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Combined Methane CO2 Reforming and Dehydroaromatization for Enhancing the Catalyst Stability
Yao, Songdong; Gu, Lijun; Sun, Changyong; Li, Juan; Shen, Wenjie
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
2009-01-21
DOI10.1021/ie8014582
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
关键词[WOS]MO/HZSM-5 CATALYST ; NONOXIDATIVE CONDITIONS ; DEHYDRO-AROMATIZATION ; CONVERSION ; BENZENE ; SITES ; DEACTIVATION ; PERFORMANCE ; NAPHTHALENE ; MO/H-ZSM-5
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.
语种英语
WOS记录号WOS:000262677900020
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141548
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
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.
APA Yao, Songdong,Gu, Lijun,Sun, Changyong,Li, Juan,&Shen, Wenjie.(2009).Combined Methane CO2 Reforming and Dehydroaromatization for Enhancing the Catalyst Stability.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,48(2),713-718.
MLA Yao, Songdong,et al."Combined Methane CO2 Reforming and Dehydroaromatization for Enhancing the Catalyst Stability".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 48.2(2009):713-718.
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