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题名: In situ growth and assembly of microporous aluminophosphate nanosheets into ordered architectures at low temperature and their enhanced catalytic performance
作者: Gao, Beibei1, 2;  Tian, Peng1;  Li, Mingrun3;  Yang, Miao1;  Qiao, Yuyan1, 2;  Wang, Linying1;  Xu, Shutao1;  Liu, Zhongmin1, 3
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2015
DOI: 10.1039/c5ta00888c
卷: 3, 期:15, 页:7741-7749
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: A low-temperature strategy to fabricate hierarchical aluminophosphate-based molecular sieves has been developed without the assistance of surfactants. The facile synthesis results in cylinder-like SAPO-5 (AFI) composed of oriented attached nanosheets with a thickness of 40-100 nm. The main exposed surface of the nanosheets is revealed by the SAED pattern to be the {001} plane, implying a short path for molecular diffusion in the one-dimensional 12-membered ring channel. Investigation on the crystallization process demonstrates that low temperature retards the crystal growth along the c-direction in SAPO-5 and the ordered architecture forms via a nanosheet formation and oriented attachment process. The aggregated morphology of SAPO-5 is template-dependent, which may be modified/changed by varying the template in the system. The low-temperature strategy is also successfully extended to the preparation of metal-containing aluminophosphate molecular sieves. The obtained MeAPO-5 (Me = Co, Mn, and Cr) and a novel CHA/AEI intergrowth CoAPO molecular sieve also possess hierarchical structures with nanosheet-assembled morphology. Remarkably, the present self-assembled AFI crystals exhibit an obvious improvement in catalytic reactions. This facile method provides a new way for the long-range organization of nanosized building blocks to fabricate hierarchical nanostructures.
关键词[WOS]: HIERARCHICAL ZEOLITE-BETA ;  CATIONIC POLYMER ;  CRYSTALLINE ZEOLITE ;  MOLECULAR-SIEVE ;  GOLD NANOPARTICLES ;  TEMPLATE ;  NANOSTRUCTURES ;  NANOCRYSTALS ;  MORPHOLOGY ;  POLYELECTROLYTE
语种: 英语
WOS记录号: WOS:000352441100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146178
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 Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Gao, Beibei,Tian, Peng,Li, Mingrun,et al. In situ growth and assembly of microporous aluminophosphate nanosheets into ordered architectures at low temperature and their enhanced catalytic performance[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(15):7741-7749.
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