【公開日：2025.06.10】【最終更新日：2025.05.23】
課題データ / Project Data
課題番号 / Project Issue Number
24UT0277
利用課題名 / Title
Adsorption behavior of nitrous oxide on ion-exchanged MOR-type zeolite
利用した実施機関 / Support Institute
東京大学 / Tokyo Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）革新的なエネルギー変換を可能とするマテリアル/Materials enabling innovative energy conversion（副 / Sub）マテリアルの高度循環のための技術/Advanced materials recycling technologies
キーワード / Keywords
X線回折/ X-ray diffraction,エネルギー貯蔵/ Energy storage,資源循環技術/ Resource circulation technology,易循環型材料設計技術/ Recycling-friendly material design technology
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
Ya Hanlong
所属名 / Affiliation
東京大学大学院工学系研究科化学システム専攻
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
飯盛 桂子,府川 和弘
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）,技術補助/Technical Assistance
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
Aim:The objective of this study is to determine the position and distribution of exchanged ions in MOR-type zeolites using high-resolution X-ray diffraction (XRD). This information is crucial for identifying adsorption sites and calculating adsorption energy.Use:Applications Nitrous oxide (N2O) is the third most significant greenhouse gas, and reducing its atmospheric concentration through adsorption is of great importance. Investigating ion-exchanged zeolites as adsorbents can provide insights into their adsorption performance, leading to the design of more efficient adsorbents for environmental applications.Contents:This study focuses on the synthesis and characterization of ion-exchanged MOR-type zeolites, with XRD being the primary technique used to determine the ion positions. The adsorption behavior of N₂O on these materials is analyzed to understand the impact of ion exchange modifications.
実験 / Experimental
X-ray diffraction (XRD; SmartLab Kα1) was conducted to determine the structural characteristics and ion distribution in MOR-type zeolites after ion exchange. The experimental conditions for XRD analysis were as follows:Voltage: 40V Current: 50 mA Measurement Mode: Transmission Sample Preparation: Samples were loaded in a capillary and dried under vacuum for 4 hours to remove moisture completely. Scanning Parameters:Start angle: 3°End angle: 80°Step size: 0.005°Scan speed: 0.2°/sThe influence of different exchanged ions on the XRD patterns was recorded and compared to understand structural variations and ion positioning.
結果と考察 / Results and Discussion
Preliminary XRD results show that the samples with different exchanged ions exhibit similar peak positions, indicating that the overall MOR framework remains unchanged. However, differences in peak intensities suggest variations in ion occupancy and distribution within the zeolite structure. Rietveld refinement is currently in progress to obtain precise ion positions and quantify their distribution within the zeolite framework. These results will provide further insights into the adsorption behavior of N2O and the role of specific exchanged ions in enhancing adsorption performance. Understanding the relationship between ion position and adsorption sites will be valuable for optimizing the design of ion-exchanged zeolites as efficient N2O adsorbents.
図・表・数式 / Figures, Tables and Equations
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件