Premium
A product study of the gas‐phase reaction of Methacrolein with the OH radical in the presence of NO x
Author(s) -
Tuazon Ernesto C.,
Atkinson Roger
Publication year - 1990
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.550220604
Subject(s) - chemistry , methacrolein , radical , yield (engineering) , medicinal chemistry , formaldehyde , double bond , photochemistry , carbon–carbon bond , organic chemistry , catalysis , materials science , monomer , metallurgy , methacrylic acid , polymer
The gas‐phase reaction of methacrolein with the OH radical, in the presence of NO x , was investigated at 298 ± 2 K and atmospheric pressure of air. Hydroxyacetone, methylglyoxal, a peroxyacyl nitrate identified as CH 2 C(CH 3 )C(O)OONO 2 (peroxymethacryloyl nitrate), formaldehyde, CO, and CO 2 were observed to be the major products. The product yield data for these compounds show that OH radical addition to the >C C< bond accounts for ca. 50% of the overall reaction, with the remaining ca. 50% proceeding via H—atom abstraction from the CHO group. The data suggest that the alkoxy radicalformed following the addition of OH to the terminal carbon atom, decomposes primarily to give the formyl radical plus hydroxyacetone. A lower limit ratio of 5: 1 has been estimated for OH radical addition to the terminal carbon atom of the double bond relative to addition on the inner carbon atom.