Acetic acid formation via the hydration of gas-phase ketene under ambient conditions

Tara F Kahan, Thomas K. Ormond, G. Barney Ellison, Veronica Vaida

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalChemical Physics Letters
Volume565
DOIs
StatePublished - Apr 5 2013

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acetic acid
Acetic Acid
Hydration
hydration
Gases
vapor phases
anhydrides
Dimers
dimers
biomass burning
products
carboxylic acids
hydrates
time dependence
plumes
Steam
water vapor
humidity
Carboxylic Acids
Hydrates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Acetic acid formation via the hydration of gas-phase ketene under ambient conditions. / Kahan, Tara F; Ormond, Thomas K.; Ellison, G. Barney; Vaida, Veronica.

In: Chemical Physics Letters, Vol. 565, 05.04.2013, p. 1-4.

Research output: Contribution to journalArticle

Kahan, Tara F ; Ormond, Thomas K. ; Ellison, G. Barney ; Vaida, Veronica. / Acetic acid formation via the hydration of gas-phase ketene under ambient conditions. In: Chemical Physics Letters. 2013 ; Vol. 565. pp. 1-4.
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