| Project/Area Number |
22655070
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Hiroshima University |
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Principal Investigator |
INUMARU Kei 広島大学, 大学院・工学研究院, 教授 (80270891)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,690,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2010: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | 結晶 / 多孔体 / 多孔質単結晶 / ゼオライト / マイクロポーラスクリスタル / ヘテロポリ酸 / ポリオキソメタレート / スポンジ結晶 / 細孔径分布 / 固体NMR |
|---|
| Research Abstract |
We found and defined“sponge crystals”as the single crystals having continuous voids within them, but unlike zeolites, no intrinsic structural pores. This new category includes molecular single crystals having continuous voids originating from series of neighboring vacancies(~ 1 nm) of the constituent large molecules, affording nanospaces in the crystals. A typical example of‘‘sponge crystals'' is(NH_4)_3PW_<12> O_<40>, which is insoluble to water. In this study we focused on microporosity of water-soluble(NH_4)_4SiW_<12> O_<40>.+ 1H MAS NMR could distinguish NH_4^+ bare on the pore walls. The introduction of acidic proton into the channel could be achieved by substitution of H^+ for NH_4^+. The chemistry of the sponge crystal was presented in contrast to the chemistry of zeolites.
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