화학공학소재연구정보센터
HWAHAK KONGHAK, Vol.38, No.6, 900-906, December, 2000
1,1,2-Trichloroethane의 열분해 반응속도 및 메카니즘 연구
Pyrolysis Kinetics and Mechanism of the 1,1,2-Trichloroethane
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초록
1,1,2-Trichloroethane의 열분해 반응속도식과 생성물질의 반응경로를 규명하기 위하여 온도범위를 300-600℃로 변화시키면서 관형반응기를 사용하여 열분해 반응연구를 수행하였다. 400℃이상에서 열분해 반응이 현저하게 나타났으며, 600℃에서는 완전히 열분해되는 것으로 나타났다. 주생성물은 cis-dichloroethene, trans-dichloroethene, 1,1-dichloroethene순으로 높게 나타났으며, 부생성물로서 vinyl chloride, trichloroethene이 검출되었다. 실험결과로부터 얻어진 반응물과 생성물의 분포 및 Cl 라디칼에 의한 H abstraction 이론에 근거하여 반응네트워크를 구성하였다. 또한, pseudo-steady state 가정을 통하여 kinetics를 도출하였으며, 이를 실험결과와 비교하여, 적정성을 검토하였다.
Pyrolysis reaction kinetics and mechanism of chlorinated hydrocarbons were investigated. As a model, 1,1,2- trichloroethane was selected. The experiment was performed at the temperature ranges of 300-600 ℃ in a tubular reactor. Pyrolysis of 1,1,2-trichloroethane occurred at the temperature greater than 400 ℃ and totally decomposed at 600 ℃. Cis-dichloroethene, trans-dichloroethene, and 1,1-dichloroethene were detected as major products, while vinyl chloride and trichloroethene were formed as byproducts. A kinetics network was formulated, based on the elementary kinetics theory of H abstraction by Cl radical. In addition, pyrolysis kinetics of the 1,1,2-trichloroethane were proposed and the calculation results were compared with the experimental results.
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