Water Soluble Na[Nb(O2)3]•2H2O as a New Molecular Precursor for Synthesis of Sodium Niobate
Water Soluble Na[Nb(O2)3]•2H2O as a New Molecular Precursor for Synthesis of Sodium Niobate
复制标题
DOI：
10.2109/jcersj2.115.808
复制
发表时间：
2007
影响因子：
1.1
通讯作者：
D. Dey;V. Petrykin;S. Sasaki;M. Kakihana
中科院分区：
文献类型：
--
作者：
D. Dey;V. Petrykin;S. Sasaki;M. Kakihana
在pH =11的氨水溶液中，铌酸与H2 O2反应，合成了水溶性四过氧铌酸盐[Nb（O2）4 ] 3-。相应的铵盐，（NH 4）3 [Nb（O2）4 ]，作为一个单一的晶体生长，并解决其晶体结构。从含（NH 4）3 [Nb（O2）4 ]和Na 2CO 3的溶液中得到白色沉淀.通过元素分析、热重分析、氧化还原滴定和拉曼光谱分析，确定所合成的化合物为Na[Nb（O2）3 ] ·2 H2O。该化合物已被证明是一种方便的前体，用于在空气中在400-500°C的还原温度下通过简单的煅烧合成NaNbO 3。
A water-soluble tetraperoxo niobate [Nb (O 2 ) 4 ] 3- was prepared by reaction of niobic acid with H 2 O 2 at pH =11 in aqueous ammonia solution. The corresponding ammonium salt, (NH 4 ) 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 (NH 4 ) 3 [Nb(O 2 ) 4 ] and Na 2 CO 3 . Based on the elemental, TG, redox titration and Raman spectroscopic analyses, we have concluded that the obtained compound was Na[Nb (O 2 ) 3 ] ·2H 2 O. This compound has been demonstrated to be a convenient precursor for synthesis of NaNbO 3 by simple calcinations in air at the reduced temperature of 400-500°C.