On the production of ultra-fine titanium hydride powder at room temperature

Improved reversible hydrogen storage of LiAlH4 by nano-sized TiH2

“…10b) starts around 90 C due to the catalytic effect of the residual TiH 2 nano and exhibits two steps corresponding to Eqs. (1) and (2) [29], because the formation of TiH 2 is easy under reactive milling [21,34,35]. Our study may be valuable for mechanism study and the substitution for halide dopants.…”

“…Regeneration of LiAlH 4 is also realized through reactive ball milling in the presence of THF and TiH 2 . [34,35]. First, 4 g Ti was loaded into a stainless steel milling vial with 24 steel balls (9.6 mm in diameter).…”

Local bonding structure in mechanically activated TiH2 and TiH2+graphite mixture

“…Much work has been performed on titanium hydride, as a model system, because it possesses one of the highest absorptive capacities among the metal-hydrides [2]. High-energy ball milling of Ti in H 2 atmosphere has been shown to be a simple, low-cost and highly effective technique to synthesize titanium hydride nanocrystalline powders at room temperature [3] by crashing the surface titanium oxide and making the fresh titanium surface accessible for interaction with H 2 . It is found that mechanical treatment of metal-hydrides greatly improves the hydrogen absorption-desorption kinetics [4], and that the addition of carbon-containing compounds or graphite to metal powders before milling improves the metal-to-hydrogen reactivity [5].…”

Boron Enhanced Synthesis of Ti-hydride Nanoparticles by Milling Ti/B in Hydrogen Flow

“…Mechanochemical synthesis is widely used to ease manufacturing of different inorganic compounds from elements, including metal hydrides [1][2][3][4][5][6]. Ball-milling stimulates solid state and gassolid reactions by decreasing the size of the intermixing reactants and increasing the number of chemically active surface and bulk sites.…”

“…A basically inert matrix protects fresh Ti-hydride nanofragments from atmospheric impact but assures hydrogen access to the fresh surface of Ti nanofragments. Ball-milling of Ti and graphite in H 2 is a highly effective technique to synthesize nanocrystalline Ti-hydride powder [3,6,12,13]. However, the formation of a TiC surface layer can block the Ti surface and suppress the Ti-H 2 interaction [12,13].…”