Kinetics of the Homogeneous Gas Phase Hydrolysis of CCl3COCl,CCl2HCOCl,CH2CICOCl and COCl2 |
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Authors: | R Butler A Snelson |
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Institution: | IIT Research Institute , Chicago , Illinois |
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Abstract: | The homogeneous gas phase hydrolysis kinetics of the above compounds has been investigated in the 470° to 620°K temperature range. The following biomolecular rate constants were obtained: k(CCl3COCl) = 2.54 × 106 exp (?18,350 ± 1750)/RT, k(CClH2COCl) = 1.14 × 108 exp (?22,630 ± 780)/RT, and fr(COCl2) = 9192 exp (?14,200 ± 2100)/RT liter mole?1 sec?1. Experimental difficulties prevented data being obtained for CHCl2COCl. The half lives of these species with respect to homogeneous gas phase hydrolysis in the atmosphere have been estimated and it is concluded that this is not an efficient conversion process. Heterogeneous hydrolysis by water droplets may be a more efficient atmospheric scavenging process for these compounds. |
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