2021 Fiscal Year Research-status Report
Analyses of the Synergy of Sub/Supercritical H2O-CO2 System for Synthesis of Green Platform Chemicals
| Project/Area Number |
17KK0118
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| Research Institution | Kumamoto University |
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Principal Investigator |
キタイン アルマンド 熊本大学, 大学教育統括管理運営機構, 教授 (50504693)
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| Project Period (FY) |
2018 – 2022
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| Keywords | hydrolysis / supercritical CO2 / subcritical water / Raman spectroscopy / functionalization / reduction / 5-HMF / glycosidic bond |
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| Outline of Annual Research Achievements |
In AY2021, due to COVID-19 pandemic-related travel restrictions, mobility of researchers and students was not possible. Instead, the following related activities were carried out:
1. Application of nanodiamond provided by host professor in Wuerzburg University on CO2 reduction and sugar conversion to platform chemicals, obtaining promising results.
2. Conversion of sugar under microwave irradiation and graphene oxide and nanodiamond catalysts, showing this unique synergy to have significantly positive effect on reaction.
3. Degradation of amino acids, showing positive effect of adding CO2 especially on deamination reaction.
Academic activities such as invitation of host professors to give online lectures and participation as panelist in a symposium hosted by Kumamoto University.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The experiments on nanodiamond provided by host professor in Wuerzburg University on CO2 reduction and sugar conversion to useful chemicals and fuels were carried out here in Kumamoto University. At first, we investigated the physical properties including the structure and surface functionalities. Its catalytic activity was then investigated on the reduction of CO2 under hydrothermal conditions. The effects of various parameters on the yield of useful compounds such as alcohols were then investigated. We detected the presence of alcohols in the products especially at 300 oC, and the veracity of the results will be checked. The mixed scCO2-H2O system has also been investigated for conversion of sugars into useful chemicals, and for deamination of amino acids.
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| Strategy for Future Research Activity |
Catalytic hydrothermal conversion of CO2 into useful chemicals or fuels will be further investigated at around 300 oC. The veracity of previous results will be checked. The use of nanodiamond as catalyst will be further compared with our graphene oxide-based catalysts. The application of scCO2-H2O system on conversion of sugars and deamination of amino acids will be investigated in details, especially at a temperature close to 250 oC.
If the pandemic-related travel restrictions will be lifted, the principal investigator will visit the host institutions in Europe to work further on the functionalization of carbon-based catalysts and in-situ Raman spectroscopy. We will also continue the online academic activities with the host professors to further strengthen the collaboration.
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[Book] Value-Chain of Biofuels: Fundamentals, Technology, and Standardization2021
Author(s)
Siaw Weii Hii, Bridgid Lai Fui Chin, Fanthagiro Rossi Stuard Anak Majing, Huei Yeong Lim, Adrian Chun Minh Loy, Chung Loong Yiin, Suzana Yusup, Armando T Quitain, Menandro N Acda, Pornkamol Unrean, Elisabeth Rianawati
Total Pages
24
Publisher
Elsevier
ISBN
978-0-12-824388-6
