Kinetics and branching ratios of the reactions NH2+NO2->N2O+H2O and NH2+NO2->H2NO+NO studied by pulse radiolysis combined with time-resolved infrared diode laser spectroscopy

H. Meunier; Palle Bjørn Pagsberg; A. Sillesen

doi:10.1016/0009-2614(96)00955-4

Kinetics and branching ratios of the reactions NH₂+NO₂->N₂O+H₂O and NH₂+NO₂->H₂NO+NO studied by pulse radiolysis combined with time-resolved infrared diode laser spectroscopy

H. Meunier, Palle Bjørn Pagsberg, A. Sillesen

Research output: Contribution to journal › Journal article › Research

Abstract

The source reaction F + NH3 --> HF + NH2 was initiated by the pulse radiolysis of NH3/SF6 mixtures, and the primary yield of F atoms was determined by monitoring the decrease in the infrared absorption of methane consumed in the titration reaction F + CH4 --> HF + CH3. The title reactions have been studied by monitoring the decay of NH2 and the simultaneous formation of N2O and NO by time-resolved infrared diode laser spectroscopy. The decay rate of NH2 was studied as a function of NO2 concentration to obtain an overall rate constant k(NH2 + NO2) = (1.35 +/- 0.15) X 10(-11) molecule(-1) cm(3) s(-1) at 298 K and with a bath gas pressure of p(SF6) = 40 mbar. Two product channels have been identified, N2O + H2O and H2NO + NO, with relative yields of (59 +/- 3)% and (40 +/- 5)%, respectively.

Original language	English
Journal	Chemical Physics Letters
Volume	261
Issue number	3
Pages (from-to)	277-282
ISSN	0009-2614
DOIs	https://doi.org/10.1016/0009-2614(96)00955-4
Publication status	Published - 1996

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@article{b3d28298686144278553ee8378f8a69e,

title = "Kinetics and branching ratios of the reactions NH2+NO2->N2O+H2O and NH2+NO2->H2NO+NO studied by pulse radiolysis combined with time-resolved infrared diode laser spectroscopy",

abstract = "The source reaction F + NH3 --> HF + NH2 was initiated by the pulse radiolysis of NH3/SF6 mixtures, and the primary yield of F atoms was determined by monitoring the decrease in the infrared absorption of methane consumed in the titration reaction F + CH4 --> HF + CH3. The title reactions have been studied by monitoring the decay of NH2 and the simultaneous formation of N2O and NO by time-resolved infrared diode laser spectroscopy. The decay rate of NH2 was studied as a function of NO2 concentration to obtain an overall rate constant k(NH2 + NO2) = (1.35 +/- 0.15) X 10(-11) molecule(-1) cm(3) s(-1) at 298 K and with a bath gas pressure of p(SF6) = 40 mbar. Two product channels have been identified, N2O + H2O and H2NO + NO, with relative yields of (59 +/- 3)% and (40 +/- 5)%, respectively. ",

keywords = "Atmosf{\ae}riske processers betydning for milj{\o}et; Vindenergi og atmosf{\ae}riske processer",

author = "H. Meunier and Pagsberg, {Palle Bj{\o}rn} and A. Sillesen",

year = "1996",

doi = "10.1016/0009-2614(96)00955-4",

language = "English",

volume = "261",

pages = "277--282",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

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TY - JOUR

T1 - Kinetics and branching ratios of the reactions NH2+NO2->N2O+H2O and NH2+NO2->H2NO+NO studied by pulse radiolysis combined with time-resolved infrared diode laser spectroscopy

AU - Meunier, H.

AU - Pagsberg, Palle Bjørn

AU - Sillesen, A.

PY - 1996

Y1 - 1996

N2 - The source reaction F + NH3 --> HF + NH2 was initiated by the pulse radiolysis of NH3/SF6 mixtures, and the primary yield of F atoms was determined by monitoring the decrease in the infrared absorption of methane consumed in the titration reaction F + CH4 --> HF + CH3. The title reactions have been studied by monitoring the decay of NH2 and the simultaneous formation of N2O and NO by time-resolved infrared diode laser spectroscopy. The decay rate of NH2 was studied as a function of NO2 concentration to obtain an overall rate constant k(NH2 + NO2) = (1.35 +/- 0.15) X 10(-11) molecule(-1) cm(3) s(-1) at 298 K and with a bath gas pressure of p(SF6) = 40 mbar. Two product channels have been identified, N2O + H2O and H2NO + NO, with relative yields of (59 +/- 3)% and (40 +/- 5)%, respectively.

AB - The source reaction F + NH3 --> HF + NH2 was initiated by the pulse radiolysis of NH3/SF6 mixtures, and the primary yield of F atoms was determined by monitoring the decrease in the infrared absorption of methane consumed in the titration reaction F + CH4 --> HF + CH3. The title reactions have been studied by monitoring the decay of NH2 and the simultaneous formation of N2O and NO by time-resolved infrared diode laser spectroscopy. The decay rate of NH2 was studied as a function of NO2 concentration to obtain an overall rate constant k(NH2 + NO2) = (1.35 +/- 0.15) X 10(-11) molecule(-1) cm(3) s(-1) at 298 K and with a bath gas pressure of p(SF6) = 40 mbar. Two product channels have been identified, N2O + H2O and H2NO + NO, with relative yields of (59 +/- 3)% and (40 +/- 5)%, respectively.

KW - Atmosfæriske processers betydning for miljøet; Vindenergi og atmosfæriske processer

U2 - 10.1016/0009-2614(96)00955-4

DO - 10.1016/0009-2614(96)00955-4

M3 - Journal article

SN - 0009-2614

VL - 261

SP - 277

EP - 282

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3