2021 Fiscal Year Final Research Report
In situ observation of the states of ions exchanged in zeolites through the measurement of far-infrared spectra utilizing synchrotron radiation apparatus and its establishment for the analysis method
Project/Area Number |
19K05499
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 34010:Inorganic/coordination chemistry-related
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Research Institution | Okayama University |
Principal Investigator |
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | ゼオライト / 遠赤外線領域の測定 / 放射光 / in situ測定 / DFT計算法 |
Outline of Final Research Achievements |
Zeolite is an inorganic material made up by elements such as Si, Al, O, and Ca which exist in large amounts in the earth-crust. In this work, it was clarified that one of zeolites exchanged with calcium ions exhibits prominent adsorption and separation nature for CO2 under the conditions of RT and even in the lower pressure region less than 5000 ppm. The active site for this phenomenon is elucidated by combining far-IR measurement with calculation method. This research was selected as a back cover paper in J. Mater. Chem. A published by RSC (IF=12.732). We also found the formation of prominent Xe compound with the Ag+ ion exchanged in MFI-type zeolite even at RT. This phenomenon was also examined by combining various types of spectroscopic methods with calculation method.
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Free Research Field |
無機化学
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Academic Significance and Societal Importance of the Research Achievements |
ゼオライトを用いた特異反応場の創出は種々の物質の特異吸着や活性化のための触媒開発の本質解明のために極めて重要な研究である.本研究では地球温暖化防止のためのCO2などの高効率で高選択な吸着および分離をめざした物質開発とその要因の解明を,SPring-8の放射光を利用した研究により行った.その結果,極めて重要な情報を得ることに成功し,王立協会の国際誌のバックカバーとして採用され,多くの研究者などから注目される内容となり,学術的にも意義深い内容である.さらに,この成果は,地球温暖化防止のためのゼオライト利用の可能性を切り開く重要な研究となるものと期待でき,企業との共同研究としてもスタートしている.
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