .conductivity, visible spectra,OH/Fe ratio of polymer and distribution of differental chemical reactive active species. The results show that PO43- is involved in hydrolization and polymerization of Fe (Ⅲ) solution and both Fe-PO4-Fe and Fe-OH-Fe controlling the solution properties together.
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