TY - JOUR
T1 - The CH2CHO + O channel of the reaction of vinyl radical with O2
AU - Oguchi, Tatsuo
AU - Sato, Yoshihisa
AU - Matsui, Hiroyuki
PY - 2009/4/20
Y1 - 2009/4/20
N2 - The reaction kinetics of C2H3 + O2 has been studied at room temperature, where, CH2CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10-12 cm3 molecule-1 s-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C2H3, the branching fraction of producing CH2CHO + O channel is determined as φ{symbol}(CH2CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.
AB - The reaction kinetics of C2H3 + O2 has been studied at room temperature, where, CH2CHO produced in this reaction is monitored quantitatively by using a laser induced fluorescence technique. The reaction rate constant is obtained as (8.5 ± 1.0) × 10-12 cm3 molecule-1 s-1 with almost no pressure dependence for the range of 10-100 Torr (He): the present result is consistent with the previous experimental studies. Also by using two different precursors as a source of C2H3, the branching fraction of producing CH2CHO + O channel is determined as φ{symbol}(CH2CHO) = 0.14-0.21, i.e., O-O bond scission in the reaction intermediate, vinylperoxy radical, is confirmed, exhibiting clear contrast to alkylperoxy radicals.
UR - http://www.scopus.com/inward/record.url?scp=63249097183&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2009.03.012
DO - 10.1016/j.cplett.2009.03.012
M3 - Article
AN - SCOPUS:63249097183
VL - 472
SP - 181
EP - 184
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -