DOI: 10.1016/j.jcou.2018.04.011
Scopus记录号: 2-s2.0-85045560804
论文题名: Methane dry reforming over Ni/Mg-Al-O: On the significant promotional effects of rare earth Ce and Nd metal oxides
作者: Fang X. ; Zhang J. ; Liu J. ; Wang C. ; Huang Q. ; Xu X. ; Peng H. ; Liu W. ; Wang X. ; Zhou W.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 25 起始页码: 242
结束页码: 253
语种: 英语
英文关键词: Coking resistance
; Methane dry reforming
; Mg-Al-O support
; Ni-based catalysts
; Rare earth promotion
Scopus关键词: Catalysts
; Cerium
; Cerium oxide
; Ionization of gases
; Magnesia
; Methane
; Neodymium compounds
; Nickel
; Nickel compounds
; Oxygen
; pH
; Rare earths
; Coking resistance
; Efficient catalysts
; Methane dry reforming
; Ni-based catalyst
; Ni/Al2O3 catalyst
; Promotional effect
; Reaction performance
; Stable catalysts
; Aluminum compounds
英文摘要: In this study, with the purpose to obtain more efficient catalysts for methane dry reforming, an Mg-Al-O support having excess MgO and higher alkalinity than pure MgAl2O4 spinel support have been designed and used to prepare Ni/Mg-Al-O catalysts. XRD has demonstrated that this support consists of both MgO and MgAl2O4 spinel phases. As a result, Ni/Mg-Al-O displays better reaction performance than Ni/MgAl2O4 and Ni/Al2O3 catalysts. With the promotion by Ce and Nd oxides, the Ni dispersion and the surface active oxygen amount can be significantly improved, which results in more active and stable catalysts with also significantly improved coking resistance. It is revealed that the active metallic Ni surface area, surface alkalinity and active oxygen abundance are the major factors deciding the reaction performance of the Ni/Mg-Al-O catalysts. Because of the optimal concerted action of these factors, Ni-Ce/Mg-Al-O, the sample promoted by ceria, displays the best reaction performance among all the catalysts. © 2018 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/111921
Appears in Collections: 气候减缓与适应
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作者单位: College of Chemistry, Nanchang University, Nanchang, Jiangxi, 330031, China; College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China; Jiangxi Baoan New Material Technology Corporation, LTD, Ping Xiang, Jiangxi, 337000, China; College of Pharmacy, Nanchang University, Nanchang, Jiangxi, 330031, China; Jiangxi Golden Century Advanced Materials Co. Ltd., Nanchang, Jiangxi, 330031, China
Recommended Citation:
Fang X.,Zhang J.,Liu J.,et al. Methane dry reforming over Ni/Mg-Al-O: On the significant promotional effects of rare earth Ce and Nd metal oxides[J]. Journal of CO2 Utilization,2018-01-01,25