| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
During the research project period, I have successfully been performing the synchrotron X-ray experiments, which are in-situ X-ray absorption fine structure and ambient pressure X-ray photoelectron spectroscopy under reaction conditions in SPring-8 and Pohang Accelerator Laboratory in KOREA.
Through the analytic results of the in-situ X-ray experiment, I have submitted 1 research manuscript related to the three-way catalysts of PdRu nanoparticles supported on CeO2-ZrO2. In addition, I am preparing the research manuscript for the CO oxidation reaction of Pd-Ru nanoparticles and Pt-Ru nanoparticles.
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| 今後の研究の推進方策 |
Platinum group metals (PGMs) of five elements as ruthenium (Ru), rhodium (Rh), palladium (Pd), iridium (Ir), and platinum (Pt) are important for oxidation and reduction reactions. PGMs have excellent properties for catalysts such as high melting point, high heat resistance, and high corrosion resistance. Because of these properties, PGM is widely used in many industries, especially as automotive exhaust catalysts. High entropy alloys (HEAs), defined as at least five elements in near-equiatomic concentrations, facilitate the discovery of new materials and phenomena. The configurational entropy of metals increases with an increasing number of elements, known as the high entropy effect, which can decisively enhance material stability.
Therefore, we are planning to perform the synchrotron X-ray techniques (in-situ X-ray absorption fine structure and ambient pressure X-ray photoelectron spectroscopy) of HEA nanoparticles to reveal the thermal stability under reaction conditions.
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