Synthesis of lower valent molybdenum oxides by an ambient temperature reduction of aqueous K2MoO4 by KBH4

被引：52

作者：

Tsang, C ^{[1
]}

Dananjay, A ^{[1
]}

Kim, J ^{[1
]}

Manthiram, A ^{[1
]}

机构：

[1] UNIV TEXAS,CTR MAT SCI & ENGN,ETC 9104,AUSTIN,TX 78712

来源：

INORGANIC CHEMISTRY | 1996年 / 35卷 / 02期

关键词：

D O I：

10.1021/ic950955w

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reduction of aqueous K2MoO4 with aqueous KBH4 at ambient temperatures has been investigated systematically to obtain lower valent molybdenum oxides. Several lower valent oxides such as MoO2, Mo4O11, K0.26MoO3 (red bronze), K0.30MoO3 (blue bronze), and K0.85Mo6O17 are formed during the reduction process; however, only MoO2 has been obtained as single-phase product. The nature of the product formed is strongly influenced by the reducing power of KBH4. The reducing power increases with decreasing pH or increasing concentration and volume of KBH4. The as-prepared samples are amorphous as revealed by X-ray diffraction and transmission electron microscopy. They crystallize sharply at around 350-500 degrees C as revealed by differential scanning calorimetry. Since the products formed are amorphous in nature, they may become particularly attractive for battery electrodes and catalysis.

引用

页码：504 / 509

页数：6

共 19 条

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