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Direct measurement of the C 2 H 5 C(O)O 2 + NO reaction rate coefficient using chemical ionization mass spectrometry
Author(s) -
Froyd Karl D.,
Lovejoy Edward R.
Publication year - 1999
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1999)31:3<221::aid-kin4>3.0.co;2-2
Subject(s) - chemistry , mass spectrometry , chemical ionization , analytical chemistry (journal) , atmospheric pressure chemical ionization , ionization , environmental chemistry , chromatography , organic chemistry , ion
The rate coefficient for the reaction of the peroxypropionyl radical (C 2 H 5 C(O)O 2 ) with NO was measured with a laminar flow reactor over the temperature range 226–406 K. The C 2 H 5 C(O)O 2 reactant was monitored with chemical ionization mass spectrometry. The measured rate coefficients are k (T) = (6.7 ± 1.7) × 10 −12 exp{(340 ± 80)/T} cm 3 molecule −1 s −1 and k (298 K) = (2.1 ± 0.2) × 10 −11 cm 3 molecule −1 s −1 . Our results are comparable to recommended rate coefficients for the analogous CH 3 C(O)O 2 + NO reaction. Heterogeneous effects, pressure dependence, and concentration gradients inside the flow reactor are examined. © 1999 John Wiley & Sons, Inc. Int J Chem Kinet: 31: 221–228, 1999