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A kind of nickel boride powder with network structure and preparation method thereof

A network structure, nickel boride technology, applied in the direction of boron/boride, metal boride, etc.

Active Publication Date: 2018-08-24
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, crystalline Ni-B powders with porous or network structure have not been reported yet.

Method used

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  • A kind of nickel boride powder with network structure and preparation method thereof
  • A kind of nickel boride powder with network structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix micron-sized metal nickel powder and amorphous boron powder (molar ratio 3:1) with 10 times the mass of sodium chloride / potassium chloride (molar ratio 1:1) and put them into a corundum crucible. Heated to 1000°C under the protection of argon, kept warm for 1 hour, and cooled naturally, then soaked the product in 1.0mol / L hydrochloric acid for 2 hours, filtered, washed with water and ethanol for several times, and dried to obtain Ni with a network structure. 3 B powder.

[0021] figure 1 Prepared Ni for this embodiment 3 The XRD spectrum of B powder body, as can be seen, the powder body prepared in this embodiment is crystalline Ni 3 B, no other impurity phases. figure 2 Prepared Ni for this embodiment 3 The SEM photo of powder B shows that the powder has a network structure, and the diameter of the network wire is about 20nm.

Embodiment 2

[0023] Mix micron-sized metal nickel powder and amorphous boron powder (molar ratio is 4:1) with 5 times the mass of sodium chloride powder and put it into a corundum crucible, heat it to 1100°C under the protection of argon, and keep it warm for 1h After cooling naturally, the product was soaked in 2.0mol / L hydrochloric acid for 4 hours, filtered, washed with water and ethanol for several times, and dried to obtain Ni 3 B powder.

Embodiment 3

[0025] Mix micron-sized metal nickel powder and amorphous boron powder (molar ratio 4.5:1) with 5 times the mass of sodium chloride powder, put them into a corundum crucible, heat to 1100°C under the protection of argon, and keep it warm for 1h After cooling naturally, the product was soaked in 3.0mol / L hydrochloric acid for 5 hours, filtered, washed with water and ethanol several times, and dried to obtain Ni 3 B powder.

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Abstract

The invention discloses nickel boride powder with a network structure and a preparation method of the nickel boride powder, and belongs to the technical field of inorganic powder preparation. The nickel boride powder is crystalline Ni3B and has the network structure, and the average diameter of network lines is 20 nm. The preparation method comprises the preparation steps as follows: micron-scale metal nickel powder, amorphous boron powder and alkali chloride powder are mixed; the mixed powder is placed in a corundum crucible, heated to 1000 DEG C or higher under argon protection and cooled naturally after thermal insulation for 0.5-2 hours; an obtained product is soaked in hydrochloric acid, filtered, washed with water and ethanol for several times and dried, and the Ni3B powder with the network structure is obtained. The obtained Ni3B powder is crystalline, has the network porous structure, can be used as a catalyst carrier material and is also a potential inorganic function material.

Description

technical field [0001] The invention belongs to the technical field of inorganic powder preparation, in particular to a nickel boride (Ni boride) 3 B) the preparation method of powder, particularly relate to a kind of Ni with network structure 3 The preparation method of B powder. Background technique [0002] Due to its high mechanical hardness, strong corrosion resistance and good electromagnetic and catalytic properties, Ni-B has a wide range of applications in superhard anti-corrosion coatings, electronic functional materials and catalysis. At present, there are two main methods for preparing Ni-B powder: wet chemical method and elemental direct reaction method. The wet chemical method generally uses borohydride to reduce the nickel-containing precursor, and the resulting Ni-B powder is amorphous and nano-sized, which is a widely used non-noble metal hydrogen electrode catalyst. The Ni-B powder prepared by the elemental direct reaction method is crystalline, and can b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/04
CPCC01B35/04C01P2002/72C01P2004/03
Inventor 冉松林魏雅男
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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