Selective detection of Isomers with Photoionization mass spectrometry for studies of hydrocarbon flame chemistry
| Autor: | Lionel Poisson, T.A. Cool, Andrew McIlroy, Phillip R. Westmoreland, Matthew E. Law, Darcy S. Peterka, Fei Qi, Musahid Ahmed, T Mostefaoui, Koichi Nakajima |
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| Přispěvatelé: | School of Applied and Engineering physics [Ithaca] (AEP Cornell), Cornell University [New York], Laboratoire Francis PERRIN (LFP - URA 2453), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Lawrence Berkeley National Laboratory [Berkeley] (LBNL) |
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
Vinyl alcohol
Allene Analytical chemistry General Physics and Astronomy Synchrotron radiation Photoionization photoionisation 010402 general chemistry Photochemistry Mass spectrometry Propyne 01 natural sciences 7. Clean energy chemistry.chemical_compound Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Physical and Theoretical Chemistry Physics::Chemical Physics 010304 chemical physics synchrotron radiation 33.80.Eh 41.60.Ap 03.50.De 42.72.Bj flames mass spectra 0104 chemical sciences [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry chemistry Mass spectrum |
| Zdroj: | Journal of Chemical Physics Journal of Chemical Physics, American Institute of Physics, 2003, 119, pp.9356-8365. ⟨10.1063/1.1611173⟩ Journal of Chemical Physics, 2003, 119, pp.9356-8365. ⟨10.1063/1.1611173⟩ |
| ISSN: | 0021-9606 1089-7690 |
| DOI: | 10.1063/1.1611173⟩ |
| Popis: | We report the first use of synchrotron radiation, continuously tunable from 8 to 15 eV, for flame-sampling photoionization mass spectrometry (PIMS). Synchrotron radiation offers important advantages over the use of pulsed vacuum ultraviolet lasers for PIMS; these include superior signal-to-noise, soft ionization, and access to photon energies outside the limited tuning ranges of current VUV laser sources. Near-threshold photoionization efficiency measurements were used to determine the absolute concentrations of the allene and propyne isomers of C3H4 in low-pressure laminar ethylene–oxygen and benzene–oxygen flames. Similar measurements of the isomeric composition of C2H4O species in a fuel-rich ethylene–oxygen flame revealed the presence of substantial concentrations of ethenol (vinyl alcohol) and acetaldehyde. Ethenol has not been previously detected in hydrocarbon flames. Absolute photoionization cross sections were measured for ethylene, allene, propyne, and acetaldehyde, using propene as a calibration standard. PIE curves are presented for several additional reaction intermediates prominent in hydrocarbon flames. |
| Databáze: | OpenAIRE |
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