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Title: Rate constants for the reaction, O + H sub 2 O yields OH + OH, over the temperature range, 1500--2400 K, by the flash photolysis-shock tube technique: A further consideration of the back reaction

Abstract

Rate constants for the reaction, O + H{sub 2}O {yields} OH + OH, have been measured by the Flash Photolysis-Shock Tube (FP-ST) technique over the temperature range, 1500--2400 K. This technique combines stock heating with flash photolysis in the reflected shock wave regime, and the transient species, O-atoms in this case, are monitored by atomic resonance absorption spectroscopy (aras). Additional experiments were performed with N{sub 2}O as a thermal source of O-atoms, and the formation and depletion of (O) were followed by the aras technique. These results require that the decomposition rate behavior of N{sub 2}O be known. The results obtained by this technique are compared to those obtained by the FP-ST technique and are found to be corroborative. Hence, the combined results are used to describe the rate constants for the title reaction. The experimental results are compared to earlier work, and rate constants for the title reaction are additionally calculated from published results for the reverse reaction, OH + OH, and the well known equilibrium constant. All results are combined, and the rate behavior for the title reaction is evaluated. Lastly, the results for both forward and reverse reactions are compared to the theoretical calculations presented recently bymore » Harding and Wagner. It is concluded that theory and experiment are in agreement within experimental error.« less

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
6963256
Report Number(s):
CONF-900704-10
ON: DE90010500
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 23. Combustion Institute symposium on combustion, Orleans (France), 22-27 Jul 1990
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; OXYGEN; CHEMICAL REACTION KINETICS; WATER; ABSORPTION SPECTROSCOPY; PHOTOLYSIS; SHOCK TUBES; VERY HIGH TEMPERATURE; CHEMICAL REACTIONS; DECOMPOSITION; ELEMENTS; HYDROGEN COMPOUNDS; KINETICS; NONMETALS; OXYGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; REACTION KINETICS; SPECTROSCOPY; 400102* - Chemical & Spectral Procedures

Citation Formats

Lifshitz, A., and Michael, J.V.. Rate constants for the reaction, O + H sub 2 O yields OH + OH, over the temperature range, 1500--2400 K, by the flash photolysis-shock tube technique: A further consideration of the back reaction. United States: N. p., 1990. Web.
Lifshitz, A., & Michael, J.V.. Rate constants for the reaction, O + H sub 2 O yields OH + OH, over the temperature range, 1500--2400 K, by the flash photolysis-shock tube technique: A further consideration of the back reaction. United States.
Lifshitz, A., and Michael, J.V.. Mon . "Rate constants for the reaction, O + H sub 2 O yields OH + OH, over the temperature range, 1500--2400 K, by the flash photolysis-shock tube technique: A further consideration of the back reaction". United States. doi:.
@article{osti_6963256,
title = {Rate constants for the reaction, O + H sub 2 O yields OH + OH, over the temperature range, 1500--2400 K, by the flash photolysis-shock tube technique: A further consideration of the back reaction},
author = {Lifshitz, A. and Michael, J.V.},
abstractNote = {Rate constants for the reaction, O + H{sub 2}O {yields} OH + OH, have been measured by the Flash Photolysis-Shock Tube (FP-ST) technique over the temperature range, 1500--2400 K. This technique combines stock heating with flash photolysis in the reflected shock wave regime, and the transient species, O-atoms in this case, are monitored by atomic resonance absorption spectroscopy (aras). Additional experiments were performed with N{sub 2}O as a thermal source of O-atoms, and the formation and depletion of (O) were followed by the aras technique. These results require that the decomposition rate behavior of N{sub 2}O be known. The results obtained by this technique are compared to those obtained by the FP-ST technique and are found to be corroborative. Hence, the combined results are used to describe the rate constants for the title reaction. The experimental results are compared to earlier work, and rate constants for the title reaction are additionally calculated from published results for the reverse reaction, OH + OH, and the well known equilibrium constant. All results are combined, and the rate behavior for the title reaction is evaluated. Lastly, the results for both forward and reverse reactions are compared to the theoretical calculations presented recently by Harding and Wagner. It is concluded that theory and experiment are in agreement within experimental error.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}

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