DOI: 10.1016/j.jcou.2019.01.003
Scopus记录号: 2-s2.0-85059824827
论文题名: Metal-oxide promoted Ni/Al 2 O 3 as CO 2 methanation micro-size catalysts
作者: Guilera J. ; Del Valle J. ; Alarcón A. ; Díaz J.A. ; Andreu T.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2019
卷: 30 起始页码: 11
结束页码: 17
语种: 英语
英文关键词: Biogas
; Carbon dioxide
; Catalyst
; Power-to-Gas
; Synthetic natural gas
Scopus关键词: Aluminum compounds
; Biogas
; Carbon dioxide
; Catalysts
; Cerium oxide
; Heat transfer
; Hydrogenation
; Lanthanum oxides
; Methanation
; Natural gas
; Nickel
; Nickel compounds
; Samarium compounds
; Zirconia
; Catalytic performance
; Microstructured reactors
; Power to gas
; Promoted catalysts
; Reaction temperature
; Renewable electricity
; Synthetic natural gas
; Transfer capacities
; Catalyst activity
英文摘要: The Power-to-Gas concept has the challenge to convert the excess of renewable electricity to synthetic natural gas, composed mainly by methane, through CO 2 methanation. The superior heat transfer capacity of micro-structured reactors offers a suitable alternative for an efficient control of the reaction temperature. In the present work, the strategy of adding large amount of metal oxide promoters (15 wt.%) to nickel supported on micro-size catalysts (d p = 400-500 μm) is presented. The addition of CeO 2 , La 2 O 3 , Sm 2 O 3 , Y 2 O 3 and ZrO 2 was clearly beneficial, as the corresponding metal-oxide promoted catalysts exhibited higher catalytic performance than Ni/Al 2 O 3 and the commercial reference Meth ® 134 (T = 200-300 °C, P = 5 bar·g). This increase of catalytic activity is attributed to the higher amount of CO 2 adsorbed on the catalyst. Among the selected promoters, La 2 O 3 showed the highest catalytic activity (X CO2 =+20% at 300 °C) due to the enhancement of nickel reducibility, nickel dispersion and the presence of moderate basic sites. In addition, Ni-La 2 O 3 /Al 2 O 3 was stable for one week, while the unpromoted catalyst exhibited a slight decline in its activity. Accordingly, the technical catalyst proposed in this study could be used directly in compact reactors for CO 2 methanation with much higher activity than the commercial reference. © 2019 Journal of CO2 Utilization. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117304
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Guilera J.,Del Valle J.,Alarcón A.,et al. Metal-oxide promoted Ni/Al 2 O 3 as CO 2 methanation micro-size catalysts[J]. Journal of CO2 Utilization,2019-01-01,30