The effects of the nanometric interstitial compounds TiC, ZrC and TiN on the mechanical and thermal dehydrogenation and rehydrogenation of the nanocomposite lithium alanate (LiAlH4) hydride

Dehydrogenation characteristics of LiAlH 4 improved by in-situ formed catalysts

“…Many approaches have been devoted to solve the drawbacks by doping with various catalysts. The catalysts presented in literature can be divided into several categories: carbon materials, including CNFs [12] , GNFs [13] , and SWCNTs [14] ; metal halides, such as VBr 3 [15] , VCl 3 [15] , AlCl 3 [15,16] , TiF 3 [17,18] , NiCl 2 [19] , LaCl 3 [20,21] , TiCl 3 [22,23] , MnCl 2 [24] ; metallic oxides, such as TiO 2 [23] , CeO 2 [25] , Y 2 O 3 [26] , Fe 2 O 3 [27] , Nb 2 O 5 [28] , MnFe 2 O 4 [29] , and NiFe 2 O 4 [30] ; pure metals and alloys, such as Ni [23,31] , Ti [21] , Fe [32] , TiAl 3 [32,33] , Al 3 Fe [32] ; and other materials, such as TiC [34] , TiH 2 [16], NaBH 4 [35] .…”

Improved hydrogen storage properties of LiAlH4 by mechanical milling with TiF3

“…Balema et al mechanically ball milled LiAlH 4 -3 mol % TiCl 4 at room temperature for 5 min, and then LiAlH 4 has completely broken down to Li 3 AlH 6 , Al and H 2 [20]. So far, the reported catalysts for LiAlH 4 are as given in the following: (1) metal hydrides, such as MgH 2 [21]; (2) elemental metals, such as Al [22], Ti [23], Fe [24], Ni [25], and Sc [23]; (3) metal halides, such asVCl 3 [26] and [27], TiF 3 [28], TiCl 3 [29,32] and TiCl 4 [20] and [30]; (4) [29,32]; and (6) others, such as TiC and TiN [33], graphite [34], MnFe 2 O 4 [35] and MWCNTs [36].…”

Mechanical and Thermal Dehydrogenation of the Mechano-Chemically Synthesized Calcium Alanate (Ca(AlH4)2) and Lithium Chloride (LiCl) Composite

“…It is to be pointed out that the mechano-chemical synthesis was carried out in the present work using a Fritsch Pulverisette 7 planetary mill. The milling energy generated by this type of mill is relatively modest by comparison with the magneto-mill Uni-Ball Mill 5 used for inducing a profound mechanical dehydrogenation reported in [ 3 , 4 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. In addition, the milling time up to 5 h used in the present work might have been too short to provide a sufficient milling energy input per gram of powder (kJ/g) to induce more pronounced mechanical dehydrogenation in a Fritsch Pulverisette 7 planetary mill.…”

“…So far, we found, that the hydride/hydride [ 6 , 7 , 8 , 9 ] and hydride/halide [ 6 , 7 , 8 , 9 ] mixtures were capable of mechanical dehydrogenation of about 4 wt % H 2 after injecting a quite low ball milling energy at the ambient temperature. A few other hydrides also released the quantity of 4 wt % H 2 although at lower mechanical dehydrogenation rates [ 6 , 10 , 11 , 12 ].…”