THERMAL DECOMPOSITION OF SOME ORGANIC COMPOUNDS IN THE PRESENCE OF DEUTERIUM (in Russian)
Studies are made of hydrogen break-off by methyl radicals formed in acetaldehyde, acetone, dimethyl mercury, and di-test-butyl peroxide pyrolisis with D/sub 2/. Distributions of deuteromethanes plotted as functions of temperature show that at 500 to 600 deg C the extent of the reaction does not exceed 0.01 to 5%. Moreover, the methane consists exclusively of CH/sub 3/D and CH/sub 4/ molecules. Their ratio at the above temperature does not depend on pressure or contact time, indicating the absence of secondary processes. At temperatures exceeding 600 deg C, the extent of the reaction is 10 to 30%, forming poly-replaced methanes up to CD/sub 4/. The latter is produced by secondary processes induced by increased concentrations of deuterium. The data indicate that elemertary reaction rate constants determined by comparing the reaction rates of R + R/sub 1/H - RH + R and R + D/sub 2/ - RD + D are complicated by secondary processes when the temperature exceeds 500 to 550 deg C. This suggests that the mechanism of thermal radical exchange with molecular deuterium at temperatures over 600 deg C does not take place as poly-replaced molecules but as the result of secondary replacement processes. (R.V.J.)
- Research Organization:
- Moscow State Univ.
- NSA Number:
- NSA-15-016884
- OSTI ID:
- 4025393
- Journal Information:
- Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 136
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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