Method for batch synthesis of rare earth nano oxide granular material

A technology of nanometer oxides and granular materials, which is applied in the preparation/processing of rare earth metal oxides/hydroxides, rare earth metal compounds, and lanthanide oxides/hydroxides, etc., can solve the application demand gap of nanometer rare earth oxides and other problems, to achieve the effect of solving uncontrollable particles and agglomeration, short and easy process flow, and simple operation

Pending Publication Date: 2021-08-10
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, nano-rare earth oxide materials are indispensable raw materials for the development of high-tech and national defense industries. However, currently limited by the development of preparation technology, there is still a large gap between the performance of nano-rare earth oxides and the application requirements of high-tech

Method used

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  • Method for batch synthesis of rare earth nano oxide granular material
  • Method for batch synthesis of rare earth nano oxide granular material
  • Method for batch synthesis of rare earth nano oxide granular material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Take 10g of cerium chloride and mix it with sodium carbonate and grind it into a uniform powder, wherein the sodium chloride ratio is 1:2 and 1:1. The powder was placed in a muffle furnace, the temperature was raised to 900°C at a rate of 5°C / min, the heat treatment time was 3 hours, and the temperature was lowered to room temperature. Remove the white sample.

[0037] Take 10g of cerium chloride and mix it with sodium bicarbonate and grind it into a uniform powder, wherein the sodium chloride ratio is 1:2 and 1:1. The powder was placed in a muffle furnace, the temperature was raised to 900°C at a rate of 5°C / min, the heat treatment time was 3 hours, and the temperature was lowered to room temperature. Remove the white sample.

[0038] The specific sample number of this experiment is shown in Table 1.

[0039] Table 1

[0040] Sample No. experimental reagent sodium chloride ratio 1 Cerium Chloride and Sodium Carbonate 1:2 2 Cerium Chloride ...

Embodiment 2

[0043] Take 10g of cerium chloride and mix it with potassium carbonate and grind it into a uniform powder, wherein the potassium chloride ratio is 2:1 and 1:1. The powder was placed in a muffle furnace, the temperature was raised to 900°C at a rate of 5°C / min, the heat treatment time was 3 hours, and the temperature was lowered to room temperature. Remove the white sample.

[0044] Take 10g of cerium chloride and mix it with potassium bicarbonate and grind it into a uniform powder, wherein the potassium chloride ratio is 2:1 and 1:1. The powder was placed in a muffle furnace, the temperature was raised to 900°C at a rate of 5°C / min, the heat treatment time was 3 hours, and the temperature was lowered to room temperature. Remove the white sample.

[0045] The specific sample number of this experiment is shown in Table 2.

[0046] Table 2

[0047] Sample No. experimental reagent Chloride Potassium Ratio 5 Cerium Chloride and Potassium Carbonate 2:1 6...

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Abstract

The invention discloses a method for batch synthesis of a rare earth nano oxide particle material, which comprises the following steps: uniformly mixing a rare earth chloride precursor with carbonate/bicarbonate, and carrying out high-temperature treatment in an air/oxygen atmosphere to obtain rare earth oxide nano-scale, micron-scale or submicron-scale powder. According to the method, controllable batch preparation of the nano rare earth oxide powder material is realized, particle aggregation is effectively prevented, the problems of uncontrollable particles and aggregation in the high-temperature roasting process caused by conventional salt are effectively solved, and meanwhile, the nano rare earth oxide powder material is effectively kept in sphere-like distribution.

Description

technical field [0001] The invention relates to the technical field of nano rare earth oxide powder metallurgy and materials, in particular to a method for synthesizing rare earth nano oxide particle materials in batches. Background technique [0002] The development of high technology has higher and higher requirements for rare earth materials. In order to develop new properties of rare earth elements, especially optical, electrical, and magnetic properties, rare earth compound materials with high purity and special physical properties are required. The conventional purification methods of rare earth compounds mainly include the following methods: solvent extraction, ion exchange chromatography, extraction chromatography, redox method and separation of rare earth elements and non-rare earth impurities. The solvent extraction method can generally obtain products with a purity of 2N to 4N, and some elements such as La and Y can reach a purity of 5N to 6N. Ion exchange method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/206C01F17/10B82Y40/00C01F17/235
CPCC01F17/206C01F17/10B82Y40/00C01F17/235C01P2004/03C01P2004/51
Inventor 程义巫圣喜王昱昊
Owner CENT SOUTH UNIV
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