Preparation method of spherical yttrium oxide powder

A technology of yttrium oxide and powder, which is applied in the field of preparation of spherical granular yttrium oxide powder, can solve the problems of unfavorable industrial production application, high energy consumption of industrial production, and difficult industrial production, so as to facilitate popularization and use and reduce industrial production Low energy consumption and low difficulty in industrial production

Inactive Publication Date: 2016-11-09
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application number is 200910198286.8 patent application published "a preparation method of spherical, monodisperse single-size yttrium oxide nanopowder", the method uses yttrium nitrate or yttrium chloride solution and urea reaction to prepare yttrium oxide precursor, but the concentration 0.005-0.04 mol/liter, because the concentration of yttrium salt is too small, the output of yttrium oxide obtained in unit container is too low, which is not conducive to industrial production application; in addition, in this method, the consumption of urea is 40 times of the amount of yttrium ion substance to 120 times, the utilization rate of urea is too low, and the production cost is high; the ammonia nitrogen content in the production w

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  • Preparation method of spherical yttrium oxide powder
  • Preparation method of spherical yttrium oxide powder
  • Preparation method of spherical yttrium oxide powder

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Embodiment 1

[0039] A preparation method of spherical yttrium oxide powder, comprising the following steps:

[0040] (1) Preparation of initial powder of yttrium oxide precursor:

[0041] Dissolve yttrium salt-yttrium nitrate in water to obtain a concentration of 0.05mol. L -1 The aqueous solution of yttrium nitrate is 30 times of the amount of yttrium ion substance according to the amount of the precipitating agent, and the concentration is 0.5mol. L -1The precipitating agent solution, the precipitating agent is urea, stirred and dissolved to obtain a mixed solution, the surfactant cetyltrimethylammonium bromide (CTAB) was added according to 0.1% of the mixed solution mass, stirred and dissolved, and kept at 95°C Stir the reaction for 1 hour, use the uniform precipitation method to obtain the precipitate of the yttrium oxide precursor, centrifuge or filter to separate the precipitate; wash the precipitate twice with distilled water, then soak it with absolute ethanol once, and dry it t...

Embodiment 2

[0047] A preparation method of spherical yttrium oxide powder, comprising the following steps:

[0048] (1) Preparation of initial powder of yttrium oxide precursor:

[0049] Dissolve yttrium salt-yttrium nitrate in water to obtain a concentration of 0.1mol. L -1 The aqueous solution of yttrium nitrate is 10 times of the amount of yttrium ion substance according to the amount of precipitating agent, and the concentration is 1mol. L -1 The precipitating agent solution, the precipitating agent is urea, stirred and dissolved to obtain a mixed solution, the surfactant cetyltrimethylammonium bromide (CTAB) was added according to 0.5% of the mixed solution mass, stirred and dissolved, and kept at 90°C Stir the reaction for 3 hours, use the uniform precipitation method to obtain the precipitate of the yttrium oxide precursor, centrifuge or filter to separate the precipitate; wash the precipitate twice with distilled water, then soak it with absolute ethanol once, and dry it to obt...

Embodiment 3

[0055] A preparation method of spherical yttrium oxide powder, comprising the following steps:

[0056] (1) Preparation of initial powder of yttrium oxide precursor:

[0057] Dissolve yttrium salt-yttrium nitrate in water to obtain a concentration of 0.075mol. L -1 The aqueous solution of yttrium nitrate is 0.5mol. L -1 Precipitating agent solution, the precipitating agent is urea, stirred and dissolved to obtain a mixed solution, the surfactant cetyltrimethylammonium bromide (CTAB) was added according to 0.3% of the mixed solution mass, stirred and dissolved, and kept at 92°C Stir the reaction for 2 hours, use the uniform precipitation method to obtain the precipitate of the yttrium oxide precursor, centrifuge or filter to separate the precipitate; wash the precipitate twice with distilled water, then soak it with absolute ethanol once, and dry it to obtain the yttrium oxide Precursor initial powder.

[0058] (2) Prepare the final powder of yttrium oxide precursor:

[0...

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Abstract

The invention relates to a preparation method of spherical yttrium oxide powder, and relate to a preparation method of yttrium oxide powder. The method comprises the following steps: adding a surfactant in an aqueous solution containing yttrium salt and a precipitating agent to prepare a reaction solution, wherein the yttrium salt concentration in the reaction solution is 0.05-0.1 mol.L<-1>, employing a homogeneous precipitation method to prepare a yttrium oxide precursor precipitate, after solid-liquid separating, respectively washing the precipitate by water and small molecular alcohol, processing precipitate suspending liquid by using ultrasonic dispersion, separating the suspending liquid, drying the material, and calcining the material to obtain the yttrium oxide powder composed by submicron spherical particles. The yttrium salt solution with concentration of 0.05-0.1 mol.L<-1> is taken as a reaction solution, production efficiency of yttrium oxide is obviously increased, precipitating agent amount is obviously reduced, production cost is reduced, waste water volume is reduced, and the method is in favor of the protection environment, has simple process, and is convenient for popularization and usage.

Description

technical field [0001] The invention relates to a method for preparing yttrium oxide powder, in particular to a method for preparing spherical particle yttrium oxide powder with a submicron particle size. Background technique [0002] As an important rare earth compound, yttrium oxide has unique optical and physical and chemical properties, and is widely used in advanced ceramic materials, fluorescent materials, catalysis, lasers, material doping and other fields. After the spheroidization of yttrium oxide powder particles, it has higher specific surface area, surface atomic number, surface energy, better fluidity and dispersion, and will have a broader application space. The method for preparing spherical yttrium oxide powder has been reported in the literature, and the application number is 201110100222.7 patent application has announced "a method for preparing nano-spherical yttrium oxide powder for thermal spraying". In this method, the yttrium oxide precursor prepared b...

Claims

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Application Information

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IPC IPC(8): C01F17/00
CPCC01P2004/03C01P2004/32C01P2004/62C01F17/206
Inventor 吴洪达贾佑顺
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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