Influences of reaction and thermal conditions on microstructural evolutions of ilmenite oxygen carriers for chemical looping combustion
文献类型：期刊论文
| 作者 | Chen, Liangyong2; Wei, Guoqiang1; Liu, Kunlei3 |
| 刊名 | FUEL PROCESSING TECHNOLOGY
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 228页码:14 |
| 关键词 | Chemical-Looping Combustion Ilmenite oxygen carriers Microstructural evolution Redox cycle Thermal conditions |
| ISSN号 | 0378-3820 |
| DOI | 10.1016/j.fuproc.2021.107139 |
| 通讯作者 | Chen, Liangyong(101012271@seu.edu.cn) |
| 英文摘要 | Ilmenite ore has been widely accepted to be a cost-effective oxygen carrier (OC) of Chemical Looping Combustion (CLC) for CO2 capture. The focus of this study is to investigate into the influences of chemical impact, thermal variation and ageing effect on microstructure and performance evolutions of ilmenite OCs. Iron element migration, crystallinity and morphology alterations, and irreversible change of chemical composition were identified to be the major aspects responsible for gradual microstructural evolutions of Ilmenite OCs. Iron element migration from bulk materials to particle surface, occurring during the oxidation step of redox cycles, was of temperature- and O-2 concentration- dependences. A schematic diagram was developed to explain the pathways of irreversible iron migration and alteration of chemical composition in redox cycle reactions. By lowering phase interaction between Fe2TiO5 and TiO2, the cycled thermal shock (due to reaction and processing in CLC) promotes the iron element concentration on OC particle surface and the ilmenite OC reactivity. Longterm ageing at elevated temperature, as one of typical severe conditions in CLC, exhibits activation effects for ilmenite OCs, even though it causes increased crystallinity, denser particle structure and redistribution of Fe2TiO5-TiO2 phase |
| WOS关键词 | PHASE INTERACTIONS ; REDOX CYCLES ; COAL ; STABILITY ; METHANE ; DEACTIVATION ; PERFORMANCE ; ACTIVATION ; TRANSITION ; MECHANISMS |
| 资助项目 | National Key R&D Program of China[2018YFB0605401-04] ; Entrepreneurship & Innovation Plan of Jiangsu Province of China ; Southeast University[2242019K3DZ08] ; China Pharmaceutical University[2242019K3DZ08] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000749956300005 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program of China ; Entrepreneurship & Innovation Plan of Jiangsu Province of China ; Southeast University ; China Pharmaceutical University |
| 源URL | [http://ir.giec.ac.cn/handle/344007/35782]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Chen, Liangyong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Southeast Univ, Key Lab Energy Thermal Convers & Control, Sipailou 2, Nanjing 210096, Peoples R China 3.Univ Kentucky, Ctr Appl Energy Res, Lexington, KY 40511 USA |
| 推荐引用方式 GB/T 7714 | Chen, Liangyong,Wei, Guoqiang,Liu, Kunlei. Influences of reaction and thermal conditions on microstructural evolutions of ilmenite oxygen carriers for chemical looping combustion[J]. FUEL PROCESSING TECHNOLOGY,2022,228:14. |
| APA | Chen, Liangyong,Wei, Guoqiang,&Liu, Kunlei.(2022).Influences of reaction and thermal conditions on microstructural evolutions of ilmenite oxygen carriers for chemical looping combustion.FUEL PROCESSING TECHNOLOGY,228,14. |
| MLA | Chen, Liangyong,et al."Influences of reaction and thermal conditions on microstructural evolutions of ilmenite oxygen carriers for chemical looping combustion".FUEL PROCESSING TECHNOLOGY 228(2022):14. |
入库方式： OAI收割
来源：广州能源研究所
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