Kinetics of thermal transformations of precipitated magnetite and goethite

被引：36

作者：

Przepiera, K ^{[1
]}

Przepiera, A ^{[1
]}

机构：

[1] Tech Univ Szczecin, Inst Chem & Environm Protect, PL-71065 Szczecin, Poland

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2001年 / 65卷 / 02期

关键词：

kinetics of iron oxides transformation; thermal analysis of iron oxides;

D O I：

10.1023/A:1012441421955

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The aim of the present study was to determine the kinetic equations for the thermal transformations of precipitated iron oxides and hydroxides, namely for the process of thermal dehydroxylation of goethite and consecutive of hematite crystal structure growth as well as for the oxidation of magnetite to maghemite and its thermal transformation into crystalline hematite. The investigations have been carried out using thermogravimetry (TG/DTG/DTA), X-ray powder diffractometry (XRD) and high temperature powder diffractometry (HT-XRD). This presentation contains the continuation of our earlier works.

引用

页码：497 / 503

页数：7