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题名: Hydrothermal post-synthesis of HZSM-5 zeolite to enhance the coke-resistance of Mo/HZSM-5 catalyst for methane dehydroaromatization reaction: Reconstruction of pore structure and modification of acidity
作者: Song, Y.;  Sun, C.;  Shen, W.;  Lin, L.
通讯作者: 申文杰 ;  林励吾
关键词: hydrothermal post-synthesis ;  Al(NO3)(3) aqueous solution ;  HZSM-5 zeolite ;  methane dehydroarornatization
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2007-02-07
DOI: 10.1016/j.apcata.2006.10.037
卷: 317, 期:2, 页:266-274
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 501
产权排名: 2;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: Hydrothermal post-synthesis of a commercial HZSM-5 zeolite in Al(NO3)(3) aqueous solution resulted in the creation of a uniform microporous network and the formation of Bronsted acid sites with suitable acidic strengths through the dynamic extraction and incorporation of aluminum species between the solution and the framework. NMR and N-2 adsorption-desorption isotherms measurements revealed that a dynamic extraction and incorporation of aluminum from the framework occurred during the post-synthesis treatment. XRD, XP spectra and TPR measurements of the resulting Mo/HZSM-5 catalyst indicated that the dispersion of Mo species was greatly promoted over the post-synthesized HZSM-5 zeolite, significantly facilitating the migration of Mo species into the channels. As a result, the Mo/HZSM-5 catalyst showed rather high methane conversion and selectivity of aromatics by effectively inhibiting the formation of coke during the methane dehydroaromatization reaction. Comparatively, the Mo/HZSM-5 catalyst, where the HZSM-5 zeolite was obtained by conventional hydrothermal post-synthesis, exhibited lower methane conversion and heavy coke deposits, apparently due to the substantial loss of the Bronsted acid sites and the creation of secondary pores. (c) 2006 Elsevier B.V All rights reserved.
关键词[WOS]: NONOXIDATIVE CONDITIONS ;  MOLYBDENUM CATALYSTS ;  AROMATIZATION ;  CONVERSION ;  BENZENE ;  MO ;  DEHYDROCONDENSATION ;  ZSM-5 ;  CO2 ;  DEALUMINATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000243831600017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98903
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, Liaoning, Peoples R China
2.Shantou Univ, Dept Chem, Shantou 515063, Peoples R China

Recommended Citation:
Song, Y.,Sun, C.,Shen, W.,et al. Hydrothermal post-synthesis of HZSM-5 zeolite to enhance the coke-resistance of Mo/HZSM-5 catalyst for methane dehydroaromatization reaction: Reconstruction of pore structure and modification of acidity[J]. APPLIED CATALYSIS A-GENERAL,2007,317(2):266-274.
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