Reaction of carbon atoms, C (2p(2), P-3) with C2H2, C2H4 and C6H6: Overallrate constant and relative atomic hydrogen production

Authors
Bergeat, A Loison, JC
Citation
A. Bergeat et Jc. Loison, Reaction of carbon atoms, C (2p(2), P-3) with C2H2, C2H4 and C6H6: Overallrate constant and relative atomic hydrogen production, PHYS CHEM P, 3(11), 2001, pp. 2038-2042
Citations number
28
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN journal
14639076 → ACNP
Volume
3
Issue
11
Year of publication
2001
Pages
2038 - 2042
Database
ISI
SICI code
1463-9076(2001)3:11<2038:ROCAC(>2.0.ZU;2-1
Abstract
The multichannel C+C2H2, C2H4 and C6H6 reactions were studied, at room temp erature, in a low-pressure fast-flow reactor. Carbon atoms were obtained fr om the reaction of CBr4 with potassium atoms. The overall rate constants we re found to be (2.4 +/-0.5)x10(-10), (2.1 +/-0.4)x10(-10) and (2.8 +/-0.8)x 10(-10) cm(3) molecule(-1) s(-1), respectively. The relative atomic hydroge n productions were determined by resonance fluorescence in the vacuum ultra violet: H (C+C2H2/C+C2H4)=0.58 +/-0.04, H (C+C6H6/C+C2H4)=0.17 +/-0.05, the H production from the C+C2H4 reaction being the reference. The absolute H branching ratio of the C+C2H4 was estimated to be 0.92 +/-0.04.