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题名: Remarkable improvement on the methane aromatization reaction: A highly selective and coking-resistant catalyst
作者: Ma, D;  Lu, Y;  Su, LL;  Xu, ZS;  Tian, ZJ;  Xu, Y;  Lin, LW;  Bao, XH
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2002-08-29
DOI: 10.1021/jp020166h
卷: 106, 期:34, 页:8524-8530
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: An effective way (without addition of any oxidative gases to the reactant) to suppress coke formation (by modification of the Mo/HZSM-5 catalyst) and thus to significantly improve the aromatic selectivity in the methane aromatization reaction is presented in this study. A greater yield of benzene and an enhanced durability of the catalyst when compared with the conventional Mo/HZSM-5 catalysts are observed. Multinuclear solid-state NMR, TPD, TPO, TG, and UV-Raman methods are applied to characterize and rationalize the structure-property relationship of the improved catalytic performance of the modified catalysts. From this work, we found that only a small fraction of tetrahedral framework aluminum, which corresponds to the Bronsted acid sites, is sufficient to accomplish the aromatization of the intermediates in methane aromatization reaction, while the superfluous strong Bronsted acid sites, which can be removed upon steaming treatment, are shown to be related with the aromatic carbonaceous deposits on the catalysts.
关键词[WOS]: MO-BASED CATALYSTS ;  MO/HZSM-5 CATALYSTS ;  NONOXIDATIVE CONVERSION ;  ZEOLITE CATALYSTS ;  HZSM-5 ZEOLITES ;  ACID SITES ;  MAS NMR ;  BENZENE ;  DEALUMINATION ;  SPECTROSCOPY
语种: 英语
WOS记录号: WOS:000177705200007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139109
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.Acad Sinica, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Ma, D,Lu, Y,Su, LL,et al. Remarkable improvement on the methane aromatization reaction: A highly selective and coking-resistant catalyst[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2002,106(34):8524-8530.
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