Fast observation of hydrogenation reaction of Pd nanoparticles by real-time-resolved X-ray absorption fine structure spectroscopy

X線吸収分光法によるPd微粒子水素化反応の実時間高速観測

Matsumura, Daiju; Okajima, Yuka*; Nishihata, Yasuo; Mizuki, Junichiro

Nanoparticles of Pd show different hydrogen absorption properties from bulk Pd. We have observed the X-ray absorption fine structure (XAFS) spectra with dispersive optics in order to understand the size effect of the Pd nanoparticles concerning the hydrogen storage process. Shortening of the oscillation wavelength was observed, which indicates that Pd-Pd interatomic distance was expanded due to the hydrogen absorption reaction. The expansion of the Pd particles is completed in 10 ms at the hydrogen pressure of 660 kPa.

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発表会議名	:	International Symposium on Metal-Hydrogen Systems; Fundamentals and Applications (MH 2012)
開催年月	:	2012/10
開催都市	:	Kyoto
開催国	:	Japan
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