ReportsChemistry

Direct frequency comb measurement of OD + CO → DOCO kinetics

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Science  28 Oct 2016:
Vol. 354, Issue 6311, pp. 444-448
DOI: 10.1126/science.aag1862

Combing through CO oxidation kinetics

Carbon monoxide reacts with OH radicals to produce CO2. This process is central to combustion and atmospheric oxidation chemistry. The reaction sequence is widely assumed to involve the intermediacy of a HOCO adduct that has eluded direct monitoring under thermal conditions. Bjork et al. successfully observed the formation of the deuterated analog of this intermediate, DOCO, while simultaneously monitoring OD by using a multifrequency infrared comb. The results confirm the termolecular nature of the formation mechanism and its sensitivity to the ambient bath gas.

Science, this issue p. 444

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