2022 Fiscal Year Final Research Report
Development of high-performance catalysts using titanium suboxides
| Project/Area Number |
21K14457
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 27030:Catalyst and resource chemical process-related
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| Research Institution | Hokkaido University |
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Principal Investigator |
Otomo Ryoichi 北海道大学, 地球環境科学研究院, 准教授 (10776462)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Keywords | 低原子価チタン酸化物 / アセタール化 / Ti2O3 / マグネリ相チタン酸化物 |
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| Outline of Final Research Achievements |
We have established a method to synthesize Ti2O3 maintaining the particle morphology of TiO2 raw material by reducing the single crystal particle of the raw material having particular morphologies with TiH2. Ti2O3 particles with a large specific surface area synthesized by this method showed high activity for the acetalization of furfural. It was clarified that Ti3+ on the Ti2O3 surface formed active sites that promoted the acetalization, while oxidized Ti4+ did not form such active sites.
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| Free Research Field |
触媒化学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，チタンの単独金属酸化物の酸性質や酸触媒特性がチタン原子価によって変化することを示した．これは、今まで知られていなかった低原子価チタン酸化物のユニークな化学反応性や触媒機能に関する新たな知見である．準安定な原子価をとった金属酸化物の機能開拓がさらに進めば，触媒材料としての金属酸化物のバリエーションの拡大につながると期待でき，本研究はその契機になるものである．
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