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Study Mo/HZSM-5 Catalysts by NMR
Liu Wei1; Xu Yide1; Li Liyun2; Hu Hongbing2
关键词Al-27 And Si-29 Mas-nmr Dealuminum Mo/hzsm-5 Al-2(Moo4)(3) Methane Activation
刊名ACTA PHYSICO-CHIMICA SINICA
1997
DOI10.3866/PKU.WHXB19970804
13期:8页:693-699
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
英文摘要By using high-resolution solid state Nuclear Magnetic Resonance spectrometer with Al-27 and Si-29 probes, the interaction between Mo species and HZSM-5 of Mo/HZSM-5 catalysts has been studied. The results show that there is a strong interaction between Mo species and HZSM-5 zeolite. The framework aluminium in the zeolite can be easily extracted by the introduction of Mo species. The extract ability of framework aluminium by Mo species increases with increasing Mo loading and the calcination temperature. The extraction process leads to the formation of non-framework Al at first and then a new crystalline phase of Al-2(MoO4)(3). The catalyst, therefore, lost its catalytic activity for methane dehydrogenation and aromatization in the absence of oxygen. The MAS NMR results give us an evidence that Al-2(MoO4)(3) crystallites are much less active for the reaction.
语种英语
WOS记录号WOS:000207601800004
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142822
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Wuhan Inst Phys, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
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GB/T 7714
Liu Wei,Xu Yide,Li Liyun,et al. Study Mo/HZSM-5 Catalysts by NMR[J]. ACTA PHYSICO-CHIMICA SINICA,1997,13(8):693-699.
APA Liu Wei,Xu Yide,Li Liyun,&Hu Hongbing.(1997).Study Mo/HZSM-5 Catalysts by NMR.ACTA PHYSICO-CHIMICA SINICA,13(8),693-699.
MLA Liu Wei,et al."Study Mo/HZSM-5 Catalysts by NMR".ACTA PHYSICO-CHIMICA SINICA 13.8(1997):693-699.
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