| Project/Area Number |
18K05203
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 34030:Green sustainable chemistry and environmental chemistry-related
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| Research Institution | Yokohama National University (2020)
Tokyo Metropolitan University (2018-2019) |
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Principal Investigator |
TAKETOSHI Ayako 横浜国立大学, 大学院工学研究院, 非常勤教員 (50533056)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 触媒 / 金クラスター / 金ナノ粒子 / 酸素酸化 / マイクロ波 |
|---|
| Outline of Final Research Achievements |
Gold clusters, which are smaller than 2 nm in diameter, could be deposited on metal oxide having high microwave absorption efficiency such as MnO2 by Deposition-precipitation method followed by microwave irradiation though the degree of reduction is still insufficient at 50%.
Selective esterification of aliphatic aldehydes and alcohols with ethanol in the absence of a base is a more difficult reaction than that with methanol. Gold nanoparticles on ZnO were found to be the most effective catalyst for the oxidative esterification of octanal and 1-octanol to ethyl octanoate without a base. Au/ZnO exhibited the highest catalytic activity in both batch and flow reactors.
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| Academic Significance and Societal Importance of the Research Achievements |
金触媒調製時、担体のマイクロ波吸収効率が高い場合、マイクロ波加熱により還元まで行うことが、クラスターサイズの金を担持するのに有効であるとわかった。今後さらなる条件検討により還元度合を制御できれば、金クラスター触媒の一般的な調製法となることが期待できる。エチルエステル合成については、現行のプロセスではアルデヒドから2工程必要だが、金触媒を用いることにより1工程に短縮でき、化学プロセスのシンプル化につながる。
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