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The UV spectrum of acetyl and the kinetics of the chain reaction between acetldehyde and chlorine

✍ Scribed by M. Matti Maricq; Joseph J. Szente

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 499 KB
Volume: 253
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00155-8

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✦ Synopsis

Time resolved UV spectroscopy has been used to investigate the role of acetyl radical in the photolytically initiated chain reaction of acetaldehyde with chlorine. At a resolution of 2 nm, acetyl has a broad, unstructured, absorption in the 200-280 nm range, with a peak cross section of (1.07 + 0.11) × 10 -17 cm 2 at 217 nm. The chain propagation reaction between acetyl and molecular chlorine has a measured rate constant of k2=2.8_+~i~ × 10 -11 e (-47-+91)/T cm 3 S -1 while the chain terminating self reaction proceeds with a rate constant of k 3 = 3.9+11] × 10-12 e(450+ ~2o)/r cm 3 s-~.

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