Reaction mechanisms of strontium ferrites synthesis

被引：10

作者：

Saleh, HI ^{[1
]}

机构：

[1] Natl Res Ctr, Dept Inorgan Chem, Cairo 12311, Egypt

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2002年 / 49卷 / 03期

关键词：

strontium nitrate; iron nitrate; interaction at different temperatures; different valences of strontium ferrites synthesis;

D O I：

10.1002/jccs.200200053

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reactions between strontium and iron nitrates have been studied in an open atmosphere system using three different molar ratios, 1: 1 (1)5 1:2 (11) and 2:1 (111) at different temperatures as pointed out from the DTA data. The reaction mechanism was discussed based on the chemical composition characterized by means of thermal analysis, X-ray diffraction patterns, infrared spectra and magnetic susceptibility. It was found that the reaction products depend on both temperature of reaction and the ratio between reactants. The reaction products were found to be composed of a variety of iron compounds that possess different valences: SrFeO2 (86), SrFeO2 (97), SrFe2O4, SrFe12O19, Sr2Fe2O5 and Sr7Fe10O22 in addition to some accessory reaction products namely alpha-Fe2O3 and FeO(OH).

引用

页码：341 / 348

页数：8

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