Nanometer dysprosium oxide preparation method

A technology of nano-dysprosium oxide and dysprosium nitrate, which is applied in the direction of chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of insufficient uniformity of nano-dysprosium oxide particles, insufficient dispersion, and inability to prepare, so as to achieve large specific surface area and process technology Simple, uniform particle size effect
CN105502467AInactive Publication Date: 2016-04-20CHANGZHOU GEOQUIN NANO NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU GEOQUIN NANO NEW MATERIALS
Publication Date
2016-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a nanometer dysprosium oxide preparation method, which comprises: adding dysprosium nitrate with a concentration of 0.1-0.6 mol / L and prepared by using pure water to a reaction kettle, and weighing analytical pure sodium carbonate with a concentration of 0.1-0.6 mol / L and prepared by using pure water, wherein a mass ratio of the dysprosium nitrate to the analytical pure sodium carbonate is 1:1-1:1.2; weighing a polyethylene glycol 20000 surfactant with a mass ratio of 5-15% to the dysprosium nitrate, stirring for 15-30 min, uniformly adding a precipitating agent in a dropwise manner, carrying out stirring aging, carrying out suction filtration water washing, draining, adding a surfactant n-butanol, and uniformly stirring, wherein a molar ratio of the obtained substance to the n-butanol is 1:200-1:400; and calcining for 3-5 h at a temperature of 800 DEG C, and carrying out thermal insulation for 1 h so as to obtain the nanometer dysprosium oxide with a particle size of 40-60 nm and a specific surface area of greater than 25. With the preparation method of the present invention, the problems of non-uniform particles and insufficient dispersity are solved, and the characteristics of uniform particle and good dispersity are provided.
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Description

technical field

[0001] The invention belongs to the field of material preparation, and in particular relates to a preparation method of nanometer dysprosium oxide. Background technique

[0002] Dysprosium oxide is the raw material for producing dysprosium, glass, and additive for NdFeB permanent magnets. It is also used in metal halide lamps, magneto-optical memory materials, yttrium-iron or yttrium-aluminum garnet, and in the atomic energy industry. control stick. With the development of science and technology, there is more and more demand for nano-dysprosium oxide with large specific surface area. In ceramic electric fuses, nano-dysprosium oxide particles can significantly improve the performance of products. However, the particle size of dysprosium oxide precipitated by oxalic acid using the traditional method of rare earth industry is generally in the range of 1-15 μm, while the precipitation of ammonia water and ammonium bicarbonate cannot be prepared due to unfavorab...

Claims

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