| Title |
A Study on Kinetics of Chlorination of Tungstentrioxide |
| Authors |
서동희(D . H . Seo); 권호영(H . Y . Kwon); 원창환(C . W . Won); 조통래(T . 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. |