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- W2012511356 abstract "The thermal dissociation of H2O2 and N2H4, highly diluted with argon, has been investigated in shock waves. For N2H4 the complete fall-off curve from the low pressure to the high pressure region could be studied. Experiments at about [Ar]=3×10−6 mole/cm3 yielded a limiting low pressure rate constant of k1 0=1015.6 exp [−(41 kcal/mole)/RT] [cm3/mole sec] at 1280°≤T≤1580°K; experiments at about [Ar]=2×10−3 mole/cm3 yielded a limiting high pressure rate constant of k1 ∞=1013.9 exp [−(55 kcal/mole)/RT] [sec−1] at 1110°≤T≤1400°K. The unimolecular dissociation of H2O2 near the low pressure limit was investigated by an ultraviolet absorption technique, which gave k4 0=1016.5 exp [−(43 kcal/mole)/RT] [cm3/mole sec] between 950° and 1450°K. Experiments at 20 atm indicated the beginning of the fall-off region. In addition to H2O2, light absorption, corresponding to a species which forms and is consumed again during the reaction, was observed around 2300 . The origin of this absorption, possibly due to HO2, is discussed. For both decomposition reactions, the role of the corresponding consecutive reactions has been investigated. The rate constants of the unimolecular reactions are interpreted in terms of theories of unimolecular reactions and are compared. Nonequilibrium, theories are applied to the low pressure constants; different activated complexes are considered for the high pressure constants." @default.
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- W2012511356 date "1969-01-01" @default.
- W2012511356 modified "2023-10-11" @default.
- W2012511356 title "Investigation of N2H4 and H2O2 decomposition in low and high pressure shock waves" @default.
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- W2012511356 doi "https://doi.org/10.1016/s0082-0784(69)80417-0" @default.
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