Elucidation of Zeolite Crystallization Mechanism by Time-Resolved Anomalous X-ray Scattering Measurements

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14708
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: Yamada Hiroki 公益財団法人高輝度光科学研究センター, 回折・散乱推進室, 研究員 (50873684)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: ゼオライト / 非晶質 / PDF解析 / 放射光 / X線異常散乱

Outline of Final Research Achievements

In this study, element-selective analysis was performed to reveal the environment surrounding the structure-defining agent in the precursor structure. As a result, it was clarified for the first time that the environment around Cs differs specifically depending on the synthesis system, and that the structure around Cs is formed in relatively large clusters. In particular, the anomalous X-ray scattering method, which played an important role in this study, has never been applied to zeolite precursors before, and its usefulness was demonstrated for the first time in the world.

Free Research Field

放射光

Academic Significance and Societal Importance of the Research Achievements

本成果は日本が世界に誇る大型放射光施設SPring-8を用いて、環境触媒として多岐にわたって用いられているゼオライトと呼ばれる材料の生成過程の構造変化を詳細に解析したものである。元素選択的な新しいアプローチを用いてゼオライト前駆体の構造形成に寄与する因子を同定することで、将来的には生成するゼオライトの物性の合理的な制御へとつながることが期待される。