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HWAHAK KONGHAK,
Vol.39, No.4, 481-487, 2001
Vol.39, No.4, 481-487, 2001
1,2-Dichloroethane의 열분해 반응속도 및 메카니즘 연구
Kinetics and Mechanisms of Pyrolysis of the 1,2-Dichloroethane
1,2-Dichloroethane의 열분해 반응속도식을 구하고 생성물질의 반응경로를 규명하기 위하여 관형반응기를 사용하여 반응온도를 300 ~ 600 ℃로 변화시키면서 열분해 반응연구를 수행하였다. 400 ℃이상에서 열분해 반응이 현저하게 나타나기 시작했으며, 600 ℃에서는 열분해전환율이 99.9%에 이르는 것으로 나타났다. 주생성물은 VCM(Vinyl Chloride Monomer)이며, cis-dichloroethene, trans-dichloroethene, 1,1-dichloroethene 및 chloroprene이 부생성물로서 검출되었다. 실험결과로부터 얻어진 반응물과 생성물의 분포 및 Cl 라디칼에 의한 H abstraction 이론에 근거하여 반응 네트워크를 구성하였다. 또한, 기본 반응 모델링을 통하여 kinetics를 도출하였으며, 이를 실험결과와 비교한 결과 정량적으로 일치하였다.
Pyrolysis reaction kinetics and mechanisms of chlorinated hydrocarbons were investigated. 1,2-Dichloroethane was selected as a model compound. The experiment was performed at the temperature ranges of 300-600 ℃ in a tubular reac-tor. Pyrolysis of 1,2-dichloroethane occurred at the temperature greater than 400 ℃ and 1,2-dichloroethane was totally decom-posed
at 600 ℃. VCM was detected as a major product, while cis-dichloroethene, trans-dichloroethene, 1,1-dichloroethene and chloroprene were formed as byproducts. A kinetic network was formulated based on the elementary kinetics theory of H abstraction by Cl radical. In addition, pyrolysis kinetics of the 1,2-dichloroethane were proposed and the calculated results were compared with the experimental results.
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