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Rare earth doped spinel material with electromagnetic wave adjustment and control function and preparation thereof

A rare earth doping and spinel technology, which is applied in manganese compounds, manganate/permanganate, inorganic chemistry, etc., can solve the problems of high raw material cost, many preparation steps, and complicated process of infrared radiation materials, and achieve Improved light absorption performance, easy operation, and stable crystal structure

Active Publication Date: 2021-09-28
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of spinel structure infrared radiation materials by this method has the characteristics of high raw material cost, many preparation steps, complicated process and difficult control.

Method used

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  • Rare earth doped spinel material with electromagnetic wave adjustment and control function and preparation thereof
  • Rare earth doped spinel material with electromagnetic wave adjustment and control function and preparation thereof
  • Rare earth doped spinel material with electromagnetic wave adjustment and control function and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 A rare earth-doped spinel material with electromagnetic wave regulation function, its chemical composition formula is CuCrMnO 4 . Concrete preparation process is as follows:

[0028] Weigh CuO (15.910g) and Cr respectively according to the molar ratio of metal elements 1:1:1 2 o 3 (15.199g), MnO 2 (17.388g) powder; according to the mass ratio of ball: material: water 2:1:3, pour the ball mill beads, raw materials and ultra-pure water into the ball mill pot respectively; place the ball mill pot on the ball mill station, and proceed for 1 hour Ball milling at a speed of 300r / min, followed by a pause of 10 minutes, as a ball milling cycle, after 10 minutes, ball milling for 1 hour at a speed of 300r / min, and a total of 5 hours of ball milling to obtain a mixed powder; then the mixture powder obtained after ball milling was dried , Grinding; then the ground mixture powder is heated to 600°C for calcination in the air atmosphere of a box-type resistance furnace...

Embodiment 2

[0030] Embodiment 2 A kind of rare earth doped spinel material with electromagnetic wave control function, its chemical composition formula is CuCrMn 0.99 Ce 0.01 o 4 . Concrete preparation process is as follows:

[0031] Weigh CuO (15.910g) and Cr respectively according to the molar ratio of metal elements 1:1:0.99:0.01 2 o3 (15.199g), MnO 2 (17.214g), CeO 2 (0.344g) powder; according to the mass ratio of ball: material: water 4:1:3, pour the ball mill beads, raw materials and ultra-pure water into the ball mill tank respectively; place the ball mill tank on the ball mill station for 1 hour Ball milling at a speed of 450r / min, followed by a pause of 10 minutes, as a ball milling cycle, after 10 minutes, ball milling for 1 hour at a speed of 450r / min, and a total of 8 hours of ball milling to obtain a mixed powder; then the mixture powder obtained after ball milling was dried , Grinding; then the ground mixture powder is heated to 900°C for calcination in the air atmosph...

Embodiment 3

[0034] Example 3 A rare earth-doped spinel material with electromagnetic wave regulation function, its chemical composition formula is CuCrMn 0.99 La 0.01 o 4 . Concrete preparation process is as follows:

[0035] Weigh CuO (15.910g) and Cr respectively according to the molar ratio of metal elements 1:1:0.99:0.01 2 o 3 (15.199g), MnO 2 (17.214g), La 2 o 3 (0.326g) powder; according to the mass ratio of ball: material: water 4:1:3, pour the ball mill beads, raw materials and ultra-pure water into the ball mill tank respectively; place the ball mill tank on the ball mill station for 1 hour Ball milling at a speed of 400r / min, followed by a pause of 10 minutes, as a ball milling cycle, after 10 minutes, ball milling for 1 hour at a speed of 400r / min, and a total of 9 hours of ball milling to obtain a mixed powder; then the mixture powder obtained after ball milling was dried , Grinding; then the ground mixture powder is heated to 875°C for calcination in the air atmospher...

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Abstract

The invention relates to a rare earth doped spinel material with an electromagnetic wave adjustment and control function, the material has a spinel crystal structure, the particle diameter of the material is 100-700nm, the chemical general formula of the material is CuCrMn1-yREyO4, RE is Ce or La, and y is more than or equal to 0 and less than or equal to 0.20; and the solar energy absorptivity at the wave band of 0.3-2.5 microns and the normal infrared emissivity at the wave band of 2-22 microns are adjusted and controlled by adopting electromagnetic waves. Meanwhile, the invention also discloses a preparation method of the material. The rare earth doped spinel material disclosed by the invention can be adjusted and controlled by electromagnetic waves, so that the solar energy absorptivity at the wave band of 0.3-2.5 microns is greater than or equal to 0.87, the normal infrared emissivity at the wave band of 2-22 microns is greater than or equal to 0.92, and the rare earth doped spinel material has good thermal stability in air.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a rare-earth-doped spinel material with electromagnetic wave regulation function and its preparation. Background technique [0002] With the development of the economy and the progress of society, people put forward higher and higher requirements for energy, and finding new energy has become an urgent issue facing mankind. The development and research of new renewable energy will become the focus and trend of global energy development. Concentrated solar thermal power generation system uses collectors to heat water or other working media to convert solar radiation energy into high-temperature heat energy, and then generate power through a thermal cycle process. It is a clean and environmentally friendly renewable power generation technology that will become the future One of the ideal ways to solve energy problems. Solar absorbing materials are the core materials for realizing ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/12
CPCC01G45/1207C01P2002/72C01P2004/03C01P2006/40C01P2006/42C01P2002/32
Inventor 高祥虎王伟明高峰刘福国刘刚何成玉
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI