2005 Fiscal Year Final Research Report Summary
Development of Nano-reaction Supports Using Hierarchically Porous Structure
| Project/Area Number |
15206072
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
NAKANISHI Kazuki Kyoto University, Graduate School of Science, Associate Professor, 理学研究科, 助教授 (00188989)
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| Co-Investigator(Kenkyū-buntansha) |
UYAMA Hiroshi Osaka University, Graduate School of Engineering, Professor, 工学研究科, 教授 (70203594)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Hierarchical pore structure / Sol-gel method / Three-dimensional observation / Silica / Liquid flow behavior / Surface modification |
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| Research Abstract |
Porous silica gels having sharply distributed macropores were prepared by a sol-gel reaction accompanied by a phase separation. Laser scanning confocal microscopy was utilized to obtain a series of thin-sliced images of the gels, from which the three-dimensional configuration was reconstructed. On the three-dimensional configuration, a statistical processing has been performed to extract size distribution of pores and gel skeletons as well as porosity, which have been conventionally measured by indirect method. Additional analysis on local surface curvatures gave information on mean curvature and Gauss curvature, which lead to the quantitative evaluation of the geometrical features of macroporous network. Liquid flow behavior was examined using real and simulated pressure drops against porosity.
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