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A shock tube study of the reaction of methyl radicals with hydroxyl radicals
Author(s) -
Bott J. F.,
Cohen N.
Publication year - 1991
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/kin.550231106
Subject(s) - chemistry , radical , shock tube , acetone , atmosphere (unit) , absorption (acoustics) , atmospheric pressure , analytical chemistry (journal) , reaction mechanism , photochemistry , shock wave , thermodynamics , organic chemistry , catalysis , meteorology , physics , acoustics
The reaction of CH 3 with OH has been studied near 1200 K and 1 atmosphere pressure in shock tube experiments in which UV absorption was used to monitor [OH]. A rate coefficient of (1.1 ± 0.3) × 10 13 cm 3 /mol‐s was measured for removal of OH by CH 3 . This measured value is compared with previous experimental data and calculations. Several possible reaction channels are discussed, and although products were not monitored, it seems probable, on the basis of other work and theoretical estimates, that the primary mechanism (≃75%) for the removal of OH by CH 3 at these conditions is their combination to form CH 3 OH. Rate coefficients of (5.3 ± 0.8) × 10 12 and (9.0 ± 1.4) × 10 12 cm 3 /mol‐s were measured for the reactions of OH with acetone and ethane, respectively, at the same temperature and pressure.