Abstract
THE kinetics of the pyrolysis of 1.2 dichlorethane have recently been described by Barton and Howlett1. Over the temperature-range 360°–480° C. they find that the reaction is first order and proceeds by a radical chain-mechanism in vessels coated with a carbonaceous film (k = 1010.81 exp − 47,000/RT). Strong evidence for the radical nature of the decomposition is provided by the powerful inhibiting effect of propylene. The maximally inhibited rate, which is independent of further increase in propylene concentration, is shown to be partially heterogeneous in character.
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Barton, D. H. R., and Howlett, K. E., J. Chem. Soc., 155 (1949).
Baldt, R., and Cremer, E., Monatsh., 80, 153 (1949).
Biltz, H., and Kuppers, E., Ber., 37, 2398 (1904). Barton, D. H. R., J. Chem. Soc., 148 (1949). Howlett, K. E., Ph.D. thesis, London (1948).
Compare Barton, D. H. R., and Onyon, P. F., Trans. Farad. Soc., 45, 725 (1949).
Barton, D. H. R., Onyon, P. F., and Howlett, K. E., Trans. Farad Soc., 45, 733 (1949).
Private communication from Dr. D. H. R. Barton.
Fugassi, P., and Daniels, F., J. Amer. Chem. Soc., 60, 771 (1938).
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HOWLETT, K. Pyrolysis of 1.2 Dichlorethane. Nature 165, 860 (1950). https://doi.org/10.1038/165860a0
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DOI: https://doi.org/10.1038/165860a0
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