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题名: Combined Methane CO2 Reforming and Dehydroaromatization for Enhancing the Catalyst Stability
作者: Yao, Songdong1;  Gu, Lijun1;  Sun, Changyong1;  Li, Juan1;  Shen, Wenjie1
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2009-01-21
DOI: 10.1021/ie8014582
卷: 48, 期:2, 页:713-718
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The combination of methane dry reforming (MDR) and methane dehydroaromatization (MDA) effectively improved the stability of the MDA catalyst. By using integrated Mo/Al2O3 and Mo/MCM-49 catalysts at 1023 K, the conversion of methane only decreases slowly to 8.2% at 34 h, whereas it decreases rapidly to 3.5% even at 15 h for the MDA reaction. This promotion effect is caused by the coexistence of CO and H-2 formed by methane CO2 reforming, which significantly reduces the coke formation. CO may reduce the coke deposited on the Bronsted acidic sites, which is mainly responsible for the deactivation, by dissociating on the surface of the Mo/MCM-49 catalyst with the formation of active oxygen species. Hydrogen eliminates the coke through hydrogenation, leading to a slow coke deposition rate on the surface of the catalyst. As a result, the deposition rate of the coke associated with the Bronsted acid sites in the combined reaction system with the coexistence of CO and H-2 is much lower than that of the MDA reaction, showing a very slow deactivation pattern.
关键词[WOS]: MO/HZSM-5 CATALYST ;  NONOXIDATIVE CONDITIONS ;  DEHYDRO-AROMATIZATION ;  CONVERSION ;  BENZENE ;  SITES ;  DEACTIVATION ;  PERFORMANCE ;  NAPHTHALENE ;  MO/H-ZSM-5
语种: 英语
WOS记录号: WOS:000262677900020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141548
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yao, Songdong,Gu, Lijun,Sun, Changyong,et al. Combined Methane CO2 Reforming and Dehydroaromatization for Enhancing the Catalyst Stability[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2009,48(2):713-718.
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