Synthesis of AFeO2.5+x(0≤x≤0.5; A = Sr, Ca) mixed oxides from the oxidative thermal decomposition of A[Fe(CN)5NO]•4H2O

被引：19

作者：

Gómez, MI

de Morán, JA

Carbonio, RE

Aymonino, PJ

机构：

[1] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Quim Fis, INFIQC, RA-5000 Cordoba, Argentina

[2] Univ Nacl Tucuman, Fac Bioquim Quim & Farm, Inst Quim Inorgan, RA-4000 San Miguel De Tucuman, Tucuman, Argentina

[3] Natl Univ La Plata, Fac Ciencias Exactas, Dept Quim, CEQUINOR,CONICET,UNLP, RA-1900 La Plata, Argentina

[4] Natl Univ La Plata, Fac Ciencias Exactas, Dept Quim, LANAIS EFO,CONICET,UNLP, RA-1900 La Plata, Argentina

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1999年 / 142卷 / 01期

关键词：

D O I：

10.1006/jssc.1998.8002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The ion-temperature formation of Sr and Ca ferrates by thermal oxidative decomposition of tetrahydrates of Sr and Ca nitroprussides (pentacyanonitrosilferrates(II)) is reported. IR spectroscopy, X-ray diffraction (including Rietveld analysis), and thermal analysis were used to follow the process. The amount of active oxygen (concentration of Fe(IV)) in the products was chemically determined. For the Sr compound, the final product was an oxygen-deficient perovskite that could be produced with a very low content of carbonate in the temperature range 750-850 degrees C. For the calcium compound, only Ca2Fe2O5 with the brownmillerite type structure was obtained. (C) 1999 Academic Press.

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页码：138 / 145

页数：8

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