DOI: 10.1016/j.jcou.2017.07.011
Scopus记录号: 2-s2.0-85025597379
论文题名: Ni/M-Al2O3 (M=Sm, Ce or Mg) for combined steam and CO2 reforming of CH4 from coke oven gas
作者: Kim A.R. ; Lee H.Y. ; Cho J.M. ; Choi J.-H. ; Bae J.W.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 211
结束页码: 218
语种: 英语
英文关键词: coke oven gas
; coke resistance
; Combined steam and CO2 reforming with CH4 (CSCR)
; Nickel-based catalyst
; Sm promoter
Scopus关键词: Agglomeration
; Carbon dioxide
; Catalyst activity
; Catalysts
; Catalytic reforming
; Cerium
; Chemical bonds
; Coke
; Coke ovens
; Crystallites
; Deposition
; Electronegativity
; Industrial ovens
; Nickel
; Samarium
; Steelmaking
; Activation of CO2
; Aggregation phenomena
; Catalytic performance
; Coke oven gas
; Coke resistances
; Combined steam and CO<sub>2</sub> reforming with CH<sub>4</sub> (CSCR)
; Nickel based catalysts
; Nickel nanoparticles
; Steam reforming
英文摘要: Effects of structural promoters such as Sm, Ce, Mg metal oxides on the Ni/M-Al2O3 catalysts (where M = Sm, Ce, or Mg) were verified to elucidate different catalytic activity for a combined steam and CO2 reforming reaction with CH4 (CSCR) using H2-rich coke oven gases generated from steel industry. The enhanced catalytic performance and stability were explained in terms of the variations of surface basic sites with different aggregation phenomena of active nickel crystallites and resistances for a coke formation. The most efficient Sm promoter having a high electronegativity and basic property on the Ni/M-Al2O3 was found to largely suppress a coke deposition and less aggregation of active nickel crystallites by forming the strongly interacted nickel nanoparticles with an enhanced basic sites on the Sm-modified Al2O3. In addition, a larger amount of basic sites on the Ni/Sm-Al2O3 were responsible for a less coke deposition and best catalytic performances in terms of the conversions of CH4 and CO2. These positive effects of Sm promoter were also attributed to a relatively easy activation of CO2 and the formation of the strongly interacted smaller nickel crystallites on the newly formed basic perovskite-like SmAlO3 structures or segregated Sm2O3 species. © 2017 Elsevier Ltd. All rights reserved. 资助项目: Korea Evaluation Institute of Industrial Technology
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52641
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Kim A.R.,Lee H.Y.,Cho J.M.,et al. Ni/M-Al2O3 (M=Sm, Ce or Mg) for combined steam and CO2 reforming of CH4 from coke oven gas[J]. Journal of CO2 Utilization,2017-01-01,21