Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Synthesis Gas Generation by Chemical-Looping Reforming Using Ce-Based Oxygen Carriers Modified with Fe, Cu, and Mn Oxides | |
| He, Fang1; Wei, Yonggang2; Li, Haibin1; Wang, Hua2 | |
| 2009-03-01 | |
| Source Publication | ENERGY & FUELS
 |
| ISSN | 0887-0624 |
| Volume | 23Issue:Sp. Iss. SIPages:2095-2102 |
| Corresponding Author | hefang@ms.giec.ac.cn |
| Abstract | Chemical-looping reforming (CLR) is a technology that can be used for partial oxidation and steam reforming of hydrocarbon fuels. It involves the use of a metal oxide as an oxygen carrier, which transfers oxygen from combustion air to the fuel. Composite oxygen carriers of cerium oxide added with Fe, Cu, and Mn oxides were prepared by co-precipitation and investigated in a thermogravimetric analyzer and a fixed-bed reactor using methane as fuel and air as oxidizing gas. It was revealed that the addition of transition-metal oxides into cerium oxide can improve the reactivity of the Ce-based oxygen carrier. The three kinds of mixed oxides showed high CO and H(2) selectivity at above 800 degrees C. As for the Ce-Fe-O oxygen carrier, methane was converted to synthesis gas at a H(2)/CO molar ratio close to 2:1 at a temperature of 800-900 degrees C; however, the methane thermolysis reaction was found on Ce-Cu-O and Ce-Mn-O oxygen carriers at 850-900 degrees C. Among the three kinds of oxygen carriers, Ce-Fe-O presented the best performance for methane CLR. On Ce-Fe-O oxygen carriers, the CO and H(2) selectivity decreased as the Fe content increased in the carrier particles. An optimal range of the Ce/Fe molar ratio is Ce/Fe > 1 for Ce-Fe-O oxygen carriers. Scanning electron microscopy (SEM) analysis revealed that the microstructure of the Ce-Fe-O oxides was not dramatically changed before and after 20 cyclic reactions. A small amount of Fe(3)C was found in the reacted Ce-Fe-O oxides by X-ray diffraction (XRD) analysis. |
| Subtype | Article |
| Other Abstract | Chemical-looping reforming (CLR) is a technology that can be used for partial oxidation and steam reforming of hydrocarbon fuels. It involves the use of a metal oxide as an oxygen carrier, which transfers oxygen from combustion air to the fuel. Composite oxygen carriers of cerium oxide added with Fe, Cu, and Mn oxides were prepared by co-precipitation and investigated in a thermogravimetric analyzer and a fixed-bed reactor using methane as fuel and air as oxidizing gas. It was revealed that the addition of transition-metal oxides into cerium oxide can improve the reactivity of the Ce-based oxygen carrier. The three kinds of mixed oxides showed high CO and H-2 selectivity at above 800 degrees C. As for the Ce-Fe-O oxygen carrier, methane was converted to synthesis gas at a H-2/CO molar ratio close to 2:1 at a temperature of 800-900 degrees C; however, the methane thermolysis reaction was found on Ce-Cu-O and Ce-Mn-O oxygen carriers at 850-900 degrees C. Among the three kinds of oxygen carriers, Ce-Fe-O presented the best performance for methane CLR. On Ce-Fe-O oxygen carriers, the CO and H-2 selectivity decreased as the Fe content increased in the carrier particles. An optimal range of the Ce/Fe molar ratio is Ce/Fe > 1 for Ce-Fe-O oxygen carriers. Scanning electron microscopy (SEM) analysis revealed that the microstructure of the Ce-Fe-O oxides was not dramatically changed before and after 20 cyclic reactions. A small amount of Fe3C was found in the reacted Ce-Fe-O oxides by X-ray diffraction (XRD) analysis. |
| Keyword | Laboratory Reactor Partial Oxidation Fluidized-bed Metal-oxides Iron-oxide Combustion Methane Nio Reactivity Separation |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1021/ef800922m |
| WOS Subject Extended | Energy & Fuels ; Engineering |
| URL | 查看原文 |
| WOS Keyword | LABORATORY REACTOR ; PARTIAL OXIDATION ; FLUIDIZED-BED ; METAL-OXIDES ; IRON-OXIDE ; COMBUSTION ; METHANE ; NIO ; REACTIVITY ; SEPARATION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | National Natural Science Foundation of China [50574046, 50774038]; Director Foundation of Guangzhou Institute of Energy Conversion [0807z2, 0807rf]; Chinese Academy of Sciences |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000265439000126 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/3352 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Kunming Univ Sci & Technol, Fac Mat & Met Engn, Kunming 650093, Peoples R China |
| Recommended Citation GB/T 7714 | He, Fang,Wei, Yonggang,Li, Haibin,et al. Synthesis Gas Generation by Chemical-Looping Reforming Using Ce-Based Oxygen Carriers Modified with Fe, Cu, and Mn Oxides[J]. ENERGY & FUELS,2009,23(Sp. Iss. SI):2095-2102. |
| APA | He, Fang,Wei, Yonggang,Li, Haibin,&Wang, Hua.(2009).Synthesis Gas Generation by Chemical-Looping Reforming Using Ce-Based Oxygen Carriers Modified with Fe, Cu, and Mn Oxides.ENERGY & FUELS,23(Sp. Iss. SI),2095-2102. |
| MLA | He, Fang,et al."Synthesis Gas Generation by Chemical-Looping Reforming Using Ce-Based Oxygen Carriers Modified with Fe, Cu, and Mn Oxides".ENERGY & FUELS 23.Sp. Iss. SI(2009):2095-2102. |
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