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Preparation method of nano yttrium oxide

A technology of nanometer yttrium oxide and inorganic acid salts, applied in chemical instruments and methods, inorganic chemistry, rare earth metal compounds, etc., to achieve the effects of simple process, low production cost and high yield

Inactive Publication Date: 2003-02-05
施越群
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a method for preparing nano-yttrium oxide with low cost, suitable for industrial production, simple process and high purity and uniform particle size for the defects of the existing nano-material preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Preparation of Ycl from hydrochloride 3 (Y 2 o 3 >99.99%), the preparation concentration is 0.5mol / L, add the calculated amount of dispersant (such as polyethylene glycol), and the dropwise concentration is 0.4mol / L Na 2 CO 3 Solution, a precipitate is formed and filtered out, washed with deionized water, added a calculated amount of alcohol (such as n-butanol) and stirred evenly, dried, heated to 400-1000 ° C, kept for 2 hours, taken out and cooled, and obtained Nano Y 2 o 3 Powder. TEM test particle size is 20-80nm.

Embodiment 2

[0014] Preparation of Ycl from hydrochloride 3 (Y 2 o 3 >99.99%), the preparation concentration is 0.4mol / L, add the calculated amount of dispersant (such as polyethylene glycol), and the dropwise concentration is 0.4mol / L NH 4 HCO 3 Solution, a precipitate is formed, filtered, washed with deionized water, mixed with a calculated amount of alcohol (such as ethanol), dried, heated to 400-1000 ° C, kept for 2 hours, taken out and cooled to obtain nanometer yttrium oxide. TEM test particle size is 20-80nm.

Embodiment 3

[0016] Preparation of Y(NO 3 ) 3 (Y 2 o 3 >99.99%), the preparation concentration is 0.4mol / L, add the calculated amount of dispersant (such as polyethylene glycol), drop the concentration of 0.4mol / LNaOH solution, generate precipitate, filter, wash with deionized water, Add a calculated amount of alcohol (such as n-butanol) and stir evenly, dry, heat up to 400-1000°C, keep it warm for 2 hours, take it out and cool it down to obtain nanometer yttrium oxide. TEM test particle size is 20-80nm.

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Abstract

The preparation method of nano-grade yttrium oxide in rare earth oxide includes the following steps: preparing yttrium-containing inorganic acid salt aqueous solution by adopting hydrochloride or nitrate; regualting the concentration of the yttrium-untaining inorganic salt to 0.1-1.0 mol / L; adding prepared precipitant whic can be carbonate or bicarbonate or basic salt with a certain concentration; washing precipitate with deionized water; adding alcohol-like material which can be n-bulyl alcohol or ethyl alcohol to make surface modification; drying, igniting and heating, and decomposing to obtain the nano rare earth yttrium oxide. The dispersing agent added in the course of preparing yttrium-containing inorganic acid salt aqueous solution or adding precipitant can be polyethylene glycol.

Description

1. Technical field: [0001] The invention belongs to the field of rare earth materials, in particular to the preparation of nanoscale materials of yttrium oxide in rare earth oxides. 2. Background technology: [0002] Nanomaterials refer to particle materials with a particle size between 1-100nm. Since its geometric size is in the transition zone between atomic clusters and macroscopic objects, it is a typical mesoscopic system. It has unique characteristics in light, electricity, catalysis, and biology, and has a very broad application prospect in many fields, such as rare earth fluorescent materials, catalysts for automobile exhaust purifiers, etc. [0003] Currently produced such as nano-yttrium oxide Y 2 o 3 The methods for nano-rare earth materials are mainly divided into two categories: physical and chemical methods or three categories: gas phase, solid phase, and liquid phase methods. The physical methods mainly include: 1. Vacuum condensation method, which uses vac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00
Inventor 施越群
Owner 施越群
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