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The Thermal Decomposition of Water by N. K. Srinivasan; J. V. Michael is a Chemistry article available to read on EtoBox.

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## Abstract The reflected shock tube technique with multipass absorption spectrometric detection of OH‐radicals at 308 nm, corresponding to a total path length of 1.749 m, has been used to study the reaction H~2~O + M → H + OH + M between 2196 and 2792 K using 0.3, 0.5, and 1% H~2~O, diluted in Kr. As a result of the increased sensitivity for OH‐radical detection, the existing database for this reaction could be extended downward by ∼500 K. Combining the present work with that of Homer and Hurle, the composite rate expression for water dissociation in either Ar or Kr bath gas is __k__~1,Ar(or Kr)~ = (2.43 ± 0.57) × 10^−10^ exp(−47117 ± 633 __K__/__T__) cm^3^ molecule^−1^ s^−1^ over the __T__‐range of 2196–3290 K. Applying the Troe factorization method to data for both forward and reverse reactions, the rate behavior could be expressed to within <±18% over the __T__‐range, 300–3400 K, by the three‐parameter expression __k__~1,Ar~ = 1.007 × 10^4^ __T__^−3.322^ exp(−60782 __K__/__T__) cm^3^ molecule^−1^ s^−1^ A large enhancement due to H~2~O with H~2~O collisional activation has been noted previously, and both absolute and relative data have been considered allowing us to suggest __k

Who reads The Thermal Decomposition of Water?

Author

N. K. Srinivasan; J. V. Michael

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0538-8066)

Published

2006

Language

EN

Field

Chemistry (Physical Sciences)