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篇目详细内容 |
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【篇名】 |
Complete oxidation of methane on Co3O4-SnO2 catalysts |
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【刊名】 |
Frontiers of Environmental Science and Engineering in China |
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【刊名缩写】 |
Front.Environ.Sci.Engin.China |
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【ISSN】 |
1673-7415 |
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【EISSN】 |
1673-7520 |
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【DOI】 |
10.1007/s11783-009-0019-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2009 |
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【卷期】 |
3
卷3期 |
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【页码】 |
265-270
页,共
6
页 |
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【作者】 |
Xingfu TANG;
Jiming HAO;
Junhua LI;
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【关键词】 |
Co3O4-SnO2; complete oxidation; methane (CH4) |
【摘要】 |
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Co3O4-SnO2 hybrid oxides were prepared by the coprecipitation method and were used to oxidate methane (CH4) in presence of oxygen. The Co3O4-SnO2 with a molar ratio of Co/(Co+Sn) at 0.75 exhibited the highest catalytic activity among all the Co3O4-SnO2 hybrid oxides. Experimental results showed that the catalysts were considerably stable in the CH4 combustion reaction, and were verified by X-ray photoelectron spectra (XPS). It was found that Co3O4 was the active species, and SnO2 acted as a support or a promoting component in the Co3O4-SnO2 hybrid oxides. The surface area was not a major factor that affected catalytic activity. The hydrogen temperature-programmed reduction (H2-TPR) results demonstrated that the interaction between cobalt and tin oxides accelerated the mobility of oxygen species of Co3O4-SnO2, leading to higher catalytic activity. |
