The effect of co-existing gases from the process of steam reforming reaction on hydrogen permeability of palladium alloy membrane at high temperatures

Atsushi Unemoto, Atsushi Kaimai, Kazuhisa Sato, Takanori Otake, Keiji Yashiro, Junichiro Mizusaki, Tatsuya Kawada, Tatsuya Tsuneki, Yoshinori Shirasaki, Isamu Yasuda

研究成果: Article査読

60 被引用数 (Scopus)

抄録

Hydrogen permeation measurements were carried out by using an Ag 23 wt%-Pd alloy membrane of 20 μ m thickness at temperatures from 773 to 873 K. Contrary to some reported results, hydrogen permeation flux was not affected by the co-existence of H2 O up to 9.5% at 873 and 773 K under non-pressurized conditions. Further addition of CO2 up to 27.9%, CH4 up to 6.8%, CO up to 4.6% did not reduce the permeation flux. Similarly, permeation flux was not affected in a pressurized system with H2 O up to 63%, 5% of CO with 30% of H2 O, 20% of CH4 with 15% of H2 O, under 0.29 MPa pressurization at 873 K. From the hydrogen partial pressure dependence of the permeation flux, the rate determining step was concluded to be the bulk diffusion of H in the membrane under the abovementioned conditions.

本文言語English
ページ(範囲)2881-2887
ページ数7
ジャーナルInternational Journal of Hydrogen Energy
32
14
DOI
出版ステータスPublished - 2007 9

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術

フィンガープリント

「The effect of co-existing gases from the process of steam reforming reaction on hydrogen permeability of palladium alloy membrane at high temperatures」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル