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A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite
Li, XJ; Zhang, WP; Liu, SL; Han, XW; Xu, LY; Bao, XH; Bao XH(包信和); Bao XH(包信和)
关键词Mas Nmr Mo/hbeta Catalyst Hbeta Zeolite Interaction Olefin Metathesis Reaction Ethylene 2-butylene Propylene
刊名JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
2006-05-02
DOI10.1016/j.molcata.2006.01.046
250期:1-2页:94-99
收录类别SCI
文章类型Article
部门归属5,8
项目归属502,804
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]HYDROXYL-GROUPS ; H-BETA ; HZSM-5 ; AROMATIZATION ; MO/HZSM-5 ; ABSENCE ; OXYGEN ; SITES ; AL-27 ; SI-29
英文摘要The interfacial interaction of Mo species with the HBeta zeolite was studied by multinuclear MAS NMR, XRD and N-2 adsorption. As proved by the quantitative Al-27 MAS NMR, this interaction is so strong as to dealuminate the framework of HBeta, and leads to a new peak appearing at -14 ppm, which indicates the formation of crystalline Al-2(MoO4)(3). This can also be detected by XRD measurements when the Mo loading is as high as 9.0 wt.%. The corresponding quantitative Si-29 and H-1 MAS NMR spectra show that the amount of silanols and Bronsted acidic sites decrease obviously with increasing Mo loading. This also reveals an interaction between Mo species and HBeta support through an oxygen bridge resulting from condensation with the hydroxyls on the support. At higher Mo loadings, the interaction is so strong that it results in an extraction of aluminum from the zeolite framework, and subsequently appearance of Al-2(MoO4)(3) and loss of Bronsted acidic sites. These can be correlated to the low catalytic activity of Mo/HBeta in metathesis of ethylene and 2-butylene to propylene. (c) 2006 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000237318000018
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被引频次:36[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/321008/98063
专题中国科学院大连化学物理研究所
通讯作者Bao XH(包信和); Bao XH(包信和)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Li, XJ,Zhang, WP,Liu, SL,et al. A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2006,250(1-2):94-99.
APA Li, XJ.,Zhang, WP.,Liu, SL.,Han, XW.,Xu, LY.,...&包信和.(2006).A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,250(1-2),94-99.
MLA Li, XJ,et al."A high-resolution MAS NMR study on the potential catalysts Mo/HBeta for olefin metathesis: The interaction of Mo species with HBeta zeolite".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 250.1-2(2006):94-99.
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