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Method for preparing zinc cyanide nanomaterials by using non-toxic raw materials

A nano-material, zinc cyanide technology, applied in the field of green preparation, can solve the problem of toxic reaction time and achieve the effect of short reaction time

Inactive Publication Date: 2012-01-25
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The raw materials used in the above methods are toxic and the reaction time is long

Method used

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  • Method for preparing zinc cyanide nanomaterials by using non-toxic raw materials
  • Method for preparing zinc cyanide nanomaterials by using non-toxic raw materials
  • Method for preparing zinc cyanide nanomaterials by using non-toxic raw materials

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Zinc particles with a particle size of 1 micron to 1 mm are pressed into shape at a pressure of 1 MPa to 2 GPa. The pressed block is used as raw material, the pressure of argon is 0.05Mpa, the cathode used is graphite, and the volume of the studio is about 70dm 3 , add 25 milliliters of ethanol as carbon source, the electric current that produces electric arc discharge is 100A, and voltage is 12~28V. The distance between the zinc raw material and the arc starting point is 2 cm, that is, placed with figure 1 Shown at a. After the arc is extinguished, put in the air for passivation, the passivation time is 5 hours, and the hexagonal zinc / cubic zinc cyanide nanopowder material is deposited on the water cooling wall. image 3 It is the X-ray diffraction spectrum of the hexagonal zinc / cubic zinc cyanide nanopowder material deposited on the water wall, and the diffraction peak marked as zinc in the figure. The small peak at about 21° is zinc cyanide. Figure 4 It is a sca...

Embodiment 2

[0034] Zinc particles with a particle size of 1 micron to 1 mm are pressed into shape at a pressure of 1 MPa to 2 GPa. The pressed block is used as raw material, the pressure of argon is 0.05Mpa, the cathode used is graphite, and the volume of the studio is about 70dm 3 , adding 25 ml of alcohol as a carbon source, the current of arc discharge is 60A, and the voltage is 12-28V. The distance between the zinc raw material and the arc starting point is 2 cm, that is, placed with figure 1 Shown at a. After the arc is extinguished, put in the air for passivation, the passivation time is 5 hours, and the hexagonal zinc / cubic zinc cyanide nanopowder material is deposited on the water cooling wall. Figure 5 It is the X-ray diffraction spectrum of the hexagonal zinc / cubic zinc cyanide nanopowder material deposited on the water wall, and the diffraction peak marked as hexagonal zinc in the figure. The small peak indicated by the arrow is cubic zinc cyanide. Figure 6 It is a scanni...

Embodiment 3

[0036] Zinc particles with a particle size of 1 micron to 1 mm are pressed into shape at a pressure of 1 MPa to 2 GPa. The pressed block is used as the raw material, the argon pressure is 0.05Mpa, the cathode used is graphite, 25ml of alcohol is added as the carbon source, the arc discharge current is 100A, and the voltage is 12-28V. The distance between the zinc raw material and the arc starting point is 6 cm, that is, place the figure 1 Shown at c. After the arc is extinguished, put in the air for passivation, the passivation time is 5 hours, and the cubic zinc cyanide / hexagonal zinc nanopowder material deposited on the water wall. Figure 9 It is the X-ray diffraction spectrum of the zinc cyanide / zinc nanopowder material deposited on the upper cover, and the diffraction peak marked as cubic zinc cyanide is shown in the figure. The small peak indicated by the arrow is hexagonal zinc. It is clear that cubic zinc cyanide is the main product. Figure 10 It is a scanning ele...

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Abstract

The invention provides a method for preparing zinc cyanide nanomaterials by using non-toxic raw materials, which adopts improved technological conditions and preparation technology that uses arc discharge to generate plasma, zinc granule and graphite as anode consumption components, and the graphite as cathode. The preparation is carried out in atmosphere of argon and ethanol; after the preparation, vacuumizing is carried out immediately; then air is insufflated for passivating for 1-300 hours, and finally powder depositing on a working chamber wall is collected. By using the method, zinc cyanide of nanometer size and zinc cyanide / zinc nano powder materials can be obtained steadily in large bulk. The preparation method of the invention uses the non-toxic raw materials and has short reaction time, thus being a fast and environment-friendly preparation method.

Description

technical field [0001] The present invention relates to metal cyanide (Zn(CN) 2 ) nano-powder material technology, especially provides a green preparation method of using non-toxic raw materials to prepare highly toxic inorganic zinc cyanide nano-powder material. Background technique [0002] Zinc cyanide has many uses, and can be used in electroplating, organic synthesis, medicine and pesticide manufacturing, for example: Chinese patent 99112474. Zinc application. [0003] Because it is a highly toxic inorganic substance and the raw materials used in the preparation method are also inorganic and highly toxic, its preparation is subject to certain restrictions. [0004] The traditional preparation method uses sodium cyanide and zinc chloride as raw materials, dissolves them separately to synthesize zinc cyanide, and obtains the product after washing and drying. Zinc cyanide is obtained by reacting zinc acetate and acetone cyanohydrin as raw materials in water for 2 days, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/08C01C3/08
Inventor 王振华耿殿禹胡卫进康殿继李达张志东
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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