The current work reports, to our knowledge, the first oxidation
study of an unsaturated ketone at combustion temperatures using
the low-pressure shock tube (LPST) facility at King Abdullah University
of Science and Technology (KAUST). Also, the ignition delay
times of 2-butanone are measured at higher pressures than previously
reported. Ignition delay times of 3-buten-2-one are compared
with that of 2-butanone to illustrate the effect of double
bond on the ignition kinetics of ketones. An improvement of the
existing 2-butanone mechanism and the development of a detailed
3-buten-2-one chemistry are proposed in the current work. These
new models result in reasonable agreements with the experimental
data. In addition, the OH + 2-butanone (R1) rate forms a good
validation platform for the facility and the measurement of
OH + 3-buten-2-one (R2) rate reveals the impact that the double
bond has on the rate constant of this important reaction.