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题名: Preparation, Characterization and Catalysis Properties of Ag/SBA-15 Nanocomposite by Supercritical Fluid Deposition
作者: Yin Jian-Zhong1;  Zhang Chuan-Jie1;  Xu Qin-Qin1;  Wang Ai-Qin2
关键词: supercritical fluid deposition ;  inorganic metallic salts ;  cosolvent ;  SBA-15 ;  nanocomposite
刊名: JOURNAL OF INORGANIC MATERIALS
发表日期: 2009
卷: 24, 期:1, 页:129-132
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: Ag/SBA-15 nanocomposite was prepared by supercritical fluid deposition (SCFD) method, with AgNO(3) as the precursor and ethanol or glycol as the cosolvent. AgNO(3) was firstly deposited onto the SBA-15 support at 50 degrees C, 23-25MPa, and reacted for 3-24h. The resultant composite was then subjected to calcination and reduction treatment for obtaining Ag/SBA-15 nanocomposite. Characterizations with XRD and TEM show that Ag nanoparticles (with sizes of 3-7nm) or nanowires (5-9nm in width and tens of nanometers to several micrometers in length) are formed in the nanochannels of SBA-15 support. It is demonstrated that SCFD is a green and effective method for preparation of nanocomposite. With the aid of cosolvent, the supercritical carbon dioxide can dissolve the inorganic metallic salts. Moreover, the morphologies of the nanocomposite can be controlled to some extent by selecting the deposition conditions. A catalytic test on the Ag/SBA-15 nanocomposite shows that the sample has a moderate activity, with the complete conversion of CO at 300 degrees C.
关键词[WOS]: CARBON NANOTUBES ;  AEROGEL NANOCOMPOSITES ;  NANOPARTICLES ;  SILICA ;  ROUTE
语种: 英语
WOS记录号: WOS:000262534800028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141470
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.Dalian Univ Technol, Sch Chem Engn, Dalian 116012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Yin Jian-Zhong,Zhang Chuan-Jie,Xu Qin-Qin,et al. Preparation, Characterization and Catalysis Properties of Ag/SBA-15 Nanocomposite by Supercritical Fluid Deposition[J]. JOURNAL OF INORGANIC MATERIALS,2009,24(1):129-132.
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