DOI: 10.1016/j.jcou.2018.06.002
Scopus记录号: 2-s2.0-85048312784
论文题名: Effect of supports on the performance of Co-based catalysts in methane dry reforming
作者: Park J.-H. ; Yeo S. ; Chang T.-S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 465
结束页码: 475
语种: 英语
英文关键词: Carbon deposition
; Cobalt catalyst
; Methane dry reforming
; Stability
; Support effect
; Surface oxidation
Scopus关键词: Activation energy
; Alumina
; Aluminum oxide
; Binary alloys
; Carbon dioxide
; Catalyst activity
; Catalytic reforming
; Cerium oxide
; Coal
; Cobalt
; Convergence of numerical methods
; Deposition
; Methane
; Silica
; Zirconia
; Carbon deposition
; Cobalt Catalyst
; Methane dry reforming
; Support effects
; Surface oxidations
; Magnesium compounds
英文摘要: The effect of different supports (Al2O3, CeO2, MgAl2O4, SiO2, and ZrO2) on the catalytic performance of an aluminum-incorporated cobalt catalyst in the dry reforming of methane (DRM) was investigated. DRM observations revealed the highest CH4 and CO2 conversion levels with CoAl/MgAl2O4. These levels decreased in the order: CoAl/MgAl2O4 > CoAl/Al2O3 > CoAl/ZrO2 > CoAl/CeO2 > CoAl/SiO2. Due to the proximity of the Co and Mg ionic radii, the cobalt species strongly interacted with MgAl2O4 resulting in the formation of a solid solution. The CH4/CO2 thermogravimetric results indicated that the performance of the CoAl/MgAl2O4 catalyst was superior to that of the other catalysts. This was attributed to the balance between the rates of carbon deposition from CH4 decomposition and surface oxidation from CO2 dissociation. In addition, the apparent activation energy on this catalyst (54.6kJ/mol) was much lower than that of CoAl/Al2O3 (77.5kJ/mol), indicating a marked improvement in CH4 reforming activity for CoAl/MgAl2O4. Overall, the characterization results revealed that the catalytic performance was influenced by the synergistic effect between CoAl and its support. © 2018 Published by Elsevier B.V. on behalf of Association of Polish Electrical Engineers (SEP). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111845
Appears in Collections: 气候减缓与适应
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作者单位: Center for Environment and Sustainable Resources, Korea Research Institute of Chemical Technology, Daejeon, 34114, South Korea
Recommended Citation:
Park J.-H.,Yeo S.,Chang T.-S.. Effect of supports on the performance of Co-based catalysts in methane dry reforming[J]. Journal of CO2 Utilization,2018-01-01,26