Method for preparing nano alpha-Fe2O3
A kind of -fe2o3, nanotechnology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of uneven nucleation, high cost, complex process, etc., to expand the range of raw materials, reduce Production cost, effect of improving utilization rate
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[0023] Example 1
[0024] Take FeCl 3 ·6H 2 O is the raw material, take 1.35g FeCl 3 ·6H 2 O crystal plus 1.59g Na 2 CO 3 Mix and grind for 5 minutes, put the mixture in a sealed stainless steel reaction kettle, raise the temperature to 150° C. and stand still for 54 hours to crystallize. After the crystallization is completed, the filter cake is rapidly cooled, washed, and dried to obtain a crystalline product. Tested by X-ray diffraction (XRD), the product is α-Fe 2 O 3 , Α-Fe 2 O 3 The crystal size is 15-20nm. See the XRD and electron micrographs figure 1 with figure 2 .
Example Embodiment
[0025] Example 2
[0026] Take iron sludge as raw material, dissolve it with hydrochloric acid after high temperature modification, heat and concentrate, cool and crystallize, and dry to obtain ferric chloride crystals, take 1.35g FeCl 3 ·6H 2 O crystal plus 1.59g Na 2 CO 3 Mix and grind for 5 minutes, put the mixture in a sealed stainless steel reaction kettle, raise the temperature to 150° C. and stand still for 54 hours to crystallize. After the crystallization is completed, the filter cake is rapidly cooled, washed, and dried to obtain a crystalline product. Tested by X-ray diffraction (XRD), the product is α-Fe 2 O 3 , Α-Fe 2 O 3 The crystal size is 15-20nm.
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[0027] Example 3
[0028] Using converter ash as the raw material, the iron-containing material is separated by superconducting equipment, the iron-containing material is modified at a high temperature and then dissolved in hydrochloric acid, heated and concentrated, cooled and crystallized, and dried to obtain ferric chloride crystals, taking 1.35g FeCl 3 ·6H 2 O crystal plus 1.59gNa 2 CO 3 Mix and grind for 5 minutes, put the mixture in a sealed stainless steel reaction kettle, raise the temperature to 150° C. and stand still for 54 hours to crystallize. After the crystallization is completed, the filter cake is rapidly cooled, washed, and dried to obtain a crystalline product. Tested by X-ray diffraction (XRD), the product is α-Fe 2 O 3 , Α-Fe 2 O 3 The crystal size is 15-20nm.
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