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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
Song, Y.; Sun, C.; Shen, W.; Lin, L.; Shen WJ(申文杰); Lin LW(林励吾); Shen WJ(申文杰); Lin LW(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
2007-02-07
DOI10.1016/j.apcata.2006.10.037
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
关键词[WOS]NONOXIDATIVE CONDITIONS ; MOLYBDENUM CATALYSTS ; AROMATIZATION ; CONVERSION ; BENZENE ; MO ; DEHYDROCONDENSATION ; ZSM-5 ; CO2 ; DEALUMINATION
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.
语种英语
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WOS记录号WOS:000243831600017
引用统计
被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98903
专题中国科学院大连化学物理研究所
通讯作者Shen WJ(申文杰); Lin LW(林励吾); Shen WJ(申文杰); Lin LW(林励吾)
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
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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.
APA Song, Y..,Sun, C..,Shen, W..,Lin, L..,申文杰.,...&林励吾.(2007).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.APPLIED CATALYSIS A-GENERAL,317(2),266-274.
MLA Song, Y.,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".APPLIED CATALYSIS A-GENERAL 317.2(2007):266-274.
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