TY - JOUR
T1 - Acetic acid formation via the hydration of gas-phase ketene under ambient conditions
AU - Kahan, Tara F.
AU - Ormond, Thomas K.
AU - Ellison, G. Barney
AU - Vaida, Veronica
N1 - Funding Information:
V.V. and T.F.K. are supported by NSF Grant CHE- 1011770 . G.B.E. and T.K.O. are supported by NSF grant CHE- 1112466 . The authors thank J.S. Francisco and J.A. de Gouw for helpful discussions.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/4/5
Y1 - 2013/4/5
N2 - We have monitored changes in the infrared spectrum of gas-phase ketene in the presence of water vapor at 295 K. The products observed from ketene hydration are acetic acid, acetic acid dimer, and acetic anhydride. The time-dependence of product formation supports a reaction mechanism in which ketene hydrates to form acetic acid, which then combines with another acetic acid monomer to form a dimer, or with ketene to form acetic anhydride. These results show that ketene can undergo hydration under atmospherically-relevant temperatures and relative humidities. This reaction could be a source of atmospheric carboxylic acids, especially in biomass burning plumes.
AB - We have monitored changes in the infrared spectrum of gas-phase ketene in the presence of water vapor at 295 K. The products observed from ketene hydration are acetic acid, acetic acid dimer, and acetic anhydride. The time-dependence of product formation supports a reaction mechanism in which ketene hydrates to form acetic acid, which then combines with another acetic acid monomer to form a dimer, or with ketene to form acetic anhydride. These results show that ketene can undergo hydration under atmospherically-relevant temperatures and relative humidities. This reaction could be a source of atmospheric carboxylic acids, especially in biomass burning plumes.
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U2 - 10.1016/j.cplett.2013.02.030
DO - 10.1016/j.cplett.2013.02.030
M3 - Article
AN - SCOPUS:84875462415
SN - 0009-2614
VL - 565
SP - 1
EP - 4
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -