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Method for preparing copper nitride powder

A copper nitride and powder technology, applied in nitrogen-metal/silicon/boron binary compounds, bulk chemical production, nanotechnology, etc. The effect of low temperature and strong applicability

Inactive Publication Date: 2013-08-07
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material applicability of the publicly reported methods for preparing copper nitride is not too strong, and each method is specific to a specific raw material

Method used

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  • Method for preparing copper nitride powder
  • Method for preparing copper nitride powder

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Experimental program
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Effect test

Embodiment 1

[0027] Put 24.0 g of copper oxide in a reactor with a volume of 1 L, add 93 g of methanol, vacuumize the reactor to 0.03 MPa, feed 147.8 g of ammonia gas into the reactor, and the pressure in the reactor is 0.61 MPa At the same time, the reactor was heated to 210 °C, and the pressure inside the reactor was maintained at 16.4 MPa. After 2.5 h of reaction under this condition, the reactor pressure was reduced to 0.3 MPa within 0.5 h, and the reactor was naturally cooled to room temperature. The solid product in the reactor was separated, washed three times with absolute ethanol, and then vacuum-dried at 80 °C for 1.0 h to obtain 19.6 g of dark green copper nitride powder.

Embodiment 2

[0029] Take by weighing 20.0 g of copper nitrate and place it in a reactor with a volume of 1 L. After adding 144.5 g of ethanol, the reactor is airtight and then decompressed to 0.04 MPa. Then 153.8 g of liquid ammonia is put into the reactor, and the reactor is heated to 200 ℃, the pressure is 15.8 MPa, and then reacted under this condition for 2.4 h, after the reaction was completed, the pressure was reduced to 0.5 MPa, after cooling the reactor, the solid product was separated, washed three times with absolute ethanol, and vacuumed at 80 ℃ After drying, 7.1 g of dark green copper nitride powder was obtained.

Embodiment 3

[0031] 10.0 g of copper oxide and 10.0 g of copper sulfate were placed in the reactor, 116.3 g of methanol and 100.8 g of ammonium carbonate were added, the reactor was evacuated to 0.03 MPa, the reactor was heated to 190 ° C, and the pressure in the reactor was maintained at 12.5 MPa, and after reacting under this condition for 1.8 h, the reactor pressure was reduced to 0.3 MPa within 1.0 h, and the reactor was naturally cooled to room temperature. The solid product in the reactor was separated, washed three times with absolute ethanol, and then vacuum-dried at 80 °C for 1.0 h to obtain 12.8 g of dark green copper nitride powder.

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Abstract

The invention discloses a method for preparing copper nitride powder, in particular a method for preparing the copper nitride powder by utilizing copper oxides or copper salt, and belongs to a technology for chemical materials. The method comprises the following steps of: adding the copper oxides and the copper salt which serve as raw materials into a high pressure resistant reactor, exhausting air in the reactor, and adding a solvent medium and a nitridizing agent into the reactor; heating the reactor to the temperature of between 50 and 350 DEG C, keeping the pressure of the reactor between0.1 and 35.0Mpa, and reacting for 0.5 to 5.0 hours in the state; and reducing the pressure in the reactor to be 0-0.5 Mpa in a heating state, and separating solid powder so as to obtain the copper nitride powder. According to the method, the copper nitride powder is prepared in a supercritical or near-critical system, the preparation method is simple and has high applicability to the raw materials, and the prepared copper nitride is pure.

Description

technical field [0001] The invention belongs to chemical material technology, and in particular relates to a preparation method of copper nitride powder. Background technique [0002] Copper nitride (Cu 3 N) is a covalently bonded copper nitride with high resistivity, which is significantly different from Cu simple substance in terms of reflectivity to infrared and visible light. Copper nitride is a new type of electrical and optical material, which has a typical reverse rhenium trioxide structure, and has attracted much attention in the fields of optical storage devices and high-speed integrated circuits. [0003] Preparation of Cu by reactive sputtering, vapor deposition and plasma spraying 3 The preparation process of N thin film is relatively mature, but there are few literature reports on the preparation method of copper nitride powder. Currently, on the preparation of Cu 3 The literature reports on N powder include: [0004] "Chinese Science Series E: Technical Sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/06B82Y40/00
CPCY02P20/54
Inventor 于三三李双明许灿马婧舒李文秀
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY