DOI: 10.1016/j.jcou.2017.08.001
Scopus记录号: 2-s2.0-85027708881
论文题名: CO2-reforming of methane to produce syngas over Co-Ni/SBA-15 catalyst: Effect of support modifiers (Mg, la and Sc) on catalytic stability
作者: Al-Fatesh A.S. ; Arafat Y. ; Atia H. ; Ibrahim A.A. ; Ha Q.L.M. ; Schneider M. ; M-Pohl M. ; Fakeeha A.H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 395
结束页码: 404
语种: 英语
英文关键词: Bimetals Co-Ni
; CO2-Reforming
; Mesoporous SBA-15
; Methane
; Syngas
Scopus关键词: Amorphous carbon
; Atmospheric pressure
; Bimetals
; Binary alloys
; Carbon
; Carbon dioxide
; Catalyst activity
; Catalysts
; Catalytic reforming
; Chemical reactors
; Magnesium alloys
; Mesoporous materials
; Methane
; Nickel
; Nickel alloys
; Scandium
; Synthesis gas
; Catalytic performance
; CO2 reforming
; CO2 reforming of methane
; Dry reforming-of-methane
; Hydrothermal methods
; Mesoporous SBA-15
; Strong metal support interaction
; Syn-gas
; Catalyst supports
英文摘要: The catalytic performance of CO2-reforming of methane over mesoporous Co-Ni/SBA-15-x (x = Mg, La and Sc) catalysts was investigated in 700-800 °C reaction temperature. The main target of this study was to obtain stable and active catalysts by the support modification with the addition of promoters. The catalysts were synthesized by hydrothermal method, whereas the characterization was carried out using XRD, BET, TPR, TPD, TGA/DTA and TEM. In case of Co-Ni/Mg-SBA-15 and Co-Ni/Sc-SBA-15, the better dispersion of Co and Ni species was obtained over the support due to the textural promoting effect of Mg and Sc, enhancing strong metal support interaction (MSI). Subsequently, the bimetals were successfully aligned and anchored into the hexagonal mesoporous channels of the supports. The dry reforming of methane was done in continuous fixed bed reactor under atmospheric pressure. Upon doping of Mg and Sc modifiers to the support, the CH4 conversion increased compared to the bare SBA-15 supported catalysts by 28% and 26%, while the CO2 conversion improved by 12% and 15%, respectively at 700 °C. TEM as well as TGA/DTA of the used catalysts revealed that the coke resistance was significantly improved as a result of the support modification, leading to the formation of amorphous carbon. Thus, the prolonged activity of Mg and Sc-modified support catalysts for 50 h revealed excellent stability of Co-Ni/SC-SBA-15 catalyst. Consequently, Sc emerged as a novel textural promoter, which remarkably improved the catalytic activity and exhibited outstanding stability. © 2017 Elsevier Ltd. All rights reserved. 资助项目: King Saud University
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52677
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Al-Fatesh A.S.,Arafat Y.,Atia H.,et al. CO2-reforming of methane to produce syngas over Co-Ni/SBA-15 catalyst: Effect of support modifiers (Mg, la and Sc) on catalytic stability[J]. Journal of CO2 Utilization,2017-01-01,21