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Effect of storage environment on hydrogen generation by the reaction of Al with water

Journal Article


Abstract


  • Al powder was stored in saturated water vapor, oxygen, nitrogen and drying air separately for a time period

    of up to six months, the degradation behavior of Al activity was characterized by the reaction of Al with

    water. It was found that water vapor decreased the induction time for the beginning of Al–water

    reaction and reduced the total hydrogen generation per unit weight of Al, while oxygen increased the

    induction time and retarded the Al–water reaction. In contrast, the effect of nitrogen and drying air on Al

    activity was weak. The mechanism analyses indicated that water vapor promoted the hydration of the Al

    surface passive oxide film and sped up the reaction of Al with water, while oxygen thickened the passive

    oxide film of the Al surface and prolonged its hydration process. These results imply that water vapor

    rather than oxygen is responsible for the degradation of Al activity during storage in the atmospheric

    environment.

UOW Authors


  •   Wang, Yin-Qiang (external author)
  •   Gai, Wei-Zhuo (external author)
  •   Zhang, Xia-Yu (external author)
  •   Pan, Hong-Yi (external author)
  •   Cheng, Zhenxiang
  •   Xu, Pingguang (external author)
  •   Deng, Zhen-Yan (external author)

Publication Date


  • 2017

Citation


  • Wang, Y., Gai, W., Zhang, X., Pan, H., Cheng, Z., Xu, P. & Deng, Z. (2017). Effect of storage environment on hydrogen generation by the reaction of Al with water. RSC Advances: an international journal to further the chemical sciences, 7 (4), 2103-2109.

Scopus Eid


  • 2-s2.0-85009725356

Number Of Pages


  • 6

Start Page


  • 2103

End Page


  • 2109

Volume


  • 7

Issue


  • 4

Abstract


  • Al powder was stored in saturated water vapor, oxygen, nitrogen and drying air separately for a time period

    of up to six months, the degradation behavior of Al activity was characterized by the reaction of Al with

    water. It was found that water vapor decreased the induction time for the beginning of Al–water

    reaction and reduced the total hydrogen generation per unit weight of Al, while oxygen increased the

    induction time and retarded the Al–water reaction. In contrast, the effect of nitrogen and drying air on Al

    activity was weak. The mechanism analyses indicated that water vapor promoted the hydration of the Al

    surface passive oxide film and sped up the reaction of Al with water, while oxygen thickened the passive

    oxide film of the Al surface and prolonged its hydration process. These results imply that water vapor

    rather than oxygen is responsible for the degradation of Al activity during storage in the atmospheric

    environment.

UOW Authors


  •   Wang, Yin-Qiang (external author)
  •   Gai, Wei-Zhuo (external author)
  •   Zhang, Xia-Yu (external author)
  •   Pan, Hong-Yi (external author)
  •   Cheng, Zhenxiang
  •   Xu, Pingguang (external author)
  •   Deng, Zhen-Yan (external author)

Publication Date


  • 2017

Citation


  • Wang, Y., Gai, W., Zhang, X., Pan, H., Cheng, Z., Xu, P. & Deng, Z. (2017). Effect of storage environment on hydrogen generation by the reaction of Al with water. RSC Advances: an international journal to further the chemical sciences, 7 (4), 2103-2109.

Scopus Eid


  • 2-s2.0-85009725356

Number Of Pages


  • 6

Start Page


  • 2103

End Page


  • 2109

Volume


  • 7

Issue


  • 4