DOI: 10.1016/j.jcou.2018.04.023
Scopus记录号: 2-s2.0-85047148250
论文题名: CO2 hydrogenation to methane over mesoporous Co/SiO2 catalysts: Effect of structure
作者: Zhou G. ; Liu H. ; Xing Y. ; Xu S. ; Xie H. ; Xiong K.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 221
结束页码: 229
语种: 英语
英文关键词: Carbon dioxide
; Catalytic hydrogenation
; Mesoporous Co/SiO2 catalysts
; Methanation
; Structure
Scopus关键词: Carbon dioxide
; Hydrogenation
; Mesoporous materials
; Methanation
; Pore size
; Reaction rates
; Silica
; Structure (composition)
; Catalytic hydrogenation
; CO2 hydrogenation
; Crystallinities
; Crystallization temperature
; Different structure
; Impregnation methods
; Mesoporous
; Physicochemical property
; Catalyst selectivity
英文摘要: The mesoporous Co/SiO2 catalysts with 10wt.% Co loading were prepared by grind-impregnation method for CO2 hydrogenation, and the mesoporous SiO2 materials with different structures were used as the supports. The physicochemical properties of the Co/SiO2 catalysts were characterized by TEM, BET, H2-TPR, XRD, and CO2-TPD. The results indicate that the pore size, specific surface area, and the Co° species crystallinity of the Co/SiO2 catalyst increase with increasing crystallization temperature of preparing SiO2 support. The Co/SiO2 catalyst has the best CO2 adsorption property when SiO2 support is prepared at the crystallization temperature of 100°C. The CO2 reaction rate (CO2 conversion) of the Co/SiO2 catalysts is as follows: CK100>CK080>CK120>CK060>CK140>CK040, and the CH4 selectivity follows the order: CK100>CK080>CK120>CK140>CK060>CK040, accompanied by a certain amount of by-product CO molecules. At 360°C, the CO2 reaction rate (CO2 conversion) of the CK100 catalyst is up to 3.29×10-5mol/gcat/s (44.3%), the CH4 and CO selectivity are 86.5% and 13.5%, respectively. © 2018 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111872
Appears in Collections: 气候减缓与适应
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作者单位: Department of Materials Science and Engineering, Chongqing Technology and Business University, Chongqing, 400067, China; Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing, 400067, China
Recommended Citation:
Zhou G.,Liu H.,Xing Y.,et al. CO2 hydrogenation to methane over mesoporous Co/SiO2 catalysts: Effect of structure[J]. Journal of CO2 Utilization,2018-01-01,26