DOI: 10.1016/j.jcou.2017.02.013
Scopus记录号: 2-s2.0-85013849239
论文题名: Characterization of Ca-promoted Co/AC catalyst for CO2-CH4 reforming to syngas production
作者: Zhang G. ; Zhao P. ; Xu Y. ; Qu J.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 18 起始页码: 326
结束页码: 334
语种: 英语
英文关键词: Ca-promoted
; Co/AC catalyst
; CO2
; Cobalt
; Methane reforming
Scopus关键词: Calcium
; Carbon dioxide
; Catalysts
; Catalytic reforming
; Chemical reactors
; Chemical stability
; Cobalt
; Gas adsorption
; Methane
; Reforming reactions
; Sintering
; Synthesis gas
; Synthesis gas manufacture
; X ray photoelectron spectroscopy
; Carbon dioxide adsorption
; Carbon dioxide reforming of methane
; Impregnation methods
; Methane reforming
; Physicochemical characteristics
; Preparation method
; Reforming Catalyst
; Synthesis gas production
; Catalyst activity
英文摘要: Ca-promoted Co-based/AC catalysts prepared with various Ca/Co ratios by using impregnation method were applied to synthesis gas production via CO2-CH4 reforming reaction. The influences of preparation methods on the physico-chemical characteristics, catalytic activities and stability of the catalysts were examined in a fixed-bed reactor. The basic physico-chemical characters of prepared catalysts were studied by the H2-TPR, XRD and XPS and BET methods. H2-TPR, XRD and XPS results confirmed that cobalt dispersion improving, the interaction between cobalt and calcium intensify and the sintering of cobalt mitigation is due to calcium addition. Results of XRD and H2-TPR also show that there was a new crystal substance Ca3Co2O6 formed, which has most strong influence on the catalytic activity enhancing and the anti-coking ability of CO2-CH4 reforming catalyst. Through the SEM analysis of the used catalyst after CO2-CH4 reforming, the Co-Ca/AC catalysts were also confirmed to show better sinter-stability. In addition, the addition of calcium can improve the carbon dioxide adsorption properties, so that it is easy to eliminate carbon deposited on the surface of the catalyst by gasification. In particular, the catalyst with 14 wt.% of calcium addition revealed a good activity and anti-sintering ability in CO2-CH4 reforming. On the basis of experimental observations and literature reviewed, a simple carbon dioxide reforming of methane into syngas mechanism over a cobalt/AC catalyst promoted by Ca is proposed. © 2017 Published by Elsevier B.V. 资助项目: National Natural Science Foundation of China
; National Natural Science Foundation of China
; 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/52782
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
Recommended Citation:
Zhang G.,Zhao P.,Xu Y.,et al. Characterization of Ca-promoted Co/AC catalyst for CO2-CH4 reforming to syngas production[J]. Journal of CO2 Utilization,2017-01-01,18