CAS OpenIR
Carbon deposition and catalytic deactivation during CO2 reforming of CH4 over Co/MgO catalyst
Li, JW; Li, J; Zhu, QS; Li, Jianwei; Li, Jun; Zhu, Qingshan
2018
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume26Issue:11Pages:2344
Abstract

The deactivation mechanism of Co/MgO catalyst for the reforming of methane with carbon dioxide was investigated. The conversion of CH4 displayed a significant decrease in the initial stage caused by carbon deposition. There were two types of cokes, carbon nanotubes (CNTs) and carbon nano-onions (CNOs). The number of the CNO layers that coated on the surface of Co nanoparticles (NPs) increased rapidly in the initial reforming time, which was responsible for the deactivation of the Co/MgO catalyst. The deposition of CNOs was attributed to the oxidation of Co NPs. Therefore, the deactivation of the Co/MgO catalyst was originated from the first oxidization of the Co NPs into Co3O4 by O species (OH intermediate, CO2, H2O) during the reforming reaction, which accelerates the formation of coke that blocked the active metal, thus led to catalyst deactivation. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

KeywordCo/mgo Supported Cobalt Catalyst Ch4 Reforming Solid-solution Catalysts Carbon Deposition Methane Decomposition Co Oxidization Reaction-mechanism Rich Hydrogen Performance Temperature Ni Stability Co/sio2
SubtypeArticle
DOI10.1016/j.cjche.2018.05.025
WOS IDWOS:000452428700012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26712
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Li, JW,Li, J,Zhu, QS,et al. Carbon deposition and catalytic deactivation during CO2 reforming of CH4 over Co/MgO catalyst[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2018,26(11):2344.
APA Li, JW,Li, J,Zhu, QS,Li, Jianwei,Li, Jun,&Zhu, Qingshan.(2018).Carbon deposition and catalytic deactivation during CO2 reforming of CH4 over Co/MgO catalyst.CHINESE JOURNAL OF CHEMICAL ENGINEERING,26(11),2344.
MLA Li, JW,et al."Carbon deposition and catalytic deactivation during CO2 reforming of CH4 over Co/MgO catalyst".CHINESE JOURNAL OF CHEMICAL ENGINEERING 26.11(2018):2344.
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