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题名: Study of coke deposition on Mo/HZSM-5 catalyst in methane dehydro-aromatization under non-oxidative conditions
作者: Liu, HM;  Li, T;  Tian, BL;  Xu, YD
关键词: methane ;  dehydro-aromatization ;  Mo/HZSM-5 zeolite ;  temperature-programmed reaction ;  coke deposition
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2001-07-01
卷: 22, 期:4, 页:373-376
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: The results of TPH (temperature-programmed hydrogenation), TPCO2 (temperature-programmed CO2 reaction) and TPO (temperature-programmed oxidation) for the 6% Mo/HZSM-5 catalyst after TPSR (temperature-programmed surface reaction) illustrated that various coke deposits are formed during the reaction of methane dehydro-aromatization in the absence of oxygen. The TPO profiles of the coked catalyst showed two peaks. The TPH experiment resulted in the decrease of the area of the peak at high temperature, but had no effect on the area of the peak at low temperature. Meanwhile, the TPCO2 experiment exhibited obvious decrease of the both peak areas. On the basis of TPSR, TPH and TPCO2 experiments and the corresponding TG (thermogravimetry), the quantitative analysis of the coke amount was proceeded. The results showed that there are three types of coke deposits. One can mainly react with H-2, the other can be eliminated by CO2, and the third one may exist in Mo2C, an active species for the title reaction.
关键词[WOS]: DEHYDROGENATION ;  BENZENE ;  SURFACE
语种: 英语
WOS记录号: WOS:000170470800015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138962
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:
Liu, HM,Li, T,Tian, BL,et al. Study of coke deposition on Mo/HZSM-5 catalyst in methane dehydro-aromatization under non-oxidative conditions[J]. CHINESE JOURNAL OF CATALYSIS,2001,22(4):373-376.
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