Innovative CO2 reduction technology using plasma combined technology

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K19989
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 64020:Environmental load reduction and remediation-related
• Research Institution: Osaka Metropolitan University (2022-2023); Osaka Prefecture University (2020-2021)
• Principal Investigator: Yamasaki Haruhiko 大阪公立大学, 大学院工学研究科, 准教授 (10780900)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: プラズマ / 二酸化炭素 / 触媒 / 燃料化

Outline of Final Research Achievements

By reducing carbon dioxide, the cause of the greenhouse effect, to carbon monoxide and converting it to fuel, it is expected to reduce greenhouse gases, but the plasma power required is large, and energy consistency is an issue for practical application. This study aims to achieve efficient reduction by utilizing nonthermal plasma desorption technology. By combining an adsorbent and a catalyst in a plasma system, high concentration desorption is achieved and the reduction efficiency is improved, with the goal of a self-consistent carbon dioxide reduction technology. The system has successfully improved the system by mixing noble gases as the gas species during desorption, and the composite copper-doped alumina catalyst as the catalyst has shown improved reduction performance.

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Free Research Field

プラズマ産業応用

Academic Significance and Societal Importance of the Research Achievements

本研究により非熱プラズマと吸脱着および触媒の複合効果が得られ、非熱プラズマ単体での二酸化炭素の還元効果よりも高い性能が得られた。この研究成果をもとに、CO2の分離や貯蔵に代わるCO2の燃料化が期待できる。現状の性能では、電気分解によるCO2還元性能の方が未だ効率は高いが、大規模処理には本プラズマ技術の方が期待でき、本成果はプラズマ複合技術によるさらなるエネルギー効率向上の知見として、非常に価値のあり、インパクトは大きいものである。