Development of a high-temperature, high-sensitivity temperature-programmed desorption system for qualitative and quantitative analysis of heteroatoms

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K22459
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0401:Materials engineering, chemical engineering, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Yoshii Takeharu 東北大学, 多元物質科学研究所, 助教 (70882489)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: 昇温脱離法 / ヘテロ元素 / 窒素含有炭素材料

Outline of Final Research Achievements

Temperature-programmed desorption (TPD) is an analytical method that can reveal the chemical properties of samples. In this study, we succeeded in establishing an ultra-high temperature and high-sensitivity TPD measurement system and achieved simultaneous qualitative and quantitative analysis of nitrogen-containing carbon materials. This method is applicable even to trace amounts of nitrogen content, and is a novel analytical method that complements conventional methods such as XPS and CHN elemental analysis. The target materials are not limited to nitrogen-containing carbons, and further development is expected as a new analytical method for trace amounts of heteroatoms in various materials.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した超高温・高感度なTPD測定システムは，窒素含有炭素材料の定性・定量同時分析を実現し，窒素含有量が微量である場合においても分析が可能である．分析対象とした窒素含有炭素材料は，燃料電池の白金に代わる新規酸素還元触媒として期待されている．本手法により触媒中における窒素種の真の導入形態を解明することができれば，触媒性能向上に大きく貢献することが期待される．
また，炭素材料中の微量不純物は黒鉛電極の品質低下に大きな影響を及ぼしている．本手法を通して微量不純物元素種の動態に関する理解が深まれば，産業界への幅広い波及効果が期待される．