AlH3/MgCl2 nanometer complex powder preparation method
A technology of nanocomposites and powders, applied in chemical instruments and methods, metal hydrides, inorganic chemistry, etc., can solve the problems of harsh reaction conditions, large grain size, and low dehydrogenation capacity, and achieve high thermal activity and easy Effect of dehydrogenation and cost reduction
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specific Embodiment approach
[0018] Specific embodiments: this embodiment is a kind of AlH 3 / MgCl 2 The preparation method of nanocomposite powder is specifically completed according to the following steps:
[0019] 1. Preparation of nanocrystalline MgH 2 Powder: Put magnesium powder with a particle size of 0.1mm to 2mm or magnesium alloy powder with a particle size of 0.1mm to 2mm in a ball mill pot, put the ball into the ball at a mass ratio of (30 to 120):1, and Ball milling at a speed of 250r / min to 400r / min for 15h to 20h under a hydrogen atmosphere to obtain nanocrystalline MgH with a grain size of 9nm to 11nm and a powder particle size of 1μm to 10μm 2 powder;
[0020] 2. Ball milling and reaction: ① Firstly, the nanocrystalline MgH 2 Powder and AlCl 3 Mix the powder evenly, then put it in the ball mill jar, put the ball into the ball according to the mass ratio of ball to material (30~120):1; ②under the condition of hydrogen atmosphere and pressure of 0.2MPa~1.0MPa, use Min ~ 400r / min speed...
specific Embodiment approach 2
[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that: the magnesium alloy described in step 1 is ZK60; the Mg content in the ZK60 is 93.5%, the Zn content is 6%, and the Zr content is 0.5%. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one, magnesium powder or magnesium alloy powder with a particle size of 0.05 mm to 2 mm is placed in a ball mill jar , according to the ratio of mass ratio of ball to material (40-100): 1, put the ball into the ball, and ball mill at a speed of 300r / min-400r / min for 16h-20h under the hydrogen atmosphere to obtain a powder with a grain size of 9nm-11nm. Nanocrystalline MgH with a particle size of 1 μm to 10 μm 2 powder. Other steps are the same as those in Embodiment 1 or 2.
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