Reactions of propyl radicals: A shock tube–VUV photoionization mass spectrometry study

Banyon, Colin; Tranter, Robert S.

doi:10.1016/j.combustflame.2020.10.024

Cited by 6 publications

(15 citation statements)

References 29 publications

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“…These are at m/z 18, 28 and 32 and are due to background gases in the TOF-MS chamber being ionized when the filter is removed, similar effects were observed in other studies. 41,45 In Fig. 7b m/z 74 (triacetylene) is not observed in the PI mass spectrum and m/z 102 (phenylacetylene) is absent from the EI mass spectrum.…”

Section: Mass Spectrometrymentioning

confidence: 95%

“…The data were then processed through a baseline-correction code to remove background features that would complicate peak identification. 45 …”

Section: Experimental Methodsmentioning

confidence: 99%

“…The data were then processed through a baseline-correction code to remove background features that would complicate peak identification. 45 Laser schlieren densitometry DFST/LS experiments were performed behind incident shock waves. The LS technique has been described in detail elsewhere.…”

Section: Time-of-flight Mass Spectrometrymentioning

confidence: 99%

“…Details of the methods of analyzing and processing these data are described elsewhere. 41,45 For the following discussion, the data are reduced to 'classical' mass spectra (m/z vs. S), photoionization spectra (PE vs. S, for a particular m/z), and 'concentration' species time history (t vs. S, for a particular m/z). Often these datasets are formed from subsets of the total range of data to reveal particular features e.g.…”

Section: Mass Spectrometrymentioning

confidence: 99%

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Initiation reactions in the high temperature decomposition of styrene

Banyon

Schwind

Lynch

et al. 2021

Phys. Chem. Chem. Phys.

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Section: Mass Spectrometrymentioning

confidence: 95%

“…The data were then processed through a baseline-correction code to remove background features that would complicate peak identification. 45 …”

Section: Experimental Methodsmentioning

confidence: 99%

Section: Time-of-flight Mass Spectrometrymentioning

confidence: 99%

Section: Mass Spectrometrymentioning

confidence: 99%

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Initiation reactions in the high temperature decomposition of styrene

Banyon

Schwind

Lynch

et al. 2021

Phys. Chem. Chem. Phys.

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“…The reaction conditions were generated behind reflected shock waves in a miniature high-repetition-rate shock tube (HRRST). The HRRST/PIMS method has been previously applied to several pyrolysis systems under similar reaction conditions, and both open-shell and closed-shell species were observed. − A key difference to earlier studies is that these experiments were performed in two campaigns with the second set being conducted at a beamline endstation equipped with a monochromator. The benefits and challenges of this approach are discussed below.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Dissociation of Neopentanol: Shock Tube/Photoionization Mass Spectrometry Studies

Banyon

Tranter

2023

J. Phys. Chem. A

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The pyrolysis mechanism of 2,2-dimethylpropan-1-ol (neopentanol) has been investigated at high temperatures (1128–1401K) and high pressures (5 and 15 bar). The experiments were performed in a miniature shock tube coupled to a time-of-flight mass spectrometer. Cations were generated by tunable vacuum ultraviolet photoionization resulting in multidimensional data sets containing mass and photoionization spectra and the time histories of species. At the elevated temperatures and pressures of this work, neopentanol was determined to dissociate primarily by the scission of a C–C bond yielding tert-butyl and hydroxymethyl radicals. These promptly form isobutene and formaldehyde by H-atom elimination. In the structurally similar molecule neopentane, roaming radical reactions have previously been found to be important under conditions close to the present work (1260–1459 K, 1.1 bar). There are two possible roaming radical reactions for neopentanol. However, no experimental evidence for these reactions was found at the elevated pressures in this study, and the dissociation of neopentanol is dominated by bond scission yielding radical products.

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