✦ LIBER ✦

The kinetics and the mechanism of the thermal gas-phase reaction between NO2 and 1,1-dichlorodifluoroethylene, CF2CCl2

✍ Scribed by J. Czarnowski; H. J. Schumacher

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 452 KB
Volume: 18
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550180810

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✦ Synopsis

The kinetics of the gas phase reaction between NOz and CFzCCIz has been investigated in the temperature range from 50 to 80°C. The reaction is homogeneous. Three prod-

and equimolecular amounts of ClNO and of OZNCFZC(O)CI. The rate of consumption of the reactants is independent of the total pressure, the reaction products, and added inert gases and can be represented by a second-order reaction:

However, the distribution of the products is influenced by the pressure of the present gases, which favor the formation of the dinitro-compound in a specific way. The effect of CFzCClz is the greatest. In the absence of added gases, the ratio of O2NCFzCClzNOZ to that of OzNCFzC(0)C1 is proportional to (CF2CCl2 + y p products).

The experimental results can be explained by the following mechanism:

(1)

P and X represent the products and the added gases: kl = 3.16 % 0.5 X 106exp(-10500 2 1000 cal/RT) M-' s

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