Dimerization of the Benzyl Radical in a High-Temperature Pyrolysis Reactor Investigated by IR/UV Ion Dip Spectroscopy
| Autor: | Florian Hirsch, Philipp Constantinidis, Ingo Fischer, Anouk M. Rijs, Sjors Bakels |
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| Rok vydání: | 2018 |
| Předmět: |
010304 chemical physics
Molecular and Biophysics Radical Organic Chemistry Infrared spectroscopy Diphenylmethane General Chemistry Fluorene Phenanthrene 010402 general chemistry Photochemistry 01 natural sciences Toluene Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry 0103 physical sciences Bibenzyl FELIX Spectroscopy |
| Zdroj: | Chemistry : a European Journal, 24, 7647-7652 Chemistry : a European Journal, 24, 30, pp. 7647-7652 |
| ISSN: | 0947-6539 |
| Popis: | We investigate the self-reaction of benzyl, C7 H7 , in a high-temperature pyrolysis reactor. The work is motivated by the observation that resonance-stabilized benzyl radicals can accumulate in reactive environments and contribute to the formation of polycyclic aromatic hydrocarbons (PAHs) and soot. Reaction products are detected by IR/UV ion dip spectroscopy, using infrared radiation from the free electron laser FELIX, and are identified by comparison with computed spectra. Among the reaction products identified by their IR absorption are several PAHs linked to toluene combustion such as bibenzyl, phenanthrene, diphenylmethane, and fluorene. The identification of 9,10-dihydrophenanthrene provides evidence for a mechanism of phenanthrene formation from bibenzyl that proceeds by initial cyclization rather than an initial hydrogen loss to stilbene. |
| Databáze: | OpenAIRE |
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