OXIDATION OF CR(III) TO CR(VI) SPECIES DURING THE THERMAL-DECOMPOSITION PROCESS OF ZN/CR-LAYERED DOUBLE HYDROXIDE CARBONATE

被引：24

作者：

FUDA, K

SUDA, K

MATSUNAGA, T

机构：

来源：

CHEMISTRY LETTERS | 1993年 / 09期

关键词：

D O I：

10.1246/cl.1993.1479

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The intermediates obtained from thermal decomposition of Zn/Cr-layered double hydroxide carbonates (Zn/Cr-LDH; Zn0.66Cr0.34(OH)2(CO3)0.170.57H2O) were studied by XRD, TPD, FT-IR, ESCA and chemical analyses. It was found that Cr(III) ions embedded originally in the hydroxide layers were oxidized to Cr(VI) species in the temperature range between 473 and 773 K where the layer structure was lost, and reduced again to Cr(III) in the spinel phase over 773 K.

引用

页码：1479 / 1482

页数：4

共 5 条

[1] STUDIES OF ZINC-CHROMIUM HYDROXY SALTS .1. THERMAL-DECOMPOSITION OF [ZN2CR(OH)6]X-NH2O, WHERE X-=F-,CL-,BR-,L-, 1/2CO3/2-) AND NO3- [J].