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题名: Effect of Ge content on the synthesis and structure of Ge-ITQ-13 zeolite
作者: Li, Liping1, 2, 3;  Cui, Xiaojing1;  Xu, Shutao4;  Li, Junfen1;  Qin, Zhangfeng1;  Wang, Jianguo1
关键词: ITQ-13 Zeolite ;  Ge ;  Synthesis ;  Si/Ge Ratio ;  Substitution
刊名: MATERIALS EXPRESS
发表日期: 2015-02-01
DOI: 10.1166/mex.2015.1209
卷: 5, 期:1, 页:73-78
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Science & Technology - Other Topics ;  Materials Science
英文摘要: A series of Ge-ITQ-13 zeolites with Si/Ge molar ratio from 10 to 40 were synthesized and characterized with XRD, IR, FE-SEM, and Si-29 MAS NMR techniques. The results verified that almost of all the Ge atoms in the synthesis gel was incorporated into the ITQ-13 framework. Ge plays a structure-directing role in the crystallization process as a result of facilitating formation of double four-membered ring structural units. As a consequence, ITQ-13 zeolites can be synthesized with the synthesis gel having a high content of H2O in the presence of Ge. Si-29 MAS NMR spectroscopy shows that the incorporated Ge atoms are not randomly distributed in the Ge-ITQ-13 framework but selectively occupy certain lattice sites.
关键词[WOS]: PURE POLYMORPH-C ;  PREFERENTIAL LOCATION ;  CATALYTIC CRACKING ;  BETA-ZEOLITE ;  MECHANISM ;  FLUORIDE ;  ITQ-21 ;  SYSTEM ;  PORES
语种: 英语
WOS记录号: WOS:000352340100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146182
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, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
2.Shanxi Datong Univ, Coll Chem & Environm Engn, Datong 037009, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Li, Liping,Cui, Xiaojing,Xu, Shutao,et al. Effect of Ge content on the synthesis and structure of Ge-ITQ-13 zeolite[J]. MATERIALS EXPRESS,2015,5(1):73-78.
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