1,1,2-Trichloroethane의 열분해 반응속도 및 메카니즘 연구

송보현; 최영헌; 최병헉; 박영근; 문정우; 이종협; Bo-Hyun Song; Young Heon Choi; Byung-Seok Choi; Young-Guen Park; Jungwoo Moon; Jongheop Yi

HWAHAK KONGHAK, Vol.38, No.6, 900-906, December, 2000

Export Citation

1,1,2-Trichloroethane의 열분해 반응속도 및 메카니즘 연구

Pyrolysis Kinetics and Mechanism of the 1,1,2-Trichloroethane

송보현, 최영헌, 최병헉, 박영근, 문정우, 이종협 ^†

서울대학교 응용화학부

Bo-Hyun Song, Young Heon Choi, Byung-Seok Choi, Young-Guen Park, Jungwoo Moon, and Jongheop Yi^†

School of Chemical Engineering, Seoul National University, Korea

E-mail:

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.

Keywords:1,1,2-Trichloroethane;Pyrolysis;Chlorinated Hydrocarbon;Kinetics Network;Pseudo-Steady State

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Chuang SC, Bozzelli JW, Environ. Sci. Technol., 20, 568 (1986)
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[Related Articles]

[1] Pausteinbach DJ, "The Risk Assessment of Environmental and Human Health Hazerds," John Wiley & Sons, New York (1990)

[2] Won YS, J. KSEE, 15(3), 527 (1993)

[3] Chuang SC, Bozzelli JW, Environ. Sci. Technol., 20, 568 (1986)

[4] Chuang SC, Bozzelli JW, Ind. Eng. Chem. Proc. Des., 20, 317 (1986)

[5] Won YS, Lim JS, Choi SP, J. KSEE, 18(12), 1 (1996)

[6] Tsang W, Combust. Sci. Technol., 74, 99 (1990)

[7] Mason L, Unget S, U.S. EPA 600/2.79.198,NTIS PB 80-131964 (1979)

[8] Won YS, Bozzelli JW, Am. Soc. Mech. Eng. HTD, 104, 131 (1988)

[9] Tamamura S, Murakami K, Kuwazoe HJ, J. Appl. Polym. Sci., 33, 1122 (1987)

[10] Yi J, Choi BS, Lee SW, Oh JS, Yi J, HWAHAK KONGHAK, 38(2), 296 (2000)

[11] Benson SW, Int. J. Chem. Kinet., 21, 233 (1989)

[12] Fessenden RJ, "Organic Chemistry," 5(th) ed., Brooks/Cole, Pacific Grove, CA (1993)

[13] McMurry J, "Organic Chemistry," 3(rd) ed., Brooks/Cole, Pacific Grove, CA (1992)

[14] Shah JJ, Fox RO, Ind. Eng. Chem. Res., 38(11), 4200 (1999)

[15] Won YS, J. KSEE, 15(5), 527 (1993)

[16] Kerr JA, Moss SJ, "Handbook of Bimolecular and Termolecular Gas Reaction," CRC Press Inc. (1981)

[17] Sankaram BK, Selim MS, Ind. Eng. Chem. Res., 27, 1163 (1988)