publication . Other literature type . Article . 2001

Titanium catalyzed solid-state transformations in LiAlH4 during high-energy ball-milling

V.P. Balema; J.W. Wiench; K.W. Dennis; M. Pruski; V.K. Pecharsky;
  • Published: 01 Nov 2001
  • Publisher: Elsevier BV
Abstract
Abstract Mechanical processing of polycrystalline LiAlH 4 in the presence of titanium- and iron-based catalysts induces the transformation of LiAlH 4 into Li 3 AlH 6 , Al and H 2 at room temperature. Several catalysts were tested and it was established that their activity gradually decreases from TiCl 4 to Fe in the series TiCl 4 >Al 3 Ti≫Al 22 Fe 3 Ti 8 >Al 3 Fe>Fe. The high catalytic activity of TiCl 4 has been attributed to microcrystalline intermetallic Al 3 Ti, which rapidly forms in situ from TiCl 4 and LiAlH 4 during mechanical processing and then acts as a heterogeneous dehydrogenation catalyst.
Subjects
free text keywords: Mechanical Engineering, Materials Chemistry, Mechanics of Materials, Metals and Alloys, Metallurgy, Inorganic chemistry, Microcrystalline, Catalysis, Titanium, chemistry.chemical_element, chemistry, Dehydrogenation, Mechanochemistry, Materials science, Intermetallic, Chemical engineering, Differential thermal analysis, Ball mill
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publication . Other literature type . Article . 2001

Titanium catalyzed solid-state transformations in LiAlH4 during high-energy ball-milling

V.P. Balema; J.W. Wiench; K.W. Dennis; M. Pruski; V.K. Pecharsky;