DOI: 10.1016/j.jcou.2014.02.001
Scopus记录号: 2-s2.0-84896522017
论文题名: The effects of partial substitution of Ni by Zn in LaNiO3 perovskite catalyst for methane dry reforming
作者: Moradi G.R. ; Rahmanzadeh M. ; Khosravian F.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2014
卷: 6 起始页码: 7
结束页码: 11
语种: 英语
英文关键词: Dry reforming
; Perovskite
; Promoter
Scopus关键词: Atmospheric pressure
; Carbon dioxide
; Catalysts
; Lanthanum alloys
; Methane
; Nickel
; Perovskite
; Sol-gels
; X ray diffraction
; Dry reforming
; Methane dry reforming
; Perovskite structures
; Perovskite type oxides
; Promoter
; Temperature-programmed reduction
; Zinc
英文摘要: A series of LaNi1-xZnxO3 (x = 0.2, 0.4, 0.6, 0.8 and 1.0) perovskite-type oxides were synthesized via sol-gel related method by using propionic acid as solvent. The reaction was performed under continuous flow of feed stream which included CO2, CH4 and helium as diluting agent, under atmospheric pressure. The prepared catalysts were characterized by X-ray diffraction (XRD) and temperature-programmed reduction (TPR). The results showed that the conversion rates of CO2 and CH4 increased as Ni was partially substituted by Zn. Considering the mentioned rates, among these catalysts, LaNi0.8Zn 0.2O3 was the most effective catalyst. TPR results showed that partial substitution of Ni by Zn increased the temperatures of reduction peaks, leading to the more stable perovskite structure compared to LaNiO 3 structure. It indicates that Zn stabilizes the perovskite structure. Also, TGA results showed that LaNi0.8Zn 0.2O3 was more resistant to coke formation in comparison with LaNiO3 during 75 h time on stream stability test. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53028
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
Recommended Citation:
Moradi G.R.,Rahmanzadeh M.,Khosravian F.. The effects of partial substitution of Ni by Zn in LaNiO3 perovskite catalyst for methane dry reforming[J]. Journal of CO2 Utilization,2014-01-01,6