A kind of preparation method of alh3/mgcl2 nanocomposite powder
A nano-composite and powder technology, applied in chemical instruments and methods, metal hydrides, inorganic chemistry, etc., can solve the problems of harsh reaction conditions, large grain size, complex process, etc., and achieve high thermal activity and easy dehydrogenation. , the effect of simple process
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specific Embodiment approach
[0018] Specific embodiment: 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-2mm or a magnesium alloy powder with a particle size of 0.1mm-2mm in the ball milling tank, and put the ball into the grinding ball at a ratio of (30-120):1 to the mass of the ball. Ball milling under a hydrogen atmosphere at a speed of 250r / min~400r / min for 15h~20h, to obtain nanocrystalline MgH with a grain size of 9nm~11nm and a powder size of 1μm~10μm 2 powder;
[0020] 2. Ball milling and reaction: ①First, the nanocrystalline MgH with a grain size of 9nm~11nm and a powder size of 1μm~10μm 2 Powder and AlCl 3 The powder is mixed uniformly, and then placed in the ball milling tank, and the ball is placed in the ball at a ratio of (30 to 120):1; ②Under the conditions of a hydrogen atmosphere and a pr...
specific Embodiment approach 2
[0025] Specific embodiment two: this embodiment is different from specific embodiment one in that: the magnesium alloy described in step one is ZK60; the Mg content in the ZK60 is 93.5%, the Zn content is 6%, and the Zr content is 0.5%. The other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0026] Specific embodiment three: This embodiment is different from specific embodiment one or two in that: in step one, magnesium powder with a particle size of 0.05mm-2mm or magnesium alloy powder with a particle size of 0.05mm-2mm is placed in a ball milling tank , Put the ball into the ball at a ratio of (40~100):1 in the mass ratio of the ball, and mill it at a speed of 300r / min~400r / min for 16h~20h under a hydrogen atmosphere to obtain a grain size of 9nm~11nm. Nanocrystalline MgH with a particle size of 1μm~10μm 2 powder. The other steps are the same as the first or second embodiment.
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