| CeO2 as the Oxygen Carrier for Partial Oxidation of Methane to Synthesis Gas in Molten Salts： Thermodynamic Analysis and Experimental Investigation |
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| 作者姓名： | Yonggang Wei Hua Wang Fang He Xianquan Ao Chiyuan Zhang |
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| 作者单位： | Faculty of Materials and Metallurgy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （No. 50574046, No. 50164002, ） and Science ＆ Technology Foundation of Baoshan Iron and Steel Co. Ltd, Natural Science Foundation of Yunnan province （No. 2004E0058Q）, School of High Learning Doctoral Subject Special Science and Research Foundation of Ministry of Education （No. 20040674005） |
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| 摘 要： | A new technique -- the direct partial oxidation of methane to synthesis gas using lattice oxygen in molten salts medium has been introduced. Using CeO2 as the oxygen carrier, thermodynamic data were calculated in the reaction process, and the results indicated that direct partial oxidation of methane to synthesis gas using lattice oxygen of cerium oxide is feasible in theory. In a stainless steel reactor, the effects of temperature and varying amounts of γ-Al2O3 supported CeO2 on cn4 conversion, H2 and CO selectivity, were investigated, respectively. The results show that 10% CeO2/γ-Al2O3 has the maximal reaction activity at a temperature of 865 ℃ and above, the H2/CO ratio in the gas that has been produced reaches 2 and the CH4 conversion, H2 and CO selectivity reached the following percentages： i.e. 61%, 89%, and 91% at 870 ℃, respectively. In addition, increase of reaction temperature is favorable for the partial oxidation of methane.
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| 关 键 词： | 甲烷 部分氧化 合成气 熔盐 CeO2 氧气载体 热力学分析 实验研究 |
| 收稿时间： | 2006-10-18 |
| 修稿时间： | 2006-12-14 |
CeO2 as the Oxygen Carrier for Partial Oxidation of Methane to Synthesis Gas in Molten Salts: Thermodynamic Analysis and Experimental Investigation |
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| Yonggang Wei Hua Wang Fang He Xianquan Ao Chiyuan Zhang.CeO2 as the Oxygen Carrier for Partial Oxidation of Methane to Synthesis Gas in Molten Salts: Thermodynamic Analysis and Experimental Investigation[J].Journal of Natural Gas Chemistry,2007,16(1):6-11. |
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| Authors: | Yonggang Wei Hua Wang Fang He Xianquan Ao Chiyuan Zhang |
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| Institution: | aFaculty of Materials and Metallurgy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China |
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| Abstract: | A new technique - the direct partial oxidation of methane to synthesis gas using lattice oxygen in molten salts medium has been introduced. Using CeO2 as the oxygen carrier, thermodynamic data were calculated in the reaction process, and the results indicated that direct partial oxidation of methane to synthesis gas using lattice oxygen of cerium oxide is feasible in theory. In a stainless steel reactor, the effects of temperature and varying amounts of γ-Al2O3 supported CeO2 on CH4 conversion,H2 and CO selectivity, were investigated, respectively. The results show that 10% CeO2/γ-Al2O3 has the maximal reaction activity at a temperature of 865 ℃ and above, the H2/CO ratio in the gas that has been produced reaches 2 and the CH4 conversion, H2 and CO selectivity reached the following percentages: i.e.61%, 89%, and 91% at 870 ℃, respectively. In addition, increase of reaction temperature is favorable for the partial oxidation of methane. |
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| Keywords: | partial oxidation methane cerium oxide synthesis gas molten salt |
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