Shock tube study of the rate constants for H + O2+ M → HO2+ M (M = Ar, H2O, CO2, N2) at elevated pressures

Jiankun Shao; Rishav Choudhary; Adam Susa; David F. Davidson; Ronald K. Hanson

doi:10.1016/j.proci.2018.05.077

Shock tube study of the rate constants for H + O₂+ M → HO₂+ M (M = Ar, H₂O, CO₂, N₂) at elevated pressures

Jiankun Shao^*, Rishav Choudhary, Adam Susa, David F. Davidson, Ronald K. Hanson

^*Corresponding author for this work

Stanford University

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

The rate constants for the reaction H + O₂+ M→HO₂+ M were investigated at elevated pressures from 12 to 33 atm using ignition delay time (IDT) measurements behind reflected shock waves in H₂/O₂/M mixtures with different collision partners M = Ar, H₂O, N₂ and CO₂. The temperature and pressure ranges where the rate constants of the reactions H + O₂+ M→HO₂+ M and H + O₂- > OH + O dominate the IDT sensitivity were selected as optimum test conditions using the detailed H₂/O₂ mechanism of Hong et al. (2011). The current study thus provides a quantitative and relatively direct method for determining the rate constants for H + O₂+ M→HO₂+ M using simple IDT measurements. The rate constants found are consistent with earlier studies, but with reduced uncertainties.

Original language	English
Pages (from-to)	145-152
Number of pages	8
Journal	Proceedings of the Combustion Institute
Volume	37
Issue number	1
DOIs	https://doi.org/10.1016/j.proci.2018.05.077
Publication status	Published - 2019
Externally published	Yes

Keywords

High pressure
Ignition delay time hydroperoxyl radical rate constant
Shock tube

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title = "Shock tube study of the rate constants for H + O2+ M → HO2+ M (M = Ar, H2O, CO2, N2) at elevated pressures",

abstract = "The rate constants for the reaction H + O2+ M→HO2+ M were investigated at elevated pressures from 12 to 33 atm using ignition delay time (IDT) measurements behind reflected shock waves in H2/O2/M mixtures with different collision partners M = Ar, H2O, N2 and CO2. The temperature and pressure ranges where the rate constants of the reactions H + O2+ M→HO2+ M and H + O2- > OH + O dominate the IDT sensitivity were selected as optimum test conditions using the detailed H2/O2 mechanism of Hong et al. (2011). The current study thus provides a quantitative and relatively direct method for determining the rate constants for H + O2+ M→HO2+ M using simple IDT measurements. The rate constants found are consistent with earlier studies, but with reduced uncertainties.",

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author = "Jiankun Shao and Rishav Choudhary and Adam Susa and Davidson, {David F.} and Hanson, {Ronald K.}",

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doi = "10.1016/j.proci.2018.05.077",

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AU - Shao, Jiankun

AU - Choudhary, Rishav

AU - Susa, Adam

AU - Davidson, David F.

AU - Hanson, Ronald K.

PY - 2019

Y1 - 2019

N2 - The rate constants for the reaction H + O2+ M→HO2+ M were investigated at elevated pressures from 12 to 33 atm using ignition delay time (IDT) measurements behind reflected shock waves in H2/O2/M mixtures with different collision partners M = Ar, H2O, N2 and CO2. The temperature and pressure ranges where the rate constants of the reactions H + O2+ M→HO2+ M and H + O2- > OH + O dominate the IDT sensitivity were selected as optimum test conditions using the detailed H2/O2 mechanism of Hong et al. (2011). The current study thus provides a quantitative and relatively direct method for determining the rate constants for H + O2+ M→HO2+ M using simple IDT measurements. The rate constants found are consistent with earlier studies, but with reduced uncertainties.

AB - The rate constants for the reaction H + O2+ M→HO2+ M were investigated at elevated pressures from 12 to 33 atm using ignition delay time (IDT) measurements behind reflected shock waves in H2/O2/M mixtures with different collision partners M = Ar, H2O, N2 and CO2. The temperature and pressure ranges where the rate constants of the reactions H + O2+ M→HO2+ M and H + O2- > OH + O dominate the IDT sensitivity were selected as optimum test conditions using the detailed H2/O2 mechanism of Hong et al. (2011). The current study thus provides a quantitative and relatively direct method for determining the rate constants for H + O2+ M→HO2+ M using simple IDT measurements. The rate constants found are consistent with earlier studies, but with reduced uncertainties.

KW - High pressure

KW - Ignition delay time hydroperoxyl radical rate constant

KW - Shock tube

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Shock tube study of the rate constants for H + O₂+ M → HO₂+ M (M = Ar, H₂O, CO₂, N₂) at elevated pressures

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Keywords

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