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题名: Aromatization of methane in the absence of oxygen over Mo-based catalysts supported on different types of zeolites
作者: Zhang, CL;  Li, SA;  Yuan, Y;  Zhang, WX;  Wu, TH;  Lin, LW
关键词: zeolite structure ;  methane aromatization ;  MoO3 ;  benzene ;  shape-selective function
刊名: CATALYSIS LETTERS
发表日期: 1998
卷: 56, 期:4, 页:207-213
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: The catalytic performance of Mo-based catalysts supported on various zeolites has been studied for methane aromatization in the absence of oxygen in a fixed-bed continuous-flow quartz reactor, and their catalytic properties are correlated with features of zeolite structure. It was found that H-type silica-alumina zeolites, such as ZSM-5, ZSM-8, ZSM-11 and beta possessing two-dimensional structure and pore diameter equaling the dynamic diameter of a benzene molecule (about 6 Angstrom) simultaneously, are fine supports for methane activation and aromatization catalysts. Among them, MoO3/H-ZSM-11 has the best activity and stability; for instance, a methane conversion of 8.0% and selectivity higher than 90% was obtained at 973 K. The catalytic performance of MoO3/H-ZSM-8 is somewhat lower than that of MoO3/H-ZSM-5, while activity of MoO3/H-beta is lower than that of MoO3/H-ZSM-8. Catalysts supported on H-MCM-41 and H-SAPO-34 exhibit low activity for methane aromatization and those supported on H-MOR, H-X and H-Y give only a little amount of ethylene. Over MoO3/H-SAPO-5 and MoO3/H-SAPO-11 no hydrocarbons were detected.
关键词[WOS]: MO/HZSM-5 CATALYSTS ;  DEHYDROGENATION ;  BENZENE ;  CONVERSION ;  ACTIVATION
语种: 英语
WOS记录号: WOS:000078510300008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138468
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.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, CL,Li, SA,Yuan, Y,et al. Aromatization of methane in the absence of oxygen over Mo-based catalysts supported on different types of zeolites[J]. CATALYSIS LETTERS,1998,56(4):207-213.
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