| 研究課題/領域番号 |
20K15077
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| 研究機関 | 九州大学 |
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研究代表者 |
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| 研究期間 (年度) |
2020-04-01 – 2023-03-31
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| キーワード | Metal Organic Framework / cyclodextrin ligands / regenerable CO2 sorbent / Direct Air Capture / Core@shell structure |
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| 研究実績の概要 |
Utilizing the nontoxic metal salts and photosynthetic organic ligands, the applicant developed a metal-organic framework (MOF) with a surface area of 1457 m2/g. In 2021, the processing time for making homogenously distributed MOF was reduced to 6 h. High power probe sonicator eases the homogenous synthesis. The produced MOF exhibited reasonable CO2 and N2 adsorption.
As the quantitative adsorption measurement with MSB-GS-100-10M (BEL Japan) is delayed due to the instrument failure, applicant developed a sorption measurement reactor equipped with an online micro GC.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
4: 遅れている
理由
In original, the quantitative adsorption measurements were planned to do in collaboration with International Institute for Carbon-Neutral Energy Research using MSB-GS-100-10M (BEL Japan). However, it was not successful due to failure of instrument. Hence, applicant wanted to find suitable alternative options. As a result, the applicant developed a new reactor system for this purpose which is equipped with highly precise micro GC. The system is able to measure CO2 sorption from 400 ppm.
In addition, the continuous travel restrictions in 2021 due to COVID-19 delayed the proposed field visits in this project.
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| 今後の研究の推進方策 |
Quantitative CO2 sorption is the major challenge this project facing. The newly developed reactor system will be utilized for CO2 adsorption with time. In parallel, supportive studies will be conducted with "autosorb gas adsorption-desorption instrument".
Once the quantitative measurement is successful, the process optimization for MOF synthesis will be started, aiming to investigate the highest CO2 sorption capacity.
The optimized MOF material will be considered for CO2 sorption kinetic studies and different adsorption isotherm models (such as Langmuir model) will be applied to study the characteristics of adsorption.
In addition, the proposed field visits and research gatherings in top-class carbon capture facilities in Japan and abroad will be considered this year.
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| 次年度使用額が生じた理由 |
The project is at the final stage and precise data can be produced this year. The suspended field visits and data collection can be restarted this year due to the relaxation of travel restrictions.
The remaining budget will be utilized for quantitative CO2 sorption measurement studies, dense functionalization, process optimization, and publications purposes.
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