Effect of adsorbed polyaniline on the thermal stability of iron and arsenic oxides

被引：4

作者：

de Farias, RF ^{[1
]}

机构：

[1] Univ Fed Roraima, UFRR, Dept Quim, BR-69310270 Boa Vista, RO, Brazil

来源：

QUIMICA NOVA | 2000年 / 23卷 / 03期

关键词：

polyaniline; thermal degradation; oxide;

D O I：

10.1590/S0100-40422000000300006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Iron and arsenic oxide grains are coated with the conducting organic polymer polyaniline. The obtained samples mere characterized by infrared spectroscopy, SEM, conducting measurements and thermogravimetry. The thermal stability of both oxides are increased. For As2O3 the sublimation temperature is increased from 165 degrees C in the pure oxide to 206 degrees C in the polymer modified sample. The pure Fe3O4 sample exhibits sublimation at 780 degrees C whereas the polyaniline coated oxide is stable until at least 1000 degrees C.

引用

页码：313 / 315

页数：3

共 34 条

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