Kinetics of chlorination and carbochlorination of lead sulfate

被引：6

作者：

Menad, N

Kanari, N

Gaballah, I

机构：

[1] LEM, Mineral Proc & Environm Engn Team, F-54501 Vandoeuvre Nancy, France

[2] Lulea Univ Technol, S-97187 Lulea, Sweden

[3] CNRS, URA 235, Mineral Proc & Environm Engn Team, F-75794 Paris, France

[4] ENSG, Mineral Proc & Environm Engn Team, F-54501 Vandoeuvre Nancy, France

[5] Inst Natl Polytech Lorraine, Mineral Proc & Environm Engn Team, F-54501 Vandoeuvre Nancy, France

来源：

THERMOCHIMICA ACTA | 1997年 / 306卷 / 1-2期

关键词：

kinetics; chlorination; carbochlorination; lead sulfate; thermogravimetric measurements;

D O I：

10.1016/S0040-6031(97)00302-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The kinetics of chlorination and carbochlorination of PbSO4 with Cl-2 + N-2 and Cl-2 + CO + N-2 gas mixtures has been studied using thermogravimetric measurements in the range 700-900 degrees C. The chlorination reaction rate of PbSO4 with Cl-2 + N-2 increases with rise in the chlorine content in the gas mixture. The reaction order is about 0.66 with respect to chlorine. The chlorination rate of PbSO4 is controlled by a chemical reaction mechanism with an apparent activation energy of about 174 kJ/mol. In the same temperature range, the apparent activation energy of the carbochlorination of lead sulfate by Cl-2 + CO + N-2 gas mixture is about 114 kJ/mol. The reaction order is about 0.72 with respect to Cl-2 + CO. The maximum reaction rate is obtained by using a carbochlorinating gas mixture having a Cl-2/(Cl-2 + CO) ratio equal to about 0.6. (C) 1997 Elsevier Science B.V.

引用

页码：61 / 67

页数：7