Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of metallic potassium

A technology of potassium metal and potassium salt, which is applied in the field of simple metal synthesis, can solve the problem of high energy consumption, and achieve the effects of low cost, simple and easy to control method, and excellent electrochemical performance

Active Publication Date: 2022-07-19
HEFEI UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are two major problems in the preparation process: 1. The prepared potassium contains a large amount of sodium, and further fractionation is required to obtain potassium with high purity; 2. The preparation process is usually carried out at 850 ° C, and the energy consumption is relatively high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of metallic potassium
  • A kind of preparation method of metallic potassium
  • A kind of preparation method of metallic potassium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Under an argon atmosphere, 0.1031 g of lithium hydride and 0.9426 g of potassium chloride were added to a vertical tube furnace, sealed and evacuated. The mixture was raised to 550°C at a heating rate of 10°C / min and held for 2 h. After the reaction is completed and cooled, the gas in the vertical tube furnace is first collected, and then the solid product is removed from the upper end of the vertical tube furnace under the protection of an argon atmosphere (the temperature at the upper end of the vertical tube furnace is lower, and potassium metal will be preferred. It is taken out from the upper end deposition) to obtain metallic potassium.

[0024] figure 1 The X-ray diffraction pattern of the product prepared for Example 1, from figure 1 It can be seen that the position of the diffraction peak of the sample completely corresponds to the PDF#-01-0500 card of potassium, indicating that the present invention has successfully synthesized metal potassium.

[0025] wit...

Embodiment 2

[0030] Under a nitrogen atmosphere, 0.1031 g of lithium hydride and 0.5 g of potassium chloride were added to a vertical tube furnace, sealed and evacuated. The mixture was raised to 600°C at a heating rate of 5°C / min and held for 6 h. After the reaction is completed and cooled, the gas in the vertical tube furnace is first collected, and then the solid product is taken out from the upper end of the vertical tube furnace under the protection of helium gas atmosphere to obtain metallic potassium.

Embodiment 3

[0032] Under a nitrogen / argon mixed atmosphere, 1 g of lithium hydride and 8 g of potassium chloride were added to a vertical tube furnace, sealed and evacuated. The mixture was raised to 450°C at a heating rate of 6°C / min and kept for 10 h. After the reaction is completed and cooled, the gas in the vertical tube furnace is first collected, and then the solid product is taken out from the upper end of the vertical tube furnace under the protection of a mixed atmosphere of helium / argon to obtain potassium metal.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for preparing metal potassium, which relates to the technical field of metal element synthesis, uses lithium hydride and potassium salt as raw materials, and under the protection of an inert atmosphere, mixes lithium hydride and potassium salt in a molar ratio of 1:0.1 to 10, and places them in a vertical tube. In a furnace, the mixture is heated to 200-700° C. under vacuum, and kept for 0.5-24 h. After the reaction is completed and cooled, the product at the upper end of the vertical tube furnace, namely metal potassium element, is taken out under the protection of an inert atmosphere. The invention utilizes lithium hydride and potassium salt to react under heating conditions to generate potassium element, which greatly reduces the synthesis temperature of potassium. The method is simple and easy to control, green and environmentally friendly, low in cost, and easy to realize industrialized production. The prepared metal potassium can be applied to the fields of potassium-sodium alloy and potassium ion battery, and the prepared battery has excellent electrochemical performance.

Description

technical field [0001] The invention relates to the technical field of metal element synthesis, in particular to a preparation method of metal potassium. Background technique [0002] As an active alkali metal, potassium metal is widely used in material chemical industry, biomedicine, potassium-sodium alloy, electronic information, potassium-ion battery and other fields. At present, the mainstream preparation process in the industry is to react sodium metal with potassium chloride at 850 °C (Na+KCl→NaCl+K), and obtain metal potassium by one-step fractional distillation. This reaction utilizes the difference in melting and boiling point between potassium (760°C) and sodium (883°C) to achieve the preparation of potassium. [0003] However, there are two major problems in this preparation process: 1. The prepared potassium contains a large amount of sodium, which requires further fractionation to obtain potassium with higher purity; 2. The preparation process is usually carrie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B26/10
CPCC22B26/10
Inventor 梁升陈捷刘伶俐周宁宁胡磊张全争王黎丽梁德伟
Owner HEFEI UNIV