DOI: 10.1016/j.jcou.2017.11.002
Scopus记录号: 2-s2.0-85034038428
论文题名: Effect of Zn promoter on catalytic activity and stability of Co/ZrO2 catalyst for dry reforming of CH4
作者: Park J.-H. ; Yeo S. ; Kang T.-J. ; Shin H.-R. ; Heo I. ; Chang T.-S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 23 起始页码: 10
结束页码: 19
语种: 英语
英文关键词: Co catalyst
; Co-Zn alloy
; Deactivation by CO2
; Dry reforming of methane
; Zn addition
Scopus关键词: Binary alloys
; Carbon dioxide
; Catalysts
; Catalytic oxidation
; Catalytic reforming
; Cobalt alloys
; Methane
; Oxidation
; Zinc
; Zinc alloys
; Zirconium alloys
; Catalyst stability
; Catalytic performance
; Co catalysts
; Deactivation by CO2
; Dry reforming-of-methane
; Oxidation rates
; Promoted catalysts
; Zn alloys
; Catalyst activity
英文摘要: The effects of Zn addition on the catalytic performance of CoZn(x)/ZrO2 catalyst (x = 0–3 wt.%) in the dry reforming of methane were investigated. The presence of an appropriate amount of Zn produced a noticeable improvement in the catalytic performance. The addition of Zn to a Co/ZrO2 catalyst, at a ratio of up to 2 wt.%, had a positive effect on the catalyst stability, whereas further addition beyond this threshold had the opposite effect. The XPS and TGA results indicated that the surface Co species on both the Co/ZrO2 and CoZn(2)/ZrO2 catalysts were oxidized by the CO2. However, the oxidation rate of the two catalysts differed; the Co/ZrO2 catalyst oxidized faster and to a greater degree than the CoZn(2)/ZrO2 catalyst. Therefore, the Co/ZrO2 catalyst was rapidly deactivated due to the loss of active sites by the oxidation, whereas the Zn−promoted catalyst exhibited a more stable catalytic activity as the oxidation of Co was prevented by formation of a Co−Zn alloy. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111993
Appears in Collections: 气候减缓与适应
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作者单位: Greenhouse Gas Resources Research Group, Korea Research Institute of Chemical Technology, Daejeon, 34114, South Korea; Green Chemistry and Environmental Biotechnology, University of Science and Technology, South Korea
Recommended Citation:
Park J.-H.,Yeo S.,Kang T.-J.,et al. Effect of Zn promoter on catalytic activity and stability of Co/ZrO2 catalyst for dry reforming of CH4[J]. Journal of CO2 Utilization,2018-01-01,23