Development of characterization method for sub-nano scale small voids of amorphous materials by multi probe gas diffusion technique.
| Project/Area Number |
21560779
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
KANEZASHI Masakoto 広島大学, 大学院・工学研究院, 助教 (10467764)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 多孔性無機材料 / アモルファス / 構造評価 / 多孔性アモルファスシリカ膜 / 気体分離 / 気体拡散法 / 真密度測定 |
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| Research Abstract |
A novel equipment and technique for characterization of small void volume of microporous powder sample were developed based on the volumetric method by using various gas molecules as a probe molecule. As microporous materials, the porous powder sample of amorphous silica and BTESE(bis-triethoxysilyl ethane) silica was prepared, and the detailed void structure was evaluated using the multi-probe gas molecular diffusion method. This technique enables us to estimate the difference in the sub-nano scale void structure of these amorphous materials. The validity of this technique verified by evaluating the void volume of Y type zeolite whose micro structure is well known, and the theoretical pore volume was successfully obtained. The difference in the structure of amorphous silica and BTESE silica was examined also by the molecular simulation. The simulated molecular size dependence of gas diffusivity in these small void structures showed good correlation with the void volume distribution measured with the multi-probe gas molecular diffusion method.
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Report
(4 results)
Research Products
(22 results)
