Development of novel solid catalysts by introducing various anions using oxygen vacancy sites

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K18914
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 27:Chemical engineering and related fields
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Kitano Masaaki 東京工業大学, 元素戦略MDX研究センター, 教授 (50470117)
• Project Period (FY): 2022-06-30 – 2024-03-31
• Keywords: 酸素欠陥 / ナトリウムナフタレニド / 異種アニオン導入

Outline of Final Research Achievements

We tried to introduce oxygen vacancy sites into various metal oxides such as titanium oxide by treating them with sodium naphthalenide as a strong reducing agent in a liquid phase. High density oxygen vacancies can be introduced into TiO2 and CeO2, and phosphate groups can be fixed on these oxide surface. The fixed phosphate groups are more than 10 times higher than the conventional method. The resultant materials exhibited high catalytic activity for the conversion of xylose into furfral with high selectivity. And the catalyst with a greater amount of phosphate groups introduced was able to synthesize furfural with higher selectivity.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

本研究により、触媒材料の比表面積を損なうことなく安定な酸化物材料の表面に高密度に異種アニオンを導入する手法を示した。本研究では、主にリン酸基を固定化した酸化チタンを触媒としフルフラールを合成する反応に適応したが、導入するアニオンの種類や酸化物材料を変えることによりその他様々な触媒反応にも適応できると期待できる。