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Method for preparing elemental materials by reduction of single-atom carbon

A technology of atomic carbon and single substance, applied in the field of materials, can solve the problems of high energy consumption, poor crystallinity, and high cost, and achieve the effect of high energy consumption, low cost, and high cost

Active Publication Date: 2021-10-01
孙旭阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods generally require high-temperature reaction, high energy consumption, and high cost. For example, the temperature of blast furnace ironmaking using carbothermal reduction is 1000 ° C to 1400 ° C, the temperature of silicon production by the aluminothermic reduction method is 1600 ° C ~ 1700 ° C, and ferrosilicon ( The Pidgeon method of magnesium smelting using Si-Fe) as a reducing agent not only requires high temperature of 1200 ° C ~ 1250 ° C, but also requires high vacuum (1 ~ 13Pa) conditions
In addition, the crystallinity of the elemental substance is not good, and it is generally polycrystalline or amorphous

Method used

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  • Method for preparing elemental materials by reduction of single-atom carbon
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  • Method for preparing elemental materials by reduction of single-atom carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 30g of nickel oxide NiO was ball milled into powder.

[0028] Place a flat-bottomed tank container in the vacuum chamber, put 500gMgCl in the flat-bottomed tank container 2 Heat to above 900°C to form a molten salt; add 30g NiO powder (as elemental Ni precursor compound) gradually from the surface of the molten salt, and use a stirring device to uniformly disperse the powder in the melt while the NiO powder is settling; at the same time, the organic carbon source The acetylene gas is continuously fed into the molten salt, and the high temperature makes the acetylene cracked into atomic carbon and hydrogen-containing gas, the gas is released, the atomic carbon dissolves and diffuses in the molten salt, and the atomic carbon reduces the NiO dispersed in the melt to form Ni; the nickel powder sinks to At the bottom of the high-temperature melt, cool to room temperature, first dissolve the cooled crystals of the melt with water and wash away MgCl 2 , filtered to obtain a m...

Embodiment 2

[0031] Place a square flat-bottomed container in the vacuum chamber, which contains a Bi / In alloy (Bi:In=21.5:78.5, in terms of atomic fraction; at this time, the melting point of the alloy is only 72°C), and the alloy is heated to 700°C to form a melt ; using a vertical transfer screw to transfer ZrF 4 (melting point 640°C, as elemental Zr precursor compound) powder is transported to the container and melted at the same time; pressurized acetylene is passed into the alloy melt through a circular tube, at this high temperature, acetylene is cracked into atomic carbon, atomic carbon is dissolved and reduced to melt ZrF in body 4 And generate Zr simple substance. Since the density of Bi / In alloy is close to 10g / cm 3 , Zr finally floated to the surface of the high-temperature melt; the floating product was removed from the melt surface with a horizontal scraper and collected; a small amount of Bi / In alloy stained on the obtained solid crystal was washed Ultrasonic washing is a...

Embodiment 3

[0033] 500g of anhydrous borax (Na 2 B 4 o 5 (OH) 4 ), heated to 950°C and melted into glass. 100g of organic carbon source bisphenol A is transported into the container with a vertical conveying screw while stirring to make it evenly dispersed in the melt; because the melt contains acidic oxide B 2 o 3 (as elemental B precursor compound), bisphenol A is completely cleaved, cracked into atomic carbon, atomic carbon dissolves and reduces B in the melt 2 o 3 Generate elemental boron B. After cooling to room temperature, the elemental boron B and the recrystallized anhydrous borax are repeatedly washed and filtered with water, and pure elemental boron B is finally obtained by utilizing the easy solubility of anhydrous borax in water.

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Abstract

The invention belongs to the field of materials, and relates to a method for preparing elemental materials by reducing single-atom carbon. The method includes: in the melt medium, at 300°C to 1500°C, the organic carbon source is cracked into atomic carbon and dissolved in the melt medium, and the atomic carbon is oxidized with the elemental precursor compound placed in the melt medium In the reduction reaction, the precursor compound is reduced to an element, and the element is supersaturated and crystallized in the melt medium to obtain an element material. The method of the invention can prepare high-quality, self-crystallized single substance materials at a lower temperature and at a lower cost.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing elemental materials by reducing single-atom carbon. Background technique [0002] Elemental materials include metals and nonmetals. Elemental materials, as special functional materials and structural materials, are the basic materials of various high-end manufacturing industries. The products are widely used in high-tech fields such as aviation, aerospace, shipbuilding, nuclear industry, electronics, automobiles, and new energy. However, substances in nature rarely exist in the form of simple substances, and mostly exist in the form of compounds such as oxides, carbides, nitrides, sulfides, and various acid salts. Therefore, it is necessary to reduce the compounds to obtain simple substances. The most important methods are thermal reduction and electrolysis. Among them, metallothermal methods such as carbothermal method, silicothermal method, aluminothermic metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B5/10C22B23/02C22B34/14C01B35/02C01B33/025
CPCC22B5/10C22B23/02C22B34/14C01B35/023C01B33/025C22B5/12C01P2002/85C01P2004/03
Inventor 孙旭阳
Owner 孙旭阳
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