Coprecipitation of titanium(IV) and iron(III) complex salts from peroxide-fluoride solutions

被引：4
|
作者：
Bakeeva, N. G. [1 ]
Gordienko, P. S. [1 ]
Pashnina, E. V. [1 ]
机构：
[1] Russian Acad Sci, Inst Chem, Far Eastern Branch, Vladivostok 690022, Russia
来源：
RUSSIAN JOURNAL OF GENERAL CHEMISTRY | 2008年 / 78卷 / 04期
关键词：
Complex Salt; Hydrogen Peroxide Solution; Ammonium Fluoride; Potentiometric Titration Curve; High Whiteness;
D O I：
10.1134/S107036320804004X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Because the salts (NH4)(3)TiO2F5 and (NH4)(3)FeF6 are isostructural, precipitation of the titanium peroxy salt from the (NH4)(2)TiF6-(NH4)(3)FeF6-NH4F-H2O2 system is accompanied by crystal-chemical substitution of ions. As a result of partial peroxolysis, the iron salt coprecipitates with ammonium peroxypentafluorotitanate. If the degree of precipitation is higher than 20%, TiO2 samples of high whiteness can be prepared from the hydrolysis product isolated from such solutions, after annealing at 850C.
引用
收藏
页码：527 / 531
页数：5
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