A RAPID METHOD TO PREPARE CRYSTALLINE FINE PARTICLE CHROMITE POWDERS

被引：29

作者：

CHANDRAN, RG

PATIL, KC

机构：

[1] Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore

来源：

MATERIALS LETTERS | 1992年 / 12卷 / 06期

关键词：

D O I：

10.1016/0167-577X(92)90209-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fine particle MgCr2O4, ZnCr2O4 and LaCrO3 have been obtained by rapidly heating an aqueous solution containing the corresponding metal (M) nitrate, chromium nitrate and maleic hydrazide in appropriate mole ratios at 375-degrees-C. The solution boils, froths and ignites to burn with a flame and yields voluminous chromite powders. Formation of spinel chromites, MCr2O4, and perovskite LaCrO3 was confirmed by their characteristic powder X-ray diffraction patterns and infrared spectra. The surface area of the chromites ranged from 32 to 72 m2/g.

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页码：437 / 441

页数：5

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