Plasma catalysis at gas-surface interface for low-carbon hydrogen society
Project/Area Number |
18H01208
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 14030:Applied plasma science-related
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Research Institution | National Institute of Advanced Industrial Science and Technology |
Principal Investigator |
KIM Hyun-Ha 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 研究グループ長 (20356893)
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Co-Investigator(Kenkyū-buntansha) |
寺本 慶之 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (00635328)
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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 |
¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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Keywords | 低温プラズマ / 触媒 / アンモニア合成 / 沿面ストリーマ / プラズマジェット / プラズマ触媒 / 触媒活性 / 界面反応 / 気固界面反応場 / CO2資源化 |
Outline of Final Research Achievements |
In NH3 synthesis using Ru/alumina catalyst, Arrhenius plot indicated that plasma lowered the reaction barrier by one third. For example, activation energy in conventional thermal catalysis decreased to 1/3 for plasma-catalysis. We also investigated the surface streamer propagation with both polarities of negative and positive. In contrast to the CDS in the gas-phase with a positive polarity, the CDS in catalyst packed-bed under negative polarity showed a more branching and larger number of streamers in the presence of oxygen than in pure N2. For the CO oxidation, Pd-Ag bimetallic catalyst was found to be very active for both CO oxidation and O3 utilization efficiency. In-situ Fourier transform IR measurement revealed that cooperative effect in the bimetallic Ag-Pd catalyst involved modification of CO adsorption and the suppression of product accumulation. These finding may provide some useful insight in understanding fundamental working mechanism of plasma-catalysis.
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Academic Significance and Societal Importance of the Research Achievements |
プラズマ触媒の学理確立に必要な基礎的知見を得ると同時に水素エネルギー普及を想定したアンモニア合成法への応用を検討した。触媒を従来の熱反応より低い温度で活性化させるためにはプラズマを効率よく触媒と接触させる必要がある。高感度カメラによる触媒表面のプラズマ形成や進展を短い時間分解能(< 5 ns)で検証し、触媒接触点付近におけるプラズマの強化と加速などの特異的な特徴を明らかにした。また、アンモニア合成における活性化エネルギーの評価ではプラズマ法では熱反応より活性化エネルギーを1/3程度まで下げられることを検証し、分散型アンモニア合成に向けたプラズマ触媒法の可能性を示すことができた。
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Report
(4 results)
Research Products
(32 results)
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[Journal Article] Interim report of plasma catalysis: Footprints in the past and blueprints for the future2021
Author(s)
H.H. Kim, Ayman A.Abdelaziz, Y. Teramoto, T. Nozaki, K. Hensel, Y.S. Mok, S. Saud, D.B. Nguyen, D. H. Lee, W.S. Kang
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Journal Title
International Journal of Plasma Environmental Science and Technology
Volume: 15
Issue: 01
Pages: e01004-e01004
DOI
ISSN
1881-8692, 2435-0125
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] The 2020 plasma catalysis roadmap2020
Author(s)
Annemie Bogaerts, Xin Tu, J. Christopher Whitehead, Gabriele Centi, Leon Lefferts, Olivier Guaitella, Federico Azzolina-Jury, Hyun-Ha Kim, William Schneider, Tomohiro Nozaki, Anthony B Murphy, Antoine Rousseau, Frederic Thevenet, Ahmed Khacef, Maria Carreon
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Journal Title
J. Phys D: Appl. Phys
Volume: 53
Issue: 44
Pages: 443001-443001
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Highly efficient decomposition of toluene using a high-temperature plasma-catalysis reactor2020
Author(s)
Shuiliang Yao, Zhizong Chen, Han Xie, Yuchen Yuan, Ruowen Zhou, Bingqing Xu, Junxia Chen, Xinyue Wu,Zuliang Wu , Boqiong Jiang, Xiujuan Tang, Hao Lu, Tomohiro Nozaki, Hyun-Ha Kim,
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Journal Title
Chemosphere
Volume: 247
Pages: 125863-125863
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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