Kinetics and mechanistic studies of the atmospheric oxidation of alkynes.
Kinetics studies of the OH-initiated oxidation of 2-butyne, propyne, and acetylene were conducted at 100 Torr and 298 K using turbulent flow chemical ionization mass spectrometry. The major oxidation products were identified, and with the aid of supporting electronic structure thermodynamics calculations, a general OH-initiated oxidation mechanism for the alkynes is proposed. The major product branching ratio and the product-forming rate constants for the 2-butyne-OH adduct + O(2) reaction were experimentally determined as well. The atmospheric implications of the chemical oxidation mechanism and kinetics results are discussed.
Yeung
Laurence Y
LY
Department of Chemistry, Oberlin College, Oberlin, Ohio 44074, USA.
Pennino
Michael J
MJ
Miller
Angela M
AM
Elrod
Matthew J
MJ