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Hydrogen fluoride gadolinium oxide as well as preparation method and application thereof

A technology of gadolinium oxide and hydrogen fluoride, applied in the field of materials, can solve the problems of destroying the ozone layer and low efficiency

Inactive Publication Date: 2021-03-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional gas compression refrigeration technology has been widely used in people's daily life, but with the continuous improvement of people's living standards, the low efficiency of traditional gas compression refrigerators can no longer meet people's requirements
At the same time, the refrigerant Freon used in traditional refrigerators will seriously damage the ozone layer. People began to explore a new type of refrigeration technology, which has the two advantages of high efficiency, energy saving and no environmental pollution.

Method used

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  • Hydrogen fluoride gadolinium oxide as well as preparation method and application thereof
  • Hydrogen fluoride gadolinium oxide as well as preparation method and application thereof
  • Hydrogen fluoride gadolinium oxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] (1) Add GdCl to 5ml of water 3 (0.371g, 1.0mmol) and HF solution (0.043mL, containing HF 1mmol) to obtain a mixed solution;

[0075] (2) Add NaOH aqueous solution (2.5mol L -1 ) to a system pH of about 7.

[0076] (3) The above product was transferred to a polytetrafluoroethylene-lined pressure-resistant stainless steel reactor with a volume of 25 mL, heated to 200° C., and kept at this temperature for 3 days (72 hours). After hydrothermal treatment, the obtained product was separated from solid and liquid, and the solid was collected, washed three times with deionized water, and then air-dried at 100° C. overnight to obtain the solid material of Example 1.

Embodiment 2

[0078] The difference between Example 2 and Example 1 is that the HF aqueous solution used in step (1) has a volume of 0.066 mL, which is equivalent to containing 1.5 mmol of HF.

[0079] Other steps and parameters are the same as in Example 1 to obtain the solid material in Example 2.

Embodiment 3

[0081] The difference between Example 3 and Example 1 is that the HF aqueous solution used in step (1) has a volume of 0.086 mL, which is equivalent to containing 2 mmol of HF.

[0082] Other steps and parameters are the same as in Example 1 to obtain the solid material in Example 3.

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Abstract

The invention relates to hydrogen fluoride gadolinium oxide as well as a preparation method and application thereof. The gadolinium oxyfluoride has the following general formula: Gd (OH) yF3-y, wherein y is equal to 0.5-2.5.

Description

technical field [0001] The invention relates to the field of materials, in particular to gadolinium oxyhydrogen fluoride and its preparation method and application. Background technique [0002] Traditional gas compression refrigeration technology has been widely used in people's daily life, but with the continuous improvement of people's living standards, the low efficiency of traditional gas compression refrigerators can no longer meet people's requirements. At the same time, the refrigerant Freon used in traditional refrigerators will seriously damage the ozone layer. People began to explore a new type of refrigeration technology, which has the two advantages of high efficiency, energy saving and no environmental pollution. [0003] In 1997, the Ames Laboratory of the US Department of Energy discovered that an alloy composed of Gd, Si, and Ge could exhibit a huge magnetocaloric effect at room temperature. A new type of refrigerator based on magnets. Compared with the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/30C01F17/10F25B21/00
CPCC01P2002/72C01P2004/03C01P2006/42C01F17/10C01F17/30F25B21/00Y02B30/00
Inventor 龙腊生徐侨飞
Owner XIAMEN UNIV
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