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题名: Synthesis and Morphology Control of AM-6 Nanofibers with Tailored -V-O-V- Intermediates
作者: Guo, Meiling1;  Feng, Zhaochi1;  Hofmann, Jan P.2;  Weckhuysen, Bert M.2;  Fan, Fengtao1;  Li, Can1
关键词: hydrothermal synthesis ;  Raman spectroscopy ;  reaction mechanisms ;  X-ray diffraction ;  zeolites
刊名: CHEMISTRY-A EUROPEAN JOURNAL
发表日期: 2013-10-11
DOI: 10.1002/chem.201301812
卷: 19, 期:42, 页:14200-14204
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Microporous vanadosilicates with octahedral VO6 and tetrahedral SiO4 units, better known as AM-6, have been hydrothermally synthesized with different morphologies by controlling the Na/K molar ratio of the initial gel mixtures. The morphology of the AM-6 materials changed from bulky cube to nanofiber aggregates as the Na/K molar ratio decreased from 1.9 to 0.2. Raman spectroscopy revealed that the VO3- intermediate species plays an important role in the formation of the nanofiber morphology. The orientation of -V-O-V- chains in nanofiber aggregates was examined by confocal polarized micro-Raman spectroscopy. It was found that these aggregates are assemblies of short -V-O-V- chains perpendicular to the axis of nanofibers. The obtained AM-6 nanofibers greatly increase the exposed proportion of VO terminals, and thus improve the catalytic performance.
关键词[WOS]: MICROPOROUS TITANOSILICATE ETS-10 ;  QUANTUM WIRES ;  VANADOSILICATE AM-6 ;  LOCAL-STRUCTURE ;  ACID TREATMENT ;  CATALYSTS ;  ZEOLITE ;  CRYSTALLIZATION ;  ENHANCEMENT ;  IRRADIATION
语种: 英语
WOS记录号: WOS:000325488900030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137624
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.Univ Utrecht, Debye Inst NanoMat Sci, NL-3584 CG Utrecht, Netherlands

Recommended Citation:
Guo, Meiling,Feng, Zhaochi,Hofmann, Jan P.,et al. Synthesis and Morphology Control of AM-6 Nanofibers with Tailored -V-O-V- Intermediates[J]. CHEMISTRY-A EUROPEAN JOURNAL,2013,19(42):14200-14204.
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