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A kind of method for preparing low surface activity cerium deuteride

A low surface activity, cerium deuterium technology, applied in chemical instruments and methods, inorganic chemistry, metal hydrides, etc., can solve the problems of high surface activity of cerium deuterium, easy to be corroded by air, difficult to apply, etc., to achieve modified The effect of easy availability of reagents, simple modification and preparation methods, and broad market prospects

Active Publication Date: 2022-04-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that cerium deuteride has high surface activity, is easily corroded by air, and is unstable under high temperature conditions, resulting in difficult application, and provides a method for preparing cerium deuteride with low surface activity. The method operates Simple, the obtained modified cerium deuteride has good surface stability;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 2.5kg of anhydrous sodium sulfate in a 200°C drying oven for 2.2 hours, take it out after cooling to room temperature, then add 2.3kg of ethyl acetate to anhydrous sodium sulfate, and filter after standing for 13 hours; then take 10ml to process of ethyl acetate, 0.5g of benzophenone powder is added thereto, and the solution is blue, and the blue is getting darker and darker, namely obtaining 2283g of anhydrous ethyl acetate;

[0023] In a vacuum glove box, 120g of cerium deuteride powder was added to 800g of anhydrous ethyl acetate, ultrasonically dispersed for 2.6 hours, then filtered, and left to stand in a vacuum glove box at 30°C for 1.4 hours to obtain 118g of pretreated Ce deuteride powder;

[0024] In a vacuum glove box, 2.4g of polyurea component A was added to 1.2kg of anhydrous ethyl acetate, and stirred for 2.7 hours in an ultrasonic state at a speed of 320r / min to obtain a mixed solution C; then 118g of pretreated Add the cerium deuteride powder to the...

Embodiment 2

[0028] Put 13.6kg of anhydrous sodium sulfate in a 200°C drying oven for 2.4 hours, take it out after cooling to room temperature, then add 10.8kg of ethyl acetate to anhydrous sodium sulfate, and filter after standing for 12 hours; then take 10ml to process of ethyl acetate, 0.5g of benzophenone powder is added thereto, the solution appears blue, and the blue color is getting deeper and deeper, namely obtaining 10764g anhydrous ethyl acetate;

[0029] In a vacuum glove box, 560g of cerium deuteride powder was added to 2.9kg of anhydrous ethyl acetate, ultrasonically dispersed for 3.3 hours, then filtered, and left to stand in a vacuum glove box at 30°C for 2.4 hours to obtain 557g of pretreated Ce deuteride powder;

[0030] In a vacuum glove box, 14g of polyurea component A was added to 5.4kg of anhydrous ethyl acetate, and stirred for 3.8 hours in an ultrasonic state at a speed of 360r / min to obtain a mixed solution C; then 557g of pretreated Add cerium deuteride powder into ...

Embodiment 3

[0034] Put 14.7kg of anhydrous sodium sulfate in a 200°C drying oven for 2.6 hours, take it out after cooling to room temperature, then add 8.6kg of ethyl acetate to anhydrous sodium sulfate, and filter after standing for 16 hours; then take 10ml to process of ethyl acetate, 0.5g of benzophenone powder is added thereto, and the solution is blue, and the blue color is getting darker, namely obtaining 8592g anhydrous ethyl acetate;

[0035] In a vacuum glove box, 700g of cerium deuteride powder was added to 3.58kg of anhydrous ethyl acetate, ultrasonically dispersed for 4.1 hours, then filtered, and left standing in a vacuum glove box at 30°C for 1.9 hours to obtain 695g of pretreated cerium deuteride powder;

[0036] In a vacuum glove box, 18g of polyurea component A was added to 5kg of anhydrous ethyl acetate, and stirred for 4.5 hours in an ultrasonic state at a speed of 420r / min to obtain a mixed solution C; then 695g of pretreated Add cerium deuteride powder into the mixed...

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Abstract

The invention relates to a method for preparing cerium deuteride with low surface activity, which belongs to the field of material science and nuclear technology. The purpose is to solve the problem that cerium deuteride has high surface activity, is easily corroded by air, and is unstable under high temperature conditions, which leads to difficult application. The surface of the obtained modified cerium deuteride can be well covered with a uniform layer of polyurea, which significantly reduces the surface activity of the cerium deuteride, so that it can be stored stably for a long time in the natural environment without deterioration, and it will not deteriorate below 200 ° C. It will react with air to cause spontaneous combustion, which is beneficial to the application of cerium deuteride in high energy density materials and nuclear materials, and can be used as a carrier of clean energy, opening a new door to world energy applications; the modification and preparation methods are simple, and the modification The reagents are easy to obtain, and the operation is simple; the preparation process does not discharge three wastes, is universal, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a method for preparing cerium deuteride with low surface activity, which belongs to the field of material science and nuclear technology. Background technique [0002] In today's world, the international situation is complex, and the energy issue has always been the key issue that curbs the rapid development of various countries and regions. Energy, materials and information technology determine the direction of world development. However, the serious pollution and non-renewability of fossil energy forces humans to look for new energy sources to replace them. Without new energy sources, the world order will fall into chaos. In order to realize the sustainable development of human society, it has become a consensus to research and develop various new green and renewable energy sources. Governments of all countries are committed to developing new energy sources that can replace fossil energy sources. Deuterium (deuterium) is an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B6/00
CPCC01B6/00
Inventor 刘吉平李年华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY