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题名: Synthesis of SAPO-34 with only Si(4Al) species: Effect of Si contents on Si incorporation mechanism and Si coordination environment of SAPO-34
作者: Xu, Lei1, 2;  Du, Aiping1;  Wei, Yingxu1;  Wang, Yingli1, 2;  Yu, Zhengxi1, 2;  He, Yanli1;  Zhang, Xinzhi1;  Liu, Zhongmin1
通讯作者: 刘中民
关键词: SAPO-34 ;  Si incorporation mechanism ;  Si coordination environment
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2008-11-01
DOI: 10.1016/j.micromeso.2008.02.001
卷: 115, 期:3, 页:332-337
收录类别: SCI
文章类型: Article
部门归属: 8
项目归属: 803
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: SAPO-34 molecular sieves with different Si coordination environment were synthesized by adjusting SiO2/Al2O3 molar ratio in starting gel. The crystal structure, element composition and Si coordination environment of the as-synthesized samples were characterized by XRD, SEM, XRF and NMR. SAPO-34 molecular sieve could be obtained when the SiO2/Al2O3 molar ratio of the starting gel was higher than 0.075. The content and modeling of Si incorporated into SAPO-34 framework varied with the SiO2/Al2O3 molar ratios in the starting gel and different Si chemical environments were formed correspondingly. SAPO-34 with only Si(4Al) coordination structure could be prepared when the SiO2/Al2O3 molar ratio of the starting gel was in range of 0.075-0.15. (c) 2008 Elsevier Inc. All rights reserved.
关键词[WOS]: ANGLE-SPINNING NMR ;  MOLECULAR-SIEVES ;  SILICON INCORPORATION ;  CONVERSION ;  CATALYSTS ;  METHANOL ;  ZEOLITES ;  ALPO4-18 ;  TEMPLATE ;  SITES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259845000012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100629
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Xu, Lei,Du, Aiping,Wei, Yingxu,et al. Synthesis of SAPO-34 with only Si(4Al) species: Effect of Si contents on Si incorporation mechanism and Si coordination environment of SAPO-34[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,115(3):332-337.
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