DOI: 10.1016/j.jcou.2016.11.003
Scopus记录号: 2-s2.0-84995784675
论文题名: A core-shell structured Fe2O3/ZrO2@ZrO2 nanomaterial with enhanced redox activity and stability for CO2 conversion
作者: Hu J. ; Galvita V.V. ; Poelman H. ; Detavernier C. ; Marin G.B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 17 起始页码: 20
结束页码: 31
语种: 英语
英文关键词: Chemical looping
; CO2 conversion
; Core-shell structured material
; Iron oxide
; Oxygen storage materials
Scopus关键词: Carbon dioxide
; Characterization
; Impregnation
; Iron
; Iron oxides
; Nanostructured materials
; Redox reactions
; Sintering
; Stability
; Thermodynamic stability
; Zirconium alloys
; Chemical looping
; Core shell structure
; Core-shell morphologies
; High-temperature environment
; Isothermal redox cycles
; Oxygen storage materials
; Structural stabilities
; Structured materials
; Shells (structures)
英文摘要: A novel Fe2O3/ZrO2@ZrO2 nanomaterial with core-shell structure is proposed, where first Fe2O3 nanoparticles are loaded onto a ZrO2 support as a core and afterwards the core is coated with a thin and porous layer of ZrO2. Such combination of nanocoating and impregnation methods has been applied to synthesize core-shell oxygen storage nanomaterials with different iron oxide loading. 2D in-situ XRD patterns recorded during isothermal redox cycles at different temperatures (550-650 °C) show the evolution of Fe3O4 to metallic iron in Fe2O3/ZrO2@ZrO2 as a function of temperature. A detailed characterization of fresh and spent samples demonstrates that the Fe2O3/ZrO2@ZrO2 materials exhibit excellent structural stability (stable pore structure, specific surface area and core-shell morphology) and strong capability to resist sintering after 100 redox cycles at 650 °C for CO2 conversion to CO compared to the samples prepared by impregnation only. The strong thermal stability of ZrO2 coating materials contributes to keep up the activity of active phase during high-temperature environments. © 2016 Elsevier Ltd. 资助项目: China Scholarship Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52802
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Hu J.,Galvita V.V.,Poelman H.,et al. A core-shell structured Fe2O3/ZrO2@ZrO2 nanomaterial with enhanced redox activity and stability for CO2 conversion[J]. Journal of CO2 Utilization,2017-01-01,17