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Effect of electron beam irradiation on CO2 reforming of methane over Ni/Al2O3 catalysts |
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| Authors: | Jin Jun Jo-Chun Kim Joong-Hyeok Shin Ki-Wan Lee Young Soon Baek |
| Affiliation: | a Department of Environmental Engineering, Dongshin University, 252 Daeho-Dong, Naju, 520-714, South Korea b Department of Environmental Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, South Korea c LNG Technology Research Center, Korea Gas Corporation, 973 Dongchun-Dong, Yeonsu-Gu, Incheon, 406-130, South Korea |
| Abstract: | The effect of electron beam irradiation on the CO2 reforming of methane over Ni/Al2O3 was investigated. The conversion rate of CO2 and CH4 forming H2 and CO using various catalysts irradiated with an absorbed dose greater than 2 MGy was 5–10% higher than when using an untreated catalyst. The Ni/O ratio on the catalyst surface increased after treatment with an electron beam, and was more prominent for catalysts with a higher Ni content. As such, based on XRD and XPS measurements, electron beam treatment was found to result in either the desorption of oxygen from NiO or the removal of OH groups from the outermost surface layer of the catalyst. In addition, the concentration of active sites, such as Ni2+ and NiO, or surface defects was also found to increase with the absorbed radiation dose, thereby increasing the conversion rate. |
| Keywords: | CO2 reforming of methane Electron beam Reforming catalyst Ni/Al2O3 catalyst Synthetic gas |
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