Real-time monitoring for reforming processes of liquid hydrocarbon fuel-air pre-mixtures by non-thermal plasmas using ion attachment mass spectrometry
| Autor: | Akira Kuramochi, Eiichi Takahashi, Daiki Asakawa, Naoaki Saito |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Thermal efficiency Materials science 010401 analytical chemistry General Physics and Astronomy 02 engineering and technology Plasma Dielectric barrier discharge 021001 nanoscience & nanotechnology Combustion 01 natural sciences Aldehyde 0104 chemical sciences Hydrocarbon chemistry Chemical engineering Ion-attachment mass spectrometry Physical and Theoretical Chemistry 0210 nano-technology Alkyl |
| Zdroj: | Physical chemistry chemical physics : PCCP. 20(2) |
| ISSN: | 1463-9084 |
| Popis: | Plasma induced reforming processes of fuel–air mixtures were investigated to understand the mechanism of the plasma-assisted combustion technique, which can improve the thermal efficiency and stability of internal combustion engines. In this study, a mixture of air with isooctane or n-heptane fuels was reformed by non-thermal plasma in a flow reactor, generated by a dielectric barrier discharge, and then directly analyzed using ion attachment mass spectrometry. Plasma irradiation of an air/hydrocarbon mixture produced an oxygen atom which then reacted with a hydrocarbon, leading to hydroxyl and alkyl radicals. The alkyl radical was immediately converted to alkyl hydroperoxide, which is suggested to be a long-living intermediate for the fuel reforming process. Finally, ketone and aldehyde were formed through the alkyloxy radical intermediate. The details of each reaction process were investigated by ab initio calculations. The proposed plasma induced fuel reforming processes are strongly supported by the computational results. |
| Databáze: | OpenAIRE |
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