Hydrogen generation by the hydrolysis reaction of ball-milled aluminium–lithium alloys

NaOH modified P(acrylamide) hydrogel matrices for in situ metal nanoparticles preparation and their use in H2 generation from hydrolysis of NaBH4

“…Upon titration of the pristine p(AAm) hydrogel, no The change in the structural of p(AAm) hydrogels after NaOH treatment was also determined via Fourier Transform Infrared Spectroscopy (FT-IR, Perkin Elmer Spectrum 100) as demonstrated in Figure 2(b). As can be seen, the N-H stretching band of primary amide, N-H bending vibration, aliphatic C-H stretching peak, and C5O and C-N stretching peaks belonging to p(AAm) hydrogels were observed at 3300 to 3500, 1650, 2900 to 2800, 1640 and 1400 cm 21 , respectively, and shown in Figure 2(b) as (1). The change in the characteristic peak of p(AAm) were illustrated in Figure 2(b) as (2).…”

“…It is a great desire in near future to use H 2 as energy carrier in a usable form for wide range of consumers. [1][2][3][4] Scientists expected to utilize H 2 as a potential fuel for power generating system such as on-board auxiliary power, stationary power generation, and as an energy storage medium for many purposes. [5][6][7] However, molecular H 2 does not instinctively exist in nature; nonetheless, it can be generated from numerous methods such as hydrolysis of chemical hydrides, steam reforming hydrocarbons, and some H 2 compounds, water electrolysis or by other methods.…”

“…19,20 NaBH 4 12H 2 O ! M:catalysts NaBO 2 1 4H 2 1heat " (1) This reaction approaches a remarkable 10.8 wt % gravimetric efficiency when calculated in relation to the weight of the NaBH 4 alone, and in the presence of excess amounts of water this ratio decrease to 2.9 wt % when calculated in relation to both water and NaBH 4. 21,22 Noticeable H 2 generation has not occurred when NaBH 4 dissolves in water without catalyst.…”

Controllable Hydrolysis Performance of MgLi Alloys and Their Hydrides

“…Only 275.8 mL/g of hydrogen was produced in deionized water in 30 min, while 966, 966 and 960 mL/g of hydrogen were obtained at 5 min in 0.1, 0.5 and 1 M MgCl 2 solutions, respectively. Compared with the AlÀ Li system, [34] MgLi-10 wt.% EG show better kinetics in the 0.5 M MgCl 2 solution, producing 943 mL/g hydrogen in 1 min with 97 % conversion rate. The results show that the introduction of MgCl 2 improve hydrolysis kinetic, which may be due to the attack of Cl À on Mg(OH) 2 passivation layer.…”

“…However, there are difficulties remaining to reach hydrogen production yield and good kinetic performance in Mg/Al-based materials. The pure LiH can obtain 25 wt.% hydrogen, but it is not suitable for hydrolysis to produce hydrogen due to the violent reaction between LiH and H 2 O. Zhongwei Zhao [34] reported that the addition of Li improved the hydrogen production performance of aluminum-lithium alloys to achieve about 100 % conversion rate. In MgÀ AlÀ Li system, it was found that the change of Li content also affected the apparent activation energy of Al stage and the hydrolysis reaction conditions of Al.…”