Validation of the ozone + tetramethylethylene reaction using an atmospheric pressure flow reactor/ion trap mass spectrometer

Wedian, Fadel; Atkinson, Dean B.

doi:10.1007/s10874-011-9192-3

Cited by 1 publication

(2 citation statements)

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“…The reaction of tetramethylethylene (TME) with ozone rapidly generates OH radicals and is described as a dark and dry OH source . During the kinetic experiments, TME, MEA, and TMB were injected into the chamber and the oxidation reaction started upon addition of a flow of ozone.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The reaction of tetramethylethylene (TME) with ozone rapidly generates OH radicals and is described as a dark and dry OH source. 21 During the kinetic experiments, TME, MEA, and TMB were injected into the chamber and the oxidation reaction started upon addition of a flow of ozone. There was a short delay between the start of the addition of ozone and the observed decay of MEA and TMB, due to ozone diffusing through the chamber to react with TME (see Figure 1a).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Gas Phase Oxidation of Monoethanolamine (MEA) with OH Radical and Ozone: Kinetics, Products, and Particles

Borduas-Dedekind

Abbatt

Murphy

2013

Environ. Sci. Technol.

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Monoethanolamine (MEA) is currently the benchmark solvent in carbon capture and storage (CCS), a technology aimed at reducing CO2 emissions in large combustion industries. To accurately assess the environmental impact of CCS, a sound understanding of the fate of MEA in the atmosphere is necessary. Relative and absolute rate kinetic experiments were conducted in a smog chamber using online proton transfer reaction mass spectrometry (PTR-MS) to follow the decay of MEA. The room temperature (295 ± 3K) kinetics of oxidation with hydroxyl radicals from light and dark sources yield an average value of (7.02 ± 0.46) × 10(-11) cm(3) molec(-1) s(-1), in good agreement with previously published data. For the first time, the rate coefficient for MEA with ozone was measured: (1.09 ± 0.05) × 10(-18) cm(3) molec(-1) s(-1). An investigation into the oxidation products was also conducted using online chemical ionization mass spectrometry (CI-TOFMS) where formamide, isocyanic acid as well as higher order products including cyclic amines were detected. Significant particle numbers and mass loadings were observed during the MEA oxidation experiments and accounted for over 15% of the fate of MEA-derived nitrogen.

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Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%