Hydrogen Storage Properties of Lithium Aluminohydride modified by dopants and mechanochemistry Metadata

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Title

  • Main Title Hydrogen Storage Properties of Lithium Aluminohydride modified by dopants and mechanochemistry

Creator

  • Author: Hosokawa, Keita
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Science.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Science (SC) (United States)

Publisher

  • Name: Ames Laboratory
    Place of Publication: Iowa
    Additional Info: Ames Lab., IA (United States)

Date

  • Creation: 2002-05-30

Language

  • English

Description

  • Content Description: Alkali metal aluminohydrides have high potential as solid hydrogen storage materials. They have been known for their irreversible dehydrogenation process below 100 atm until Bogdanovic et al [1, 2] succeeded in the re-hydrogenation of NaAlH{sub 4} below 70 atm. They achieved 4 wt.% H{sub 2} reversible capacity by doping NaAlH{sub 4} with Ti and/or Fe organo-metalic compounds as catalysts. This suggests that other alkali and, possibly alkaline earth metal aluminohydrides can be used for reversible hydrogen storage when modified by proper dopants. In this research, Zr{sub 27}Ti{sub 9}Ni{sub 38}V{sub 5}Mn{sub 16}Cr{sub 5}, LaNi{sub 4.85}Sn{sub 0.15}, Al{sub 3}Ti, and PdCl{sub 2} were combined with LiAlH{sub 4} by ball-milling to study whether or not LiAlH{sub 4} is capable to both absorb and desorb hydrogen near ambient conditions. X-ray powder diffraction, differential thermal analysis, and scanning electron microscopy were employed for sample characterizations. All four compounds worked as catalysts in the dehydrogenation reactions of both LiAlH{sub 4} and Li{sub 3}AlH{sub 6} by inducing the decomposition at lower temperature. However, none of them was applicable as catalyst in the reverse hydrogenation reaction at low to moderate hydrogen pressure.
  • Physical Description: 2700 Kilobytes pages

Subject

  • Keyword: Scanning Electron Microscopy Lithium Aluminohydride
  • Keyword: Hydroxides
  • STI Subject Categories: 08 Hydrogen
  • STI Subject Categories: 36 Materials Science
  • Keyword: Hydrogenation
  • Keyword: Catalysts
  • Keyword: Hydrogen
  • Keyword: Dehydrogenation
  • Keyword: Differential Thermal Analysis
  • Keyword: Lithium
  • Keyword: Lithium Aluminohydride
  • Keyword: Dopants
  • Keyword: Alkali Metals
  • Keyword: Alkaline Earth Metals
  • Keyword: Hydrogen Storage

Source

  • Other Information: TH: Thesis (M.S.); Submitted to Iowa State Univ., Ames, IA (US)

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Thesis or Dissertation

Format

  • Text

Identifier

  • Report No.: IS-T 2068
  • Grant Number: W-7405-ENG-82
  • Office of Scientific & Technical Information Report Number: 795180
  • Archival Resource Key: ark:/67531/metadc737305

Note

  • Display Note: OSTI as DE00795180
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