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

By V. Balema, J. Wiench, K. Dennis, M. Pruski, V. Pecharsky. 2001

186 citations recorded by the source corpus.

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.

Subfields: Catalysis, Condensed Matter Physics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2b6223b99ec8c1374bc584f0125ffb5ff3921f43

Citations in the corpus

• Mechanochemical synthesis of hydrogen storage materials (2013, unknown): “under moderate temperature and pressure conditions [166,167].”