Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Pressure dependent OH yields in the reactions of CH3CO and HOCH2CO with O2

MPG-Autoren
/persons/resource/persons100966

Groß,  C. B. M.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons100909

Dillon,  T. J.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons100898

Crowley,  J. N.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Groß, C. B. M., Dillon, T. J., & Crowley, J. N. (2014). Pressure dependent OH yields in the reactions of CH3CO and HOCH2CO with O2. Physical Chemistry Chemical Physics, 16(22), 10990-10998. doi:10.1039/c4cp01108b.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-A107-4
Zusammenfassung
OH-formation in the reactions of CH3CO (R1) and HOCH2CO (R4) with O-2 was studied in He, N-2 and air (27 to 400 mbar) using OH-detection by laser induced fluorescence (LIF). 248 nm laser photolysis of COCl2 in the presence of CH3CHO or HOCH2CHO was used as source of the acyl radicals CH3CO and HOCH2CO. The LIF-system was calibrated in back-to-back experiments by the 248 nm laser photolysis of H2O2 as OH radical precursor. A straight-forward analytical expression was used to derive OH yields (alpha) for both reactions. A Stern-Volmer-analysis results in alpha(-1)(1b)(N-2) = 1 + (9.4 +/- 1.7) x 10(-18) cm(3) molecule(-1) x [M], alpha(-1)(1b)(He) = 1 + (3.6 +/- 0.6) x 10(-18) cm(3) molecule(-1) x [M] and alpha(-1)(4b)(N-2) = 1 + (1.85 +/- 0.38) x 10(-18) cm(3) molecule(-1) x [M]. Our results for CH3CO are compared to the previous (divergent) literature values whilst that for HOCH2CO, for which no previous data were available, provide some insight into the factors controlling the yield of OH in these reactions.