DOI: 10.1016/j.jcou.2016.12.005
Scopus记录号: 2-s2.0-85003876166
论文题名: Flower-like Al2O3-supported iron oxides as an efficient catalyst for oxidative dehydrogenation of ethlybenzene with CO2
作者: Wang T. ; Qi L. ; Lu H. ; Ji M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 17 起始页码: 162
结束页码: 169
语种: 英语
英文关键词: Carbon dioxide
; Ethylbenzene dehydrogenation
; Flower-like alumina
; Iron oxide
Scopus关键词: Alumina
; Aluminum
; Carbon
; Carbon dioxide
; Catalyst activity
; Catalysts
; Cyclic voltammetry
; Dehydrogenation
; Electron microscopy
; Electron spin resonance spectroscopy
; Ethylbenzene
; Field emission microscopes
; High resolution transmission electron microscopy
; Iron
; Iron oxides
; Magnetic resonance
; Paramagnetic resonance
; Scanning electron microscopy
; Temperature programmed desorption
; Transmission electron microscopy
; X ray diffraction
; X ray photoelectron spectroscopy
; Electron paramagnetic resonances (EPR)
; Ethylbenzene conversion
; Ethylbenzene dehydrogenation
; Field emission scanning electron microscopy
; Flower-like morphologies
; Iron oxide catalyst
; Oxidative dehydrogenations
; Temperature-programmed reduction
; Catalyst supports
英文摘要: An Al2O3 support with flower-like morphology was used as the support of iron oxide catalyst for oxidative dehydrogenation of ethylbenzene with CO2. A commercial Al2O3 was also used for comparison. These catalyst materials were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), N2 physisorption, H2 temperature programmed reduction (H2-TPR), cyclic voltammetry (CV), electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS) and CO2 temperature programmed desorption (CO2-TPD) techniques. It was found that the concentration of O2- anions on the flower-like Al2O3 surface was significantly higher than that on the commercial Al2O3 surface, leading to large amounts of highly dispersed FexOy clusters on flower-like Al2O3 in contrast with large Fe2O3 particles mainly present on commercial Al2O3. A possible formation mechanism of the small FexOy clusters was proposed. The catalytic results indicated that the highly dispersed FexOy clusters possessed an excellent catalytic activity, since the ethylbenzene conversion over Fe2O3/flower-like Al2O3 was 1.6 times higher than that over Fe2O3/commercial Al2O3. This work provides a new route for designing supported iron catalysts that are widely used, and flower-like Al2O3 is expected to be a promising catalyst support for oxidative dehydrogenation of ethylbenzene with CO2. © 2016 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52831
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Wang T.,Qi L.,Lu H.,et al. Flower-like Al2O3-supported iron oxides as an efficient catalyst for oxidative dehydrogenation of ethlybenzene with CO2[J]. Journal of CO2 Utilization,2017-01-01,17