DOI: 10.1016/j.jcou.2016.07.005
Scopus记录号: 2-s2.0-84978763096
论文题名: Promotion effect between Ni and Co aerogel catalysts in CH4 reforming with CO2 and O2
作者: Yang T. ; Chen W. ; Chen L. ; Liu W. ; Zhang D.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 130
结束页码: 137
语种: 英语
英文关键词: Aerogel catalyst
; Carbon species
; CH4 reforming
; Heterogeneous mixture
; Promotion effect
Scopus关键词: Aerogels
; Carbon dioxide
; Catalysts
; Catalytic oxidation
; Metals
; Mixtures
; Nickel
; Particle size
; Carbon species
; Catalytic performance
; Heterogeneous mixtures
; Oxygen species
; Promotion effects
; Spectrum techniques
; Spent catalyst
; Theoretical values
; Catalytic reforming
英文摘要: Ni-MgO/Al2O3 (Ni-A) and Co-MgO/Al2O3 (Co-A) aerogel catalysts are mechanically mixed with different weight ratios and their catalytic performances in CH4 reforming with CO2 and O2 are investigated. The catalyst mixtures showed higher CH4 conversions than those theoretical values predicted from the mixture law, indicating an interesting promotion effect between them. The catalysts are characterized by XRD, BET, SEM, TG/DTG and Raman spectrum techniques. It is disclosed that the reduced Co-A can be easily oxidized during the reaction, but Ni-A can prevent its oxidation during the reaction, which enables Co-A in the mixture to maintain its catalytic reforming ability. CH4 conversion is raised dramatically for ∼50% as comparing the catalysts mixtures with Co-A. On the other hand, the amount of carbon can be decreased by ∼17 wt.% with the increase of Co-A's weight ratio in the mixture. Meanwhile, carbon species on the spent catalysts turn from inactive graphite to active carbon species. This could be attributed to the strong affinity of Co-A for oxygen species and the decreased active metal particle size in the mixtures. © 2016 Elsevier Ltd. All rights reserved. 资助项目: National Natural Science Foundation of China
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52855
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
Recommended Citation:
Yang T.,Chen W.,Chen L.,et al. Promotion effect between Ni and Co aerogel catalysts in CH4 reforming with CO2 and O2[J]. Journal of CO2 Utilization,2016-01-01,16