DOI: 10.1016/j.jcou.2018.05.024
Scopus记录号: 2-s2.0-85047759950
论文题名: Insight towards the role of ceria-based supports for reverse water gas shift reaction over RuFe nanoparticles
作者: Panaritis C. ; Edake M. ; Couillard M. ; Einakchi R. ; Baranova E.A.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 350
结束页码: 358
语种: 英语
英文关键词: Iron
; Nanoparticles
; Oxygen conducting ceramic
; Reverse water-gas shift (RWGS)
; Ruthenium
Scopus关键词: Binary alloys
; Carbon
; Carbon dioxide
; Catalyst activity
; Catalyst selectivity
; Catalyst supports
; Ceramic materials
; Cerium oxide
; Chemical shift
; Gadolinium compounds
; Gas emissions
; Greenhouse gases
; Iron
; Nanoparticles
; Oxygen
; Packed beds
; Ruthenium
; Yttria stabilized zirconia
; Yttrium oxide
; Zirconia
; Catalytic conversion
; Metal-support interactions
; Packed bed reactor
; Reverse water gas shift
; Reverse water-gas shift reaction
; Samarium doped cerias
; Steady-state condition
; Yttria-stabilized zirconias (YSZ)
; Water gas shift
英文摘要: Utilization of CO2 through the reverse water gas shift (RWGS) reaction is a promising solution in managing greenhouse gas emissions. Here, we used the RWGS reaction to evaluate the catalytic conversion of CO2 over Ru-Fe nanoparticles supported on samarium-doped ceria (SDC) support. Catalysts of different RuxFe100-x compositions (x= 100, 80, 45, 20, 0at.%) have been studied under steady-state conditions in a packed bed reactor in the temperature range 300-800°C to determine their catalytic activity and selectivity towards CO. The metal-support interaction (MSI) effect for SDC was evaluated to determine its promotional behavior for the RWGS reaction. The catalyst was characterized using TEM, TGA, and ICP-ES techniques. Among all investigated catalysts, Ru45Fe55/SDC (2wt.%) displayed the overall best activity and CO selectivity. A stability test of 100h at 650°C confirmed an excellent stability of the Ru45Fe55/SDC catalyst. Overall, the use of Ru45Fe55/SDC (2wt.%) is a promising catalyst in the utilization of CO2, reaching a maximum CO yield of ∼47.5% at 800°C and 100% CO selectivity above 500°C. Furthermore, Ru45Fe55 (2wt.%) nanoparticles were deposited on un-doped CeO2 and doped ceria: Gd-CeO2, Y2O3-CeO2, as well as yttria-stabilized zirconia (YSZ) and carbon supports. Contrary to carbon support, all catalysts containing oxygen conducting-ceramic supports displayed 100% selectivity to CO at temperatures above 600°C, which can be attributed to the synergistic relationship between Ru-Fe nanoparticles being promoted through the MSI and thermally induced migration of promoting ionic species (Oδ-) from oxygen conducting ceramics to the nanoparticles. © 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/111852
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemical and Biological Engineering, Centre for Catalysis Research and Innovation (CCRI), University of Ottawa, 161 Louis-Pasteur, Ottawa, ON K1N 6N5, Canada; National Research Council of Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada
Recommended Citation:
Panaritis C.,Edake M.,Couillard M.,et al. Insight towards the role of ceria-based supports for reverse water gas shift reaction over RuFe nanoparticles[J]. Journal of CO2 Utilization,2018-01-01,26