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题名: Methane aromatization on Re/HZSM-5 system under non-oxygen condition
作者: Su, LL;  Ma, D;  Liu, XM;  Xu, YD;  Bao, XH
关键词: methane ;  aromatization ;  rhenium ;  molybdenum ;  HZSM-5 zeolite ;  supported catalyst
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2002
卷: 23, 期:1, 页:41-45
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Re/HZSM-5 is also a better catalyst for methane aromatization compared with Mo/HZSM-5 catalyst. The best Re loading is 10%. The original performance of Re/HZSM-5 is much better than Mo/HZSM-5, but its lifetime is much shorter than the latter. The acidity of the catalyst, the change of framework aluminum after impregnation of Re species and the reduction capacity of Re/HZSM-5 were investigated by using NH3-TPD, MAS NMR and H-2-TPR. The results indicated that the acidity of the catalyst also plays a key role in the reaction, and the catalytic performance of the catalyst is probably proportional to its acidity. But it is not that the stronger the acidity is and the more the amount of acid sites and the better the performance of the catalyst. After impregnation of Re, the metal species interacts with framework aluminum intensively and causes the dealumination of the catalyst. Re/HZSM-5 tends to be reduced by H-2 at lower temperature compared with Mo/HZSM-5, and the active species after reduction is singleness.
关键词[WOS]: MO-BASED CATALYSTS ;  MAS NMR ;  MO/HZSM-5 ;  BENZENE ;  DEHYDROGENATION ;  TRANSFORMATION ;  NAPHTHALENE ;  ZEOLITES
语种: 英语
WOS记录号: WOS:000173814100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139228
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:
Su, LL,Ma, D,Liu, XM,et al. Methane aromatization on Re/HZSM-5 system under non-oxygen condition[J]. CHINESE JOURNAL OF CATALYSIS,2002,23(1):41-45.
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