Hydrogen-storage properties of solid-solution alloys of immiscible neighboring elements with Pd

Kohei Kusada, Miho Yamauchi, Hirokazu Kobayashi, Hiroshi Kitagawa, Yoshiki Kubota

研究成果: Article査読

91 被引用数 (Scopus)

抄録

Rh and Ag are the elements neighboring Pd, which is well known as a hydrogen-storage metal. Although Rh and Ag do not possess hydrogen-storage properties, can Ag-Rh alloys actually store hydrogen? Ag-Rh solid-solution alloys have not been explored in the past because they do not mix with each other at the atomic level, even in the liquid phase. We have used the chemical reduction method to obtain such Ag-Rh alloys, and XRD and STEM-EDX give clear evidence that the alloys mixed at the atomic level. From the measurements of hydrogen pressure-composition isotherms and solid-state 2H NMR, we have revealed that Ag-Rh solid-solution alloys absorb hydrogen, and the total amount of hydrogen absorbed reached a maximum at the ratio of Ag:Rh = 50:50, where the electronic structure is expected to be similar to that of Pd.

本文言語English
ページ(範囲)15896-15898
ページ数3
ジャーナルJournal of the American Chemical Society
132
45
DOI
出版ステータスPublished - 2010 11月 17
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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