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题名: A novel template-free sol-gel synthesis of silica materials with mesoporous structures and zeolitic walls
作者: Han, Wei;  Jia, Yuxin;  Yao, Nan;  Yang, Weishen;  He, Mingyuan;  Xiong, Guoxing
关键词: mesoporous materials ;  zeolites ;  sol-gel method ;  template-free
刊名: JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
发表日期: 2007-08-01
DOI: 10.1007/s10971-007-1564-4
卷: 43, 期:2, 页:205-211
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Materials Science, Ceramics
研究领域[WOS]: Materials Science
英文摘要: Hierarchical porous materials with zeolite structures show great promise in catalysis due to combining the advantages of zeolites and mesoporous materials. Here a novel template-free sol-gel method is developed to synthesize hierarchical porous silica materials. This method involves solvothermal recrystallization of the xerogel converted from uniform silicalite-1 precursor sol via vacuum drying process. The zeolite sol and the solid samples were characterized by laser light scattering, XRD, N-2 adsorption/desorption isotherm, FTIR, SEM, TEM and thermal analysis technologies. The results show that we obtain two novel materials with different mesoporous structures and silicalite-1 walls by using different recrystallization media, one of which has irregular arrays of mesopores, the other possesses 3D wormhole mesoporous structure. We speculate that formation of different mesoporous structures results from different nucleation and growth process of materials
关键词[WOS]: MOLECULAR-SIEVES ;  ALUMINOSILICATE MESOSTRUCTURES ;  SURFACE-AREA ;  MECHANISM ;  MFI
语种: 英语
WOS记录号: WOS:000247971100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140684
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, Grad Sch, Beijing 100049, Peoples R China
3.Hong Kong Univ Sci & Technol, Dept Chem Engn, Hong Kong, Hong Kong, Peoples R China
4.SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China

Recommended Citation:
Han, Wei,Jia, Yuxin,Yao, Nan,et al. A novel template-free sol-gel synthesis of silica materials with mesoporous structures and zeolitic walls[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2007,43(2):205-211.
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