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学科主题: 物理化学
题名: A study of the acidity of SAPO-34 by solid-state NMR spectroscopy
作者: Shen, Wanling1;  Li, Xin1;  Wei, Yingxu2;  Tian, Peng2;  Deng, Feng3;  Han, Xiuwen1;  Bao, Xinhe1
通讯作者: 包信和
关键词: SAPO-34 ;  Solid-state NMR ;  Acidity ;  Probe molecule
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2012-08-01
DOI: 10.1016/j.micromeso.2012.03.013
卷: 158, 页:19-25
收录类别: SCI
文章类型: Article
部门归属: 5;DNL12
项目归属: 502;DNL1202
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Using multinuclear solid-state NMR in combination with probe molecule techniques, we examined the acidic property of SAPO-34 with different Si content. The results show that there are two kinds of Bronsted acid sites in SAPO-34 with the acid strength of one kind higher than that of ZSM-5. The Si species and their distribution in the framework depend on the Si content. A large amount of Si islands are formed when Si content is high, at lower Si content, only isolated Si(OAl)(4) species exists. The Si content has little effects on the Bronsted acid strength of SAPO-34, but does affect the acid concentration. (C) 2012 Elsevier Inc. All rights reserved.
关键词[WOS]: SURFACE METHOXY GROUPS ;  MOLECULAR-SIEVES ;  MAS NMR ;  HYDROCARBON FORMATION ;  SILICON INCORPORATION ;  MICROPOROUS MATERIALS ;  ORGANIC IMPURITIES ;  ZEOLITE CATALYSTS ;  1ST PRINCIPLES ;  METHANOL
语种: 英语
WOS记录号: WOS:000305714200004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118077
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
2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

Recommended Citation:
Shen, Wanling,Li, Xin,Wei, Yingxu,et al. A study of the acidity of SAPO-34 by solid-state NMR spectroscopy[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2012,158:19-25.
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