Preparation method of magnesium-based hydrogen storage material coated with rare earth oxide and nano boron nickel
A technology of rare earth oxides and rare earth hydroxides, applied in chemical instruments and methods, reactant parameter control, hydrogen, etc., can solve the problems of slow hydrogen absorption and desorption of metal magnesium, hindering the practical process, hindering hydrogen permeability, etc. , to achieve the effect of accelerating the hydrogen absorption rate, reducing the activation energy of the hydrogen absorption reaction of magnesium, and reducing the activation energy of the hydrogen desorption reaction
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Embodiment 1
[0025] Embodiment 1: mixed nitrate solution preparation
[0026] Dissolve 1 mole of nickel nitrate and 0.5 mole of lanthanum nitrate in 1.8 liters of deionized water at a molar ratio of 1:0.5:100 to form a nickel and lanthanum nitrate solution.
Embodiment 2
[0027] Embodiment 2: the formation of nanometer amorphous boron nickel
[0028] Dissolve 1 mole of nickel nitrate and 1 mole of cerium nitrate in 1.8 liters of deionized water at a molar ratio of 1:1:100 to form a nickel and cerium nitrate solution. 0.25 mole of sodium borohydride (9.45 g) was dissolved in 463.05 g of 10 wt % NaOH solution to obtain a lye solution containing 2 wt % sodium borohydride. Sodium borohydride lye is added dropwise to the nitrate solution of nickel and cerium, and the nickel in the solution is reduced to form nano boron nickel.
Embodiment 3
[0029] Embodiment 3: Preparation of nano-amorphous boron-nickel-doped lanthanum hydroxide gel
[0030] Dissolve 1 mole of nickel nitrate and 1 mole of lanthanum nitrate in 1.8 liters of deionized water at a molar ratio of 1:1.5:100 to form a nickel and lanthanum nitrate solution. 0.4 mole of sodium borohydride (15.12 g) was dissolved in 488.88 g of 10 wt % NaOH solution to obtain a lye solution containing 3 wt % sodium borohydride. Sodium borohydride lye is added dropwise to the nitrate solution of nickel and lanthanum, and the nickel in the solution is reduced to form nano-amorphous boron-nickel. Nano-amorphous boron-nickel doped lanthanum hydroxide gel.
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