Contol of catalytically active sites based on the framework Al atoms in metal-containing zeolites and its precise structure analysis

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K22551
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0502:Inorganic/coordination chemistry, analytical chemistry, inorganic materials chemistry, energy-related chemistry, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Osuga Ryota 東北大学, 多元物質科学研究所, 助教 (30874250)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: 金属含有ゼオライト / 活性点位置制御 / メタン改質反応 / 構造解析

Outline of Final Research Achievements

Control of the location of catalytic active sites is one of the important factors to design an efficient solid catalyst. In this study, Rh ion-exchanged MFI-type aluminosilicate zeolites with different framework Al positions were prepared for controlling the location, state, and size of Rh species. The MFI-type aluminosilicate zeolite with the framework Al atoms predominantly located inside the channel intersections leads to the formation of Rh oxide clusters, which exhibited high catalytic activity for the oxidative reforming of methane. In addition, the structure of the active sites and the role of zeolite framework were discussed using the model catalysts.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

金属含有ゼオライトは、有用な触媒として認知されているが、その金属種のサイズ、位置、状態の制御については、ほとんど報告されていない。したがって、本研究の成果は、金属含有ゼオライトの触媒設計における重要な知見となる。また、メタン改質反応は、合成ガスの製造において重要な工業反応の1つであるため、今回発見した高活性な触媒は社会的にも大きな意義を持つと言える。