Kinetics of hematite chlorination with Cl2 and Cl2 + O2. Part II. Chlorination with Cl2 + O2

被引：8

作者：

Kanari, N. ^{[1
]}

Mishra, D. ^{[1
]}

Filippov, L. ^{[1
]}

Diot, F. ^{[1
]}

Mochon, J. ^{[2
]}

Allain, E. ^{[1
]}

机构：

[1] Nancy Univ, CNRS, UMR 7569, Lab Environm & Mineralurgie,ENSG, F-54501 Vandoeuvre Les Nancy, France

[2] CSIC, CENIM, E-28040 Madrid, Spain

来源：

THERMOCHIMICA ACTA | 2010年 / 506卷 / 1-2期

关键词：

Hematite; Thermogravimetric analysis; Chlorination; Cl-2 + O-2; Kinetics; OXYCHLORINATION;

D O I：

10.1016/j.tca.2010.04.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The kinetics of chlorination of hematite by Cl-2 +O-2 have been investigated in the temperature range from 600 to 1025 degrees C by using thermogravimetric analysis (TGA). The effects of Cl-2/O-2 ratio, gas velocity, temperature and partial pressure of reactive gases on the reaction rate were determined. The reaction rate of Fe2O3 chlorination increased steadily with Cl-2/O-2 ratio reaching the maximum for the chlorination in absence of oxygen. The hematite chlorination process by Cl-2 + O-2 was characterized by an apparent activation energy of about 148 kJ/mol in the whole temperature range studied. The apparent reaction orders with respect to Cl-2 + O-2, Cl-2 and O-2 at 750 degrees C were about 0.71, 1.44, and -0.61, respectively. Almost the same values of reaction orders were obtained at 950 degrees C. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：34 / 40

页数：7

共 11 条

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