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Preparation method of spherical ferrite

A technology of ferrite and ferric chloride, which is applied in the preparation of manganese ferrite and magnesium ferrite powder, and in the field of spherical spinel zinc ferrite, can solve the problems of difficult control of material morphology, Achieve the effect of easy control of reaction conditions, simple reaction raw materials and good crystallization

Inactive Publication Date: 2013-01-02
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of sodium hydroxide makes the nucleation and crystallization process faster, and the shape control of the material is more difficult

Method used

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  • Preparation method of spherical ferrite
  • Preparation method of spherical ferrite
  • Preparation method of spherical ferrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature, 1.0812g FeCl 3 ·6H 2 O and 0.2726g ZnCl 2 Dissolve in 50mL ethylene glycol solution, stir and dissolve at room temperature to obtain a uniformly dispersed solution. Measure 2mL of ethanolamine into the solution, stir and mix evenly, transfer the solution into a reaction kettle (the capacity of the reaction kettle is 100mL), and seal it. The reaction kettle was put into an oven and kept at 200° C. for 24 hours. After the reaction kettle was naturally cooled to room temperature, the product was taken out, and the product was separated by centrifugation. The separated product was washed three times with deionized water and absolute ethanol respectively, and dried in the air at 60°C. figure 1 The result of X-ray powder diffraction shows that it is a single-phase zinc ferrite. from figure 2 It can be seen from the transmission electron microscope photos that the zinc ferrite is spherical in shape with a particle size of 100-300nm.

Embodiment 2

[0027] At room temperature, 1.0812g FeCl 3 ·6H 2 O and 0.2726g ZnCl 2 Dissolve in 50mL ethylene glycol solution, stir and dissolve at room temperature to obtain a uniformly dispersed solution. Measure 5mL of ethanolamine and add it into the solution, stir and mix evenly, transfer the solution into a reaction kettle (the capacity of the reaction kettle is 100mL), and seal it. Reactor is put into baking oven, is incubated at 200 ℃ for 12 hours. After the reaction kettle was naturally cooled to room temperature, the product was taken out, and the product was separated by centrifugation. The separated product was washed three times with deionized water and absolute ethanol respectively, and dried in the air at 60°C. image 3 The result of X-ray powder diffraction shows that it is a single-phase zinc ferrite.

Embodiment 3

[0029] At room temperature, 1.0812g FeCl 3 ·6H 2 O and 0.2726g ZnCl 2 Dissolve in 50mL ethylene glycol solution, stir and dissolve at room temperature to obtain a uniformly dispersed solution. Measure 10mL of ethanolamine into the solution, stir and mix evenly, transfer the solution into a reaction kettle (the capacity of the reaction kettle is 100mL), and seal it. The reaction kettle was put into an oven and kept at 180° C. for 24 hours. After the reaction kettle was naturally cooled to room temperature, the product was taken out, and the product was separated by strong magnet adsorption. The separated product was washed 3 times with deionized water and absolute ethanol respectively, and dried in the air at 60°C. Figure 4 The result of X-ray powder diffraction shows that it is a single-phase zinc ferrite.

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Abstract

The invention provides a preparation method of spherical magnetic ferrite (zinc ferrite, magnesium ferrite and manganese ferrite) by taking ethanol amine as a precipitator in a solvothermal method. The preparation method is characterized by comprising the steps of: taking ferric trichloride and an ethylene glycol solution of chloride as a reaction solution as well as the ethanol amine as a precipitator; stirring at the room temperature and evenly mixing to form a liquid phase reaction solution; transferring the liquid phase reaction solution into a reaction kettle, and carrying out hydrothermal reaction at 180-250 DEG C; and after the reaction, separating, washing and drying the product to obtain the corresponding ferrite powder. The method has the characteristics of being low in price of raw materials, simple in technology, convenient in operation, controllable in morphology, etc.

Description

technical field [0001] The invention relates to a preparation method of a magnetic material, in particular to a preparation method of spherical spinel zinc ferrite, manganese ferrite and magnesium ferrite powder. Background technique [0002] The general chemical formula of spinel ferrite is MFe 2 o 4 , where M can be manganese, cobalt, nickel, zinc, magnesium, etc. can be adjusted by M 2+ Components and reaction conditions to change the magnetic properties of ferrite magnetic particles. The excellent magnetic properties of ferrite materials are widely used as materials for high-density information recording, magnetic fluids, targeted drug delivery, and electromagnetic wave absorption. [0003] The research on the morphology-controllable preparation of magnetic materials has attracted the attention of many researchers, because magnetism is closely related to the morphology of materials. At present, the synthesis methods used to prepare ferrite magnetic materials mainly ...

Claims

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Application Information

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IPC IPC(8): C04B35/626C04B35/26
Inventor 杨丽霞刘冰唐清华
Owner LUDONG UNIVERSITY
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