CHLORINATION KINETICS OF SILICON DIOXIDE IN THE PRESENCE OF CARBON

被引：11

作者：

CHEN, JM

CHANG, FW

CHANG, CY

机构：

[1] NATL CENT UNIV,DEPT CHEM ENGN,CHUNGLI 32054,TAIWAN

[2] NATL TAIWAN UNIV,GRAD INST ENVIRONM,TAIPEI 10764,TAIWAN

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 05期

关键词：

D O I：

10.1021/ie00101a011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The chlorination of silicon dioxide / carbon pellet was investigated by a thermal gravimetric analysis (TGA) reaction system over the temperature range 1123-1323 K. The effect of gas flow rate, pellet size, pellet forming pressure, C/SiO2molar ratio, and initial grain sizes on the extent of chlorination was determined experimentally. The total porosity of the pellets was found to be slightly increased, when the reaction proceeded. The rate expressions of the chlorination of silicon dioxide/carbon pellet in the chemical-reaction-controlled region were presented. The chlorine reaction order was found to be 0.62, with an activation energy of 114.7 kJ/mol. A kinetic model was developed, and it gave good agreement with the experimental results. © 1990, American Chemical Society. All rights reserved.

引用

页码：778 / 783

页数：6

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