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Method for preparing alkali type copper nitrate ultrafine powder with microwave hydrothermal method

A microwave hydrothermal method and ultra-fine powder technology are applied in copper nitrate and other directions to achieve the effects of stable process, stable quality and high quality

Active Publication Date: 2017-08-11
FOSHAN XILONG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 微波水热法可用于制备纳米氧化铜,如CN101273723A、CN101306832A、CN101407332A、CN101696027A、CN101844793A、CN104628026A、CN105271358A、CN105439190A、CN105523578A、CN105712391A公开的方法,但采用微波水热法制备碱式硝酸铜却未见报道

Method used

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  • Method for preparing alkali type copper nitrate ultrafine powder with microwave hydrothermal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Prepare 5 liters of copper nitrate aqueous solution with a concentration of 0.4mol / L, pour it into a reaction kettle with a polytetrafluoroethylene liner, and put the reaction kettle into a microwave water heater for standby;

[0022] (2) Prepare a sodium hydroxide aqueous solution with a concentration of 2mol / L;

[0023] (3) Turn on the microwave water heater, turn on the reactor stirrer, keep the reaction temperature at 60°C, and add sodium hydroxide aqueous solution dropwise to the copper nitrate aqueous solution at a rate of 3 liters / hour;

[0024] (4) When the pH of the reaction solution is 6.1, stop adding the aqueous sodium hydroxide solution dropwise, continue stirring and reacting at 60°C for 60 minutes, and turn off the microwave water heater;

[0025] (5) Let the above reaction solution stand still, pour off the supernatant, immerse the precipitate in dilute nitric acid solution with pH = 4.5, stir and wash twice, then immerse and stir wash once in absolu...

Embodiment 2

[0030] (1) Prepare 5 liters of copper nitrate aqueous solution with a concentration of 0.3mol / L, pour it into a polytetrafluoroethylene-lined reactor, and put the reactor into a microwave water heater for standby;

[0031] (2) Prepare a sodium hydroxide aqueous solution with a concentration of 5mol / L;

[0032] (3) Turn on the microwave water heater, turn on the reactor stirrer, keep the reaction temperature at 50°C, and drop the sodium hydroxide aqueous solution into the copper nitrate aqueous solution at a rate of 2 liters / hour;

[0033] (4) When the pH of the reaction solution is 6.0, stop adding the aqueous sodium hydroxide solution, continue to stir and react at 50°C for 30 minutes, and turn off the microwave water heater;

[0034] (5) Let the above reaction solution stand still, pour off the supernatant, immerse the precipitate in dilute nitric acid solution with pH=5.0, stir and wash for 3 times, then immerse and stir in anhydrous ethanol for 1 time, and dry the solid by...

Embodiment 3

[0038] (1) Prepare 5 liters of copper nitrate solution with a concentration of 0.2mol / L, pour it into a polytetrafluoroethylene-lined reactor, and put the reactor into a microwave water heater for standby;

[0039] (2) Prepare a potassium hydroxide aqueous solution with a concentration of 10mol / L;

[0040] (3) Turn on the microwave water heater, turn on the reactor stirrer, keep the reaction temperature at 40°C, and drop potassium hydroxide aqueous solution into the copper liquid at a rate of 1 liter / hour;

[0041] (4) When the pH of the reaction solution is 6.3, stop adding potassium hydroxide aqueous solution, continue to stir and react at 40°C for 40 minutes, and turn off the microwave water heater;

[0042] (5) Let the above reaction solution stand still, pour off the supernatant, immerse and stir the precipitate in dilute nitric acid solution with pH=5.5 and wash it 4 times, then immerse and stir it in absolute ethanol once, and dry the solid by centrifugation;

[0043] ...

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Abstract

The invention discloses a method for preparing alkali type copper nitrate ultrafine powder with a microwave hydrothermal method. The method comprises the steps that a copper nitrate water solution is prepared and injected into a reaction kettle with a polytetrafluoroethylene lining, the reaction kettle is placed into a microwave hydrothermal device to be heated, a sodium hydroxide or potassium hydroxide water solution is dropwise added to adjust the reaction liquid pH, the precipitate is immersed with a dilute nitric acid water solution and stirred and washed, a solid is placed into a dryer to be dried to obtain the alkali type copper nitrate ultrafine powder, and the production cost can be reduced with the method.

Description

technical field [0001] The invention relates to a preparation method of basic copper nitrate, in particular to a preparation method of basic copper nitrate ultrafine powder, belonging to the field of preparation of inorganic non-metallic materials. Background technique [0002] Basic copper nitrate is light blue powder, insoluble in water and alcohol, soluble in dilute acid and ammonia water. Basic copper nitrate is widely used in catalysts, pyrotechnics, propellants, copper product intermediates and other fields, and is an important component material in gas generating agents for automobile airbags. For gas generators and catalysts, the larger the specific surface area of ​​basic copper nitrate powder, the stronger its oxidation gas production ability and catalytic ability. With the rapid growth of the number of domestic automobiles, the market demand for automobile airbag generators will further expand, and the market prospect of basic copper nitrate products with high sp...

Claims

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Application Information

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IPC IPC(8): C01G3/08
CPCC01G3/08C01P2002/89C01P2004/03C01P2004/62
Inventor 赵策黄吟荣王立林郑安丽
Owner FOSHAN XILONG CHEM CO LTD
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