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Method for preparing needle-like yttrium oxide

A needle-shaped yttrium oxide technology, which is applied in the field of preparation of needle-shaped yttrium oxide, can solve the problems such as the preparation method of dispersive needle-shaped yttrium oxide, and achieve the effect of unique shape, easy operation and broad application prospects

Inactive Publication Date: 2018-12-07
吴秀碧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, actually CN103964486A does not provide a kind of preparation method for preparing acicular yttrium oxide with good dispersion

Method used

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  • Method for preparing needle-like yttrium oxide

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Embodiment 1

[0026] A preparation method of acicular yttrium oxide, comprising the steps of:

[0027] (1) Take yttrium nitrate or yttrium chloride, prepare yttrium salt solution with a concentration of 0.1mol / L with deionized water, take ammonium carbonate and prepare an alkali solution with a concentration of 0.1mol / L with deionized water, and take complex Disodium ethylenediamine tetraacetate is mixed with deionized water to be the complexing agent solution that concentration is 0.05mol / L;

[0028] (2) Slowly add the complexing agent solution obtained in step (1) into the yttrium salt solution, and react in a water bath at 40°C for 3 hours while stirring slowly to obtain the first intermediate product, wherein the moles of the complexing agent The amount is 0.1 times the molar amount of yttrium ion;

[0029] (3) Add the first intermediate product and the alkali solution obtained in step (1) into the hydrothermal reaction kettle, control the molar ratio of yttrium ion to ammonium carbona...

Embodiment 2

[0033] A preparation method of acicular yttrium oxide, comprising the steps of:

[0034] (1) Take yttrium nitrate or yttrium chloride, and prepare an yttrium salt solution with a concentration of 0.05mol / L with deionized water, and prepare an alkali solution with a concentration of 0.1mol / L with ammonium bicarbonate and deionized water, and take the Mixture disodium edetate is mixed with deionized water to be the complexing agent solution that concentration is 0.02mol / L;

[0035] (2) Slowly add the complexing agent solution obtained in step (1) dropwise into the yttrium salt solution, and react in a water bath at 60°C for 1.5 hours while stirring slowly to obtain the first intermediate product, in which the complexing agent The molar weight is 0.5 times the molar weight of yttrium ion;

[0036] (3) Add the first intermediate product and the alkali solution obtained in step (1) to the hydrothermal reaction kettle, control the molar ratio of yttrium ion to ammonium bicarbonate ...

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Abstract

The invention discloses a method for preparing needle-like yttrium oxide. The method comprises the following steps: first reacting yttrium nitrate or yttrium chloride which serves as an yttrium sourcewith a complexing agent ethylene diamine tetraacetic acid in a water bath to obtain a sol-shaped first intermediate product; then reacting the first intermediate product with an alkali solution undera hydrothermal condition to obtain a second intermediate product yttrium carbonate; and calcining to obtain monodispersed yttrium oxide particles having micron-grade sizes and are of a needle shape with two tip ends under an electron microscope. The needle-like yttrium oxide prepared by the method has unique appearance, good dispersibility, uniform size and excellent optical performance; and thepreparation method is simple, is easy to operate, and is low in cost and wide in application prospect.

Description

technical field [0001] The invention relates to a preparation method of rare earth oxides, in particular to a preparation method of needle-shaped yttrium oxide. Background technique [0002] Yttrium is one of the most abundant rare earth elements, mainly distributed in China, the United States, Australia, India, Malaysia and Brazil, among which more than 40% are concentrated in my country. [0003] Yttrium is used extensively in industry, as the yttrium phosphor that produces the red tint on television screens, in filters for certain rays, in superconductors and superalloys, and in specialty glasses. Yttrium is resistant to high temperature and corrosion, and can be used as cladding material for nuclear fuel. Yttrium and a variety of aminocarboxyl complexing agents can form stable chelates; yttrium-aluminum garnet containing neodymium is an excellent laser material, yttrium-iron garnet is an excellent laser material, and yttrium-iron garnet and yttrium-aluminum garnet are a...

Claims

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Application Information

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IPC IPC(8): C01F17/00
CPCC01P2002/01C01P2004/10C01P2004/62C01F17/206
Inventor 不公告发明人
Owner 吴秀碧
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