발간논문

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Vol.26, No.2, 89 ~ 96, 1988
Title
A Study on Kinetics of Chlorination of Tungstentrioxide
서동희D . H . Seo, 권호영H . Y . Kwon, 원창환C . W . Won, 조통래T . R . Cho
Abstract
Chlorination behaviours of tungsten oxide (WO₃) were investigated by means of a thermogravimetric analysis. The rate of chlorination was increased with increasing the mixed ratio of carbon as a reducing agent. the flow. rate of chlorine gas, reaction temperature, and the amount of calcium fluoride as an additive. It was found that experimental results fit well Valensi equation, 1-2/3R-(1-R)^(2/3) = Kt and the rate of chlorination is controlled by a diffusion process, the activation energy of which is 26.0 KJ/mole. Discussion of the chlorination mechanism is also given in the text.
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