Evolution behavior and active oxygen quantification of reaction mechanism on cube Cu2O for CO self-sustained catalytic combustion and chemical-looping combustion
文献类型：期刊论文
| 作者 | Kang, Running2,3,4 ; Huang, Junqin3,4; Bin, Feng3,4; Teng, Zihao1,4; Wei, Xiaolin3,4; Dou, Baojuan1; Kasipandi, Saravanan2; Kang RN(康润宁); Wei XL(魏小林); Bin F(宾峰)
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| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
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| 出版日期 | 2022-08-05 |
| 卷号 | 310页码:12 |
| 关键词 | Active oxygen species CO Catalytic combustion Chemical-looping combustion Cube Cu2O |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2022.121296 |
| 通讯作者 | Bin, Feng(binfeng@imech.ac.cn) ; Dou, Baojuan(bjdou@tust.edu.cn) ; Kasipandi, Saravanan(Saravanan.Kasipandi@vtt.fi) |
| 英文摘要 | Catalytic combustion (CC) and chemical looping combustion (CLC) are promising technologies for energy saving and emission reduction of CO2 in treatment of steelmaking off-gas. This work firstly reports and compares the evolution behavior and quantitative reaction mechanisms of cube Cu2O model catalyst for CC and CLC reactions. The Cu2O-CC exhibited the higher activity and stability than Cu2O-CLC. The typical characterization results suggested that the only surface unstable Cu2O was oxidized to CuO, and the excellent synergistic effect of metal oxide interface (100) between Cu+/Cu2+ and active lattice oxygen species for Cu2O-CC reaction. But, for CLC reaction, Cu2O structure was collapsed, which caused the agglomeration of CuOx species and gradual decrease of reaction stability. Three different active oxygen species (surface cycle lattice oxygen, bulk lattice oxygen, and adsorbed oxygen) and the detailed reaction pathways were proposed by the in situ IR spectroscopy, isotopic (O-18(2)) transient exchange experiments and DFT simulation. The intrinsic activity of surface cycle lattice oxygen was higher in terms of TOF (13.5 x 10(-3) s(-1)) and facile formation of (COO)-O-16-O-18 on the cubic interface of Cu2O-CC through adsorbed CO during CC process. The contribution degrees of Mars-van-Krevelen (M-K) and Langmuir-Hinshelwood (L-H) mechanisms for CC and CLC reactions were 76.6% and 23.4% for CC, and 89.7% and 10.3% for CLC on Cu2O catalyst, respectively. |
| WOS关键词 | GENERALIZED GRADIENT APPROXIMATION ; CARBON-MONOXIDE ; SOOT OXIDATION ; KINETICS ; SURFACE ; PERFORMANCE ; REDUCTION ; STABILITY ; TOLUENE ; COPPER |
| 资助项目 | National Natural Science Foundation of China[52176141] ; China Scholar-ship Council[202004910623] |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000783883300002 |
| 资助机构 | National Natural Science Foundation of China ; China Scholar-ship Council |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88901]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Bin, Feng; Dou, Baojuan; Kasipandi, Saravanan |
| 作者单位 | 1.Tianjin Univ Sci & Technol, Tianjin 300457, Peoples R China 2.Aalto Univ, Sch Chem Engn, Dept Chem & Met Engn, Kemistintie 1,POB 16100, FI-00076 Espoo, Finland 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Kang, Running,Huang, Junqin,Bin, Feng,et al. Evolution behavior and active oxygen quantification of reaction mechanism on cube Cu2O for CO self-sustained catalytic combustion and chemical-looping combustion [J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2022,310:12. |
| APA |
Kang, Running.,Huang, Junqin.,Bin, Feng.,Teng, Zihao.,Wei, Xiaolin.,...&康润宁.(2022). Evolution behavior and active oxygen quantification of reaction mechanism on cube Cu2O for CO self-sustained catalytic combustion and chemical-looping combustion .APPLIED CATALYSIS B-ENVIRONMENTAL,310,12. |
| MLA |
Kang, Running,et al." Evolution behavior and active oxygen quantification of reaction mechanism on cube Cu2O for CO self-sustained catalytic combustion and chemical-looping combustion ".APPLIED CATALYSIS B-ENVIRONMENTAL 310(2022):12. |
入库方式： OAI收割
来源：力学研究所
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