Rate coefficients for reactions of OH radicals with CH3                                                 D, CH2                                                 D2                                                 , CHD3                                                 , and CD4

Louise Bøge Frederickson; Simone Thirstrup Andersen; Ole John Nielsen

doi:10.1002/kin.21262

Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄

Louise Bøge Frederickson, Simone Thirstrup Andersen, Ole John Nielsen^*

^*Corresponding author for this work

Department of Chemistry

Abstract

Fourier transform infrared (FTIR) smog chamber techniques were used to investigate the atmospheric chemistry of the isotopologues of methane. Relative rate measurements were performed to determine the kinetics of the reaction of the isotopologues of methane with OH radicals in cm ³ molecule ⁻¹ s ⁻¹ units: k(CH ₃ D + OH) = (5.19 ± 0.90) × 10 ⁻¹⁵ , k(CH ₂ D ₂ + OH) = (4.11 ± 0.74) × 10 ⁻¹⁵ , k(CHD ₃ + OH) = (2.14 ± 0.43) × 10 ⁻¹⁵ , and k(CD ₄ + OH) = (1.17 ± 0.19) × 10 ⁻¹⁵ in 700 Torr of air diluent at 296 ± 2 K. Using the determined OH rate coefficients, the atmospheric lifetimes for CH _4– _x D _x (x = 1–4) were estimated to be 6.1, 7.7, 14.8, and 27.0 years, respectively. The results are discussed in relation to previous measurements of these rate coefficients.

Original language	English
Journal	International Journal of Chemical Kinetics
Volume	51
Issue number	6
Pages (from-to)	390-394
Number of pages	5
ISSN	0538-8066
DOIs	https://doi.org/10.1002/kin.21262
Publication status	Published - 2019

Keywords

deuterated methanes
isotope effects
isotopologues
OH kinetics

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10.1002/kin.21262

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Frederickson, L. B., Andersen, S. T., & Nielsen, O. J. (2019). Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄. International Journal of Chemical Kinetics, 51(6), 390-394. https://doi.org/10.1002/kin.21262

Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄. / Frederickson, Louise Bøge; Andersen, Simone Thirstrup; Nielsen, Ole John.
In: International Journal of Chemical Kinetics, Vol. 51, No. 6, 2019, p. 390-394.

Research output: Contribution to journal › Journal article › Research › peer-review

Frederickson, LB, Andersen, ST & Nielsen, OJ 2019, 'Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄', International Journal of Chemical Kinetics, vol. 51, no. 6, pp. 390-394. https://doi.org/10.1002/kin.21262

Frederickson LB, Andersen ST, Nielsen OJ. Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄. International Journal of Chemical Kinetics. 2019;51(6):390-394. doi: 10.1002/kin.21262

Frederickson, Louise Bøge ; Andersen, Simone Thirstrup ; Nielsen, Ole John. / Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄. In: International Journal of Chemical Kinetics. 2019 ; Vol. 51, No. 6. pp. 390-394.

@article{915790c981de49e0a92ee4a475f0e1ba,

title = "Rate coefficients for reactions of OH radicals with CH3 D, CH2 D2 , CHD3 , and CD4",

abstract = " Fourier transform infrared (FTIR) smog chamber techniques were used to investigate the atmospheric chemistry of the isotopologues of methane. Relative rate measurements were performed to determine the kinetics of the reaction of the isotopologues of methane with OH radicals in cm 3 molecule −1 s −1 units: k(CH 3 D + OH) = (5.19 ± 0.90) × 10 −15 , k(CH 2 D 2 + OH) = (4.11 ± 0.74) × 10 −15 , k(CHD 3 + OH) = (2.14 ± 0.43) × 10 −15 , and k(CD 4 + OH) = (1.17 ± 0.19) × 10 −15 in 700 Torr of air diluent at 296 ± 2 K. Using the determined OH rate coefficients, the atmospheric lifetimes for CH 4– x D x (x = 1–4) were estimated to be 6.1, 7.7, 14.8, and 27.0 years, respectively. The results are discussed in relation to previous measurements of these rate coefficients. ",

keywords = "deuterated methanes, isotope effects, isotopologues, OH kinetics",

author = "Frederickson, {Louise B{\o}ge} and Andersen, {Simone Thirstrup} and Nielsen, {Ole John}",

year = "2019",

doi = "10.1002/kin.21262",

language = "English",

volume = "51",

pages = "390--394",

journal = "International Journal of Chemical Kinetics",

issn = "0538-8066",

publisher = "JohnWiley & Sons, Inc.",

number = "6",

}

TY - JOUR

T1 - Rate coefficients for reactions of OH radicals with CH3 D, CH2 D2 , CHD3 , and CD4

AU - Frederickson, Louise Bøge

AU - Andersen, Simone Thirstrup

AU - Nielsen, Ole John

PY - 2019

Y1 - 2019

N2 - Fourier transform infrared (FTIR) smog chamber techniques were used to investigate the atmospheric chemistry of the isotopologues of methane. Relative rate measurements were performed to determine the kinetics of the reaction of the isotopologues of methane with OH radicals in cm 3 molecule −1 s −1 units: k(CH 3 D + OH) = (5.19 ± 0.90) × 10 −15 , k(CH 2 D 2 + OH) = (4.11 ± 0.74) × 10 −15 , k(CHD 3 + OH) = (2.14 ± 0.43) × 10 −15 , and k(CD 4 + OH) = (1.17 ± 0.19) × 10 −15 in 700 Torr of air diluent at 296 ± 2 K. Using the determined OH rate coefficients, the atmospheric lifetimes for CH 4– x D x (x = 1–4) were estimated to be 6.1, 7.7, 14.8, and 27.0 years, respectively. The results are discussed in relation to previous measurements of these rate coefficients.

AB - Fourier transform infrared (FTIR) smog chamber techniques were used to investigate the atmospheric chemistry of the isotopologues of methane. Relative rate measurements were performed to determine the kinetics of the reaction of the isotopologues of methane with OH radicals in cm 3 molecule −1 s −1 units: k(CH 3 D + OH) = (5.19 ± 0.90) × 10 −15 , k(CH 2 D 2 + OH) = (4.11 ± 0.74) × 10 −15 , k(CHD 3 + OH) = (2.14 ± 0.43) × 10 −15 , and k(CD 4 + OH) = (1.17 ± 0.19) × 10 −15 in 700 Torr of air diluent at 296 ± 2 K. Using the determined OH rate coefficients, the atmospheric lifetimes for CH 4– x D x (x = 1–4) were estimated to be 6.1, 7.7, 14.8, and 27.0 years, respectively. The results are discussed in relation to previous measurements of these rate coefficients.

KW - deuterated methanes

KW - isotope effects

KW - isotopologues

KW - OH kinetics

U2 - 10.1002/kin.21262

DO - 10.1002/kin.21262

M3 - Journal article

AN - SCOPUS:85062369115

SN - 0538-8066

VL - 51

SP - 390

EP - 394

JO - International Journal of Chemical Kinetics

JF - International Journal of Chemical Kinetics

IS - 6

ER -

Rate coefficients for reactions of OH radicals with CH3 D, CH2 D2 , CHD3 , and CD4

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Rate coefficients for reactions of OH radicals with CH₃ D, CH₂ D₂ , CHD₃ , and CD₄