The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation
The comparative and combined effects of nitric oxide (NO) and higher alkanes on methane oxidation were examined by experimentation and kinetic modeling. Experiments were conducted using fuel-lean, lower-alkanes mixtures with NO (0–400 ppm v/v) in an atmospheric flow reactor at residence time of 2 s...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Taylor and Francis Group
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/27187 |
| _version_ | 1848752193666023424 |
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| author | Chan, Y.L. Bromly, John Konnov, A. Zhang, D. |
| author_facet | Chan, Y.L. Bromly, John Konnov, A. Zhang, D. |
| author_sort | Chan, Y.L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The comparative and combined effects of nitric oxide (NO) and higher alkanes on methane oxidation were examined by experimentation and kinetic modeling. Experiments were conducted using fuel-lean, lower-alkanes mixtures with NO (0–400 ppm v/v) in an atmospheric flow reactor at residence time of 2 s over the temperature range of 820–950 K. NO was found to greatly promote methane conversion, and its sensitizing effect strengthened with the increasing concentration that was added to the system. The promoting effect of higher alkanes on methane conversion was also evident, particularly at zero or low NO concentrations. A strong dependency of the sensitizing effect on the concentration of higher alkanes present was also observed. The kinetic mechanism from Le Cong et al., performed reasonably well in reproducing the experimental trends. However, the sensitizing propensity of higher alkanes in the presence of NO could not be unambiguously ranked under all conditions. Modification to the kinetic mechanism of Le Cong et al., was attempted. Specifically, the submechanism of C3 peroxy radicals was added, but the modeling results indicated a lower impact on methane conversion than was initially expected. The most sensitive reactions were revealed, and the generalized reaction pathways for methane oxidation sensitized by higher alkanes, with or without the presence of NO, were also proposed, following detailed sensitivity analysis. |
| first_indexed | 2025-11-14T08:04:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-27187 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:04:44Z |
| publishDate | 2012 |
| publisher | Taylor and Francis Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-271872017-09-13T15:32:26Z The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation Chan, Y.L. Bromly, John Konnov, A. Zhang, D. Methane oxidation Sensitization Nitric oxide Higher alkanes The comparative and combined effects of nitric oxide (NO) and higher alkanes on methane oxidation were examined by experimentation and kinetic modeling. Experiments were conducted using fuel-lean, lower-alkanes mixtures with NO (0–400 ppm v/v) in an atmospheric flow reactor at residence time of 2 s over the temperature range of 820–950 K. NO was found to greatly promote methane conversion, and its sensitizing effect strengthened with the increasing concentration that was added to the system. The promoting effect of higher alkanes on methane conversion was also evident, particularly at zero or low NO concentrations. A strong dependency of the sensitizing effect on the concentration of higher alkanes present was also observed. The kinetic mechanism from Le Cong et al., performed reasonably well in reproducing the experimental trends. However, the sensitizing propensity of higher alkanes in the presence of NO could not be unambiguously ranked under all conditions. Modification to the kinetic mechanism of Le Cong et al., was attempted. Specifically, the submechanism of C3 peroxy radicals was added, but the modeling results indicated a lower impact on methane conversion than was initially expected. The most sensitive reactions were revealed, and the generalized reaction pathways for methane oxidation sensitized by higher alkanes, with or without the presence of NO, were also proposed, following detailed sensitivity analysis. 2012 Journal Article http://hdl.handle.net/20.500.11937/27187 10.1080/00102202.2011.622320 Taylor and Francis Group restricted |
| spellingShingle | Methane oxidation Sensitization Nitric oxide Higher alkanes Chan, Y.L. Bromly, John Konnov, A. Zhang, D. The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title | The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title_full | The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title_fullStr | The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title_full_unstemmed | The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title_short | The comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| title_sort | comparative and combined effects of nitric oxide and higher alkanes in sensitizing methane oxidation |
| topic | Methane oxidation Sensitization Nitric oxide Higher alkanes |
| url | http://hdl.handle.net/20.500.11937/27187 |