Water soluble Na[Nb(O2)3]•2H2O as a new molecular precursor for synthesis of sodium niobate

被引：10
|
作者：
Dey, Deepa [1 ]
Petrykin, Valery [1 ]
Sasaki, Satoshi [2 ]
Kakihana, Masato [1 ]
机构：
[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2007年 / 115卷 / 1348期
关键词：
water-soluble molecular precursor; sodium triperoxo niobium; tetraperoxo niobium complex; low-temperature synthesis; NaNbO3;
D O I：
10.2109/jcersj2.115.808
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A water-soluble tetraperoxo niobate [Nb(O-2)(4)](3-) was prepared by reaction of niobic acid with H2O2 at pH = 11 in aqueous ammonia solution. The corresponding ammonium salt, (NH4)(3)[Nb(O-2)(4)], was grown as a single crystal, and its crystal structure was solved. A white precipitate has been obtained from the solution containing (NH4)(3)[Nb(O-2)(4)], and Na2CO3. Based on the elemental, TG, redox titration and Raman spectroscopic analyses, we have concluded that the obtained compound was Na[Nb(O-2)(3)]center dot 2H(2)O. This compound has been demonstrated to be a convenient precursor for synthesis of NaNbO3 by simple calcinations in air at the reduced temperature of 400-500 degrees C.
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收藏
页码：808 / 812
页数：5
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