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KMID : 1024519960050050569
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Journal of the Environmental Sciences
1996 Volume.5 No. 5 p.569 ~ p.577
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Thermal Degradation Characteristics of Carbon Tetrachloride in Excess Hydrogen Atmosphere
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Won Yang-Soo
Jun Kwan-Soo
Choi Seong-Pil
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Abstract
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pure compound chloromethanes; methyl chloride, methylene chloride, chloroform and The carbon tetrachloride were used as a model of chlorocarbon system with Cl/H ratio to investigate thermal stability and hydrodechlorination process of carbon tetrachloride under excess hydrogen atmosphere. The parent thermal stability on basis of temperature required for 99% destruction at 1 second no was evaluated as for , for , for and for . Chloroform was thermally less stable than at fairly low temperatures $(<570^{\circ}C).$ The lion of became more sensitive to increasing temperature, and was degraded CHCl3 at above The number and quantity of chlorinated products decreases with increasing temperature for the Product distribution of decomposition reaction system. Formation of non-chlorinated hydrocarbons such as , and increased as the temperature rise and particularly small amount of methyl chloride was observed above in / reaction system. The less chlorinated products are more stable, with methyl chloride the most stable chlorocarbon in this reaction system.
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KEYWORD
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Chloromethanes, Methyl chloride, Methylene chloride, Chloroform, Carbon tetrachloride, Thermal degradation, Pyrolysis, Excess hydrogen atmosphere, Thermal stability, Hydrodechlorination
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