DOI: 10.1016/j.jcou.2017.05.013
Scopus记录号: 2-s2.0-85019720395
论文题名: Characteristics of activated carbon modified with alkaline KMnO4 and its performance in catalytic reforming of greenhouse gases CO2/CH4
作者: Zhang G. ; Sun Y. ; Zhao P. ; Xu Y. ; Su A. ; Qu J.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 20 起始页码: 129
结束页码: 140
语种: 英语
英文关键词: Activated carbon
; Methane reforming
; Potassium permanganate
; Surface modification
Scopus关键词: Activated carbon
; Alkalinity
; Carbon dioxide
; Catalyst activity
; Greenhouse gases
; Manganites
; Methane
; Potassium
; Reforming reactions
; Specific surface area
; Surface structure
; Surface treatment
; Synthesis gas manufacture
; Carbon dioxide reforming of methane
; Methane reforming
; Modified activated carbons
; Oxygen containing groups
; Oxygen-containing functional groups
; Potassium permanganate
; Potassium permanganate oxidations
; Surface structure analysis
; Catalytic reforming
英文摘要: Different potassium permanganate oxidation processes were used to modify activated carbon, and then surface structure and chemical properties of modified activated carbon with different preparation methods as well as their influences on carbon dioxide reforming of methane were studied. BET and SEM surface structure analysis indicated that after modification with potassium permanganate under alkaline condition, specific surface area of activated carbon increased, microspore and mesoporous capacities enlarged, but the pore diameter of activated carbon slightly reduced. XPS and FT-IR characterization indicated that after modification with potassium permanganate under alkaline condition, acid oxygen-containing functional groups dropped and new alkaline active substances like ionic OH- and manganite were generated on the activated carbon surface. Increased specific surface area and pore capacity of activated carbon, reduced acid oxygen-containing groups and generated alkaline active substances like ionic OH- and manganite exerted significant influences on methane activation and carbon dioxide reforming of methane. Under alkaline condition, the activity of the potassium permanganate modified activated carbon and reforming conversion slightly increased because of interaction between alkaline functional groups and acid carbon dioxide; In the meantime, newly generated ionic OH- on the surface and manganite participated in reforming reaction, which also improved activity of potassium permanganate-modified activated carbon for carbon dioxide reforming of methane. Under acid condition, CO2-CH4 reforming conversion and catalyst activity decreased because of interaction between acidic functional groups and acid carbon dioxide. © 2017 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52717
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Zhang G.,Sun Y.,Zhao P.,et al. Characteristics of activated carbon modified with alkaline KMnO4 and its performance in catalytic reforming of greenhouse gases CO2/CH4[J]. Journal of CO2 Utilization,2017-01-01,20