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Method for preparing thorium dioxide nano material based on molten salt method and thorium dioxide nano material obtained by method

A thorium dioxide and nanomaterial technology, applied in the field of materials, can solve the problems of uneven particles, cumbersome processes, etc., and achieve the effects of uniform morphology, simple process, and promoting effective ion diffusion and chemical reaction.

Pending Publication Date: 2021-12-31
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of cumbersome process and uneven particles in the preparation method of nano-thorium dioxide materials in the above-mentioned prior art, the present invention provides a method for preparing nano-thorium dioxide materials based on molten salt method and the resulting thorium dioxide nano-materials. Thorium Oxide Nanomaterials

Method used

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  • Method for preparing thorium dioxide nano material based on molten salt method and thorium dioxide nano material obtained by method
  • Method for preparing thorium dioxide nano material based on molten salt method and thorium dioxide nano material obtained by method

Examples

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Embodiment 1

[0026] Step 1: 59 mol% lithium chloride, 41 mol% potassium chloride are used as molten salt, and the molar ratio of thorium nitrate hexahydrate to molten salt is 1:5 to form raw material ingredients.

[0027] Step 2, placing the raw materials in an alumina crucible and stirring and mixing evenly to obtain a mixture.

[0028] Step 3: Put the mixture into a box-type resistance furnace, raise the temperature to 500° C. at a rate of 10° C. / min, and calcinate for 4 hours. After the sample is completely cooled, a reaction product is obtained.

[0029] Step 4. Transfer the reaction product from the crucible to a beaker, add sufficient water to the beaker for ultrasonic dissolution, and obtain a milky white suspension.

[0030] Step 5. Suction filter the milky white suspension with a suction filtration device, then repeatedly wash it with pure water for eight times, and then dry it at 100°C to obtain thorium dioxide nanomaterials based on the molten salt method. .

Embodiment 2

[0032] This example is the same as Example 1 except that the molar ratio of thorium nitrate hexahydrate to molten salt is 1:10.

Embodiment 3

[0034] This example is the same as Example 1 except that the molar ratio of thorium nitrate hexahydrate to molten salt is 1:20.

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Abstract

The invention relates to a method for preparing a thorium dioxide nano material based on a molten salt method, wherein the method comprises the steps: forming molten salt from lithium chloride and potassium chloride according to a molar ratio of thorium nitrate hexahydrate to the molten salt of 1:5-1:80 to form raw materials; uniformly stirring and mixing the raw materials to obtain a mixture; heating the mixture to 400 DEG C-800 DEG C, calcining for 1-8 hours, and completely cooling to obtain a reaction product; adding water into the reaction product, and performing ultrasonic treatment to obtain a milky white suspension; and carrying out suction filtration on the milky white suspension by using a suction filtration device, then repeatedly carrying out suction filtration and washing by using pure water to remove unreacted raw materials, and then drying to obtain the thorium dioxide nano material. On the other hand, the invention provides the thorium dioxide nano material prepared by the method. According to the method disclosed by the invention, the preparation of monodisperse nanoscale thorium dioxide can be realized, and the thorium dioxide is low in price, clean, expandable and easy to scale.

Description

technical field [0001] The invention relates to the technical field of materials, and more specifically relates to a method for preparing thorium dioxide nanomaterials based on a molten salt method and the thorium dioxide nanomaterials obtained therefrom. Background technique [0002] Nanomaterials are not only very important hallmarks in the field of miniaturization, but also important milestones, because the nanoscale lies between the atomic and quantum realms and the overall scale. Once materials get down to the nanoscale, their physical, biological and chemical properties are largely governed by quantum physics rather than classical physics determining the bulk phase. The main reasons for this difference are increased surface area, improved chemical reactivity, and improved mechanical strength. Especially for applications in the fields of optics, magnetism and catalysis, nanomaterials have attracted a lot of attention in the scientific community. [0003] Nano thorium ...

Claims

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Application Information

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IPC IPC(8): C01F17/206C01F17/10B82Y30/00B82Y40/00
CPCC01F17/206C01F17/10B82Y30/00B82Y40/00C01P2002/72C01P2004/03C01P2004/64C01P2004/62C01P2004/52
Inventor 张强乔延波钱正华刘学阳李霖段熙雷
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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