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UV absorption spectrum of CH3OCH2 radicals and kinetics of the reaction of CH3OCH2O2 radicals with NO and NO2 in the gas phase

✍ Scribed by Sarka Langer; Evert Ljungström; Thomas Ellermann; Ole J. Nielsen; Jens Sehested

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
252 KB
Volume
240
Category
Article
ISSN
0009-2614

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✦ Synopsis

Alkyl and alkylperoxy radicals originating from dimethyl ether have been studied in the gas phase at 296 K. A pulse radiolysis-UV absorption technique was used. Absorption cross-sections were quantified over the wavelength range 220-350 nm. At 230 nm, O'cH3oclJ2 = (4.2 + 0.5)× 10 -18 cm 2 molecule-l has been obtained. Rate constants for the reaction of the alkylperoxy radical with NO and NO 2 were determined to be (9.1 ± 1.0) × 10 -12 cm 3 molecule-1 s-1 and (7.9 ± 0.4) × 10-12 cm 3 molecule-1 s-1, respectively.

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