Load type super-fine zinc powder zinc-complementary agent, its prepn. method and use
A technology of ultra-fine zinc powder and loading type, which can be used in food preparation, medical preparations containing active ingredients, and applications. Ease of use
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Examples
Embodiment 1
[0030] 1) Grinding the montmorillonite produced in Inner Mongolia to 300 mesh, adding water and stirring evenly to make a suspension slurry with a concentration of 10%;
[0031] 2) the zinc content is the zinc sulfate of 1.5% of montmorillonite weight, and the molar ratio is the sodium sulfite of 5 times of zinc sulfate, slowly add in the suspension slurry of step 1) under stirring, pass N 2 Reaction at 50°C for 2 hours;
[0032] 3) centrifugal dehydration of the suspension slurry in step 2);
[0033] 4) Drying and crushing the filter cake obtained in step 3) to 300 meshes to obtain a zinc supplement of loaded ultrafine zinc powder.
[0034] The transmission electron microscope observation shows that the average particle size of the ultrafine zinc powder supported by montmorillonite is 8nm; the particle size distribution is between 3nm and 12nm. The content of zinc in montmorillonite is 1.5% by weight.
Embodiment 2
[0036] 1) Grinding the clinoptilolite produced in Jinyun, Zhejiang to 400 mesh, adding water and stirring evenly to make a suspension slurry with a concentration of 1%;
[0037] 2) Zinc oxide with a zinc content of 2.5% by zeolite weight, and sodium bisulfite equimolar with zinc chloride are slowly added to the suspension slurry of step 1) under stirring, and N 2 React at 90°C for 10 hours;
[0038] 3) the suspension slurry in step 2) is filtered and dehydrated;
[0039] 4) drying and pulverizing the filter cake obtained in step 3) to 500 mesh to obtain a zinc supplement of loaded ultrafine zinc powder.
[0040] The transmission electron microscope observation shows that the average particle size of the zeolite-loaded ultrafine zinc powder is 12nm, and the particle size distribution is between 8nm and 20nm. The content of zinc in the zeolite is 2.5% by weight.
Embodiment 3
[0042] 1) Grinding a commercially available ZSM-5 zeolite molecular sieve to 500 mesh, adding water and stirring evenly to make a suspension slurry with a concentration of 5%;
[0043] 2) Zinc nitrate with a zinc content of 4% by zeolite weight, and potassium borohydride with a molar ratio of 0.5 times zinc nitrate are slowly added to the suspension slurry in step 1) under stirring, and N 2 Reaction at 100°C for 10 hours;
[0044] 3) the suspension slurry in step 2) is filtered and dehydrated;
[0045] 4) drying and pulverizing the filter cake obtained in step 3) to 500 mesh to obtain a zinc supplement of loaded ultrafine zinc powder.
[0046] The transmission electron microscope observation shows that the average particle size of the zeolite-loaded zinc powder is 40nm, and the particle size distribution is between 20nm and 65nm. The content of zinc in the zeolite is 4% by weight.
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Abstract
Description
Claims
Application Information
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