Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure
A stable argon plasma at atmospheric pressure can be generated easily with irradiation of a low power of microwave (MW) to promotors like granules of activated carbon, biomass char, electrically conductive media, etc. It is well-known that plasma can contribute to significant activity of reactions....
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Taylor & Francis Group
2024-12-01
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| Series: | Journal of Chemical Engineering of Japan |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/00219592.2024.2387919 |
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| author | Xiuqiang Zhang Nobusuke Kobayashi Akira Suami Yoshinori Itaya |
| author_facet | Xiuqiang Zhang Nobusuke Kobayashi Akira Suami Yoshinori Itaya |
| author_sort | Xiuqiang Zhang |
| collection | DOAJ |
| description | A stable argon plasma at atmospheric pressure can be generated easily with irradiation of a low power of microwave (MW) to promotors like granules of activated carbon, biomass char, electrically conductive media, etc. It is well-known that plasma can contribute to significant activity of reactions. The reforming reaction of methane with carbon dioxide was studied in MW plasma at atmospheric pressure. Low power MW plasma converted methane and carbon dioxide into C2 hydrocarbons like ethylene and acetylene, carbon monoxide, and hydrogen. The effects of power supply, CH4/CO2 ratios, and total flow rate were studied on reforming of CH4 and CO2 in MW plasma at low power conditions. The results showed that increasing power facilitates the decomposition of CH4 and CO2, thereby enlarges the yield of each product. However, high power supply has a negative impact on the selectivity of C2. Higher CH4/CO2 ratio can effectively increase C2 selectivity, although it will reduce CH4 conversion. Longer the reaction time or lower gas flow rate reduces the selectivity of C2, while the high flow rate effectively avoids the re-decomposition of C2 products in the plasma region. Furthermore, it was recognized that an existence of CO2 contributes to activation of methane decomposition in MW plasma as well as the plasma contributes to significantly greater synthesis of C2 hydrocarbons than the yield predicted from the composition in the thermodynamic equilibrium. |
| format | Article |
| id | doaj-art-a5d2539e68b84211a4bb8dc7184f06c1 |
| institution | Kabale University |
| issn | 0021-9592 1881-1299 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Chemical Engineering of Japan |
| spelling | doaj-art-a5d2539e68b84211a4bb8dc7184f06c12024-12-19T15:13:29ZengTaylor & Francis GroupJournal of Chemical Engineering of Japan0021-95921881-12992024-12-0157110.1080/00219592.2024.2387919Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere PressureXiuqiang Zhang0Nobusuke Kobayashi1Akira Suami2Yoshinori Itaya3Environmental and Renewable Energy Systems, Gifu University, 1-1 Yanagido, Gifu City 501-1193 JapanEnvironmental and Renewable Energy Systems, Gifu University, 1-1 Yanagido, Gifu City 501-1193 JapanEnvironmental and Renewable Energy Systems, Gifu University, 1-1 Yanagido, Gifu City 501-1193 JapanEnvironmental and Renewable Energy Systems, Gifu University, 1-1 Yanagido, Gifu City 501-1193 JapanA stable argon plasma at atmospheric pressure can be generated easily with irradiation of a low power of microwave (MW) to promotors like granules of activated carbon, biomass char, electrically conductive media, etc. It is well-known that plasma can contribute to significant activity of reactions. The reforming reaction of methane with carbon dioxide was studied in MW plasma at atmospheric pressure. Low power MW plasma converted methane and carbon dioxide into C2 hydrocarbons like ethylene and acetylene, carbon monoxide, and hydrogen. The effects of power supply, CH4/CO2 ratios, and total flow rate were studied on reforming of CH4 and CO2 in MW plasma at low power conditions. The results showed that increasing power facilitates the decomposition of CH4 and CO2, thereby enlarges the yield of each product. However, high power supply has a negative impact on the selectivity of C2. Higher CH4/CO2 ratio can effectively increase C2 selectivity, although it will reduce CH4 conversion. Longer the reaction time or lower gas flow rate reduces the selectivity of C2, while the high flow rate effectively avoids the re-decomposition of C2 products in the plasma region. Furthermore, it was recognized that an existence of CO2 contributes to activation of methane decomposition in MW plasma as well as the plasma contributes to significantly greater synthesis of C2 hydrocarbons than the yield predicted from the composition in the thermodynamic equilibrium.https://www.tandfonline.com/doi/10.1080/00219592.2024.2387919Microwave plasmaC2 hydrocarbonsCH4/CO2 ratiosGas flow rateSelectivity |
| spellingShingle | Xiuqiang Zhang Nobusuke Kobayashi Akira Suami Yoshinori Itaya Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure Journal of Chemical Engineering of Japan Microwave plasma C2 hydrocarbons CH4/CO2 ratios Gas flow rate Selectivity |
| title | Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure |
| title_full | Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure |
| title_fullStr | Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure |
| title_full_unstemmed | Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure |
| title_short | Reforming of Methane and Carbon Dioxide to C2 Hydrocarbons in Microwave Plasma at Atmosphere Pressure |
| title_sort | reforming of methane and carbon dioxide to c2 hydrocarbons in microwave plasma at atmosphere pressure |
| topic | Microwave plasma C2 hydrocarbons CH4/CO2 ratios Gas flow rate Selectivity |
| url | https://www.tandfonline.com/doi/10.1080/00219592.2024.2387919 |
| work_keys_str_mv | AT xiuqiangzhang reformingofmethaneandcarbondioxidetoc2hydrocarbonsinmicrowaveplasmaatatmospherepressure AT nobusukekobayashi reformingofmethaneandcarbondioxidetoc2hydrocarbonsinmicrowaveplasmaatatmospherepressure AT akirasuami reformingofmethaneandcarbondioxidetoc2hydrocarbonsinmicrowaveplasmaatatmospherepressure AT yoshinoriitaya reformingofmethaneandcarbondioxidetoc2hydrocarbonsinmicrowaveplasmaatatmospherepressure |