Synthesis of novel spherical porous metal oxide composite and functional evaluation for reverse water gas shift reaction

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05216
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 27020:Chemical reaction and process system engineering-related
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: SHIMA Asuka 国立研究開発法人宇宙航空研究開発機構, 研究開発部門, 主任研究開発員 (80570035)
• Co-Investigator(Kenkyū-buntansha): 小廣 和哉 高知工科大学, 環境理工学群, 教授 (60170370)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 複合金属酸化物 / 逆水性ガスシフト反応 / CO合成

Outline of Final Research Achievements

Reverse water-gas shift reaction by the chemical loop method (RWGS-CL) has attracted attention as one of the methods for the selective synthesis of CO from CO2. In this study, we investigated the effects of the structural properties of a novel spherical porous metal oxide composite composed of iron oxide and cerium oxide in this reaction.
Using TGA, XPS, GC, etc., we evaluated the reaction characteristics of a FeOx-CeO2 spherical porous metal oxide composite. STEM-EDX analysis of the post-reaction samples revealed that Fe and Ce remained homogeneously dispersed. Repeated testing of RWGS-CL suggested the stabilizing effect of the reaction due to metal oxide compositing.

Free Research Field

航空宇宙工学

Academic Significance and Societal Importance of the Research Achievements

新規Fe2O3-CeO2ナノ粒子球状多孔体の酸素キャリアとしての有用性を示すことで、他のCL反応向け酸素キャリア合成への展開が期待できる。他方、COは石油由来の有価物を人工的に製造するための出発原料であり、このCOを従来よりも高効率・高選択的かつ省エネにCO2から直接合成することは、今日の世界的なCO2活用の機運の中、実用化が強く期待される反応経路の一つと言える。