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Nano nickel boride (NiB) amorphous alloy and preparation method thereof

An amorphous alloy and nano-boron technology, applied in the field of nickel boride alloys, can solve the problems of small specific surface area and complicated steps, and achieve the effects of large specific surface area, good repeatability and small particle size.

Inactive Publication Date: 2012-07-11
CHINA NAT ACAD NANOTECH & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the amorphous alloy catalyst prepared by the above method is that its specific surface area is small (less than 1m 2 / g), the surface is covered by an oxide layer, and the steps are cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A nano-nickel boride (NiB) amorphous alloy is characterized in that the active component of the alloy is made up of nickel (Ni) and boron (B), wherein the mass percentage of nickel (Ni) is 80%, boron (B ) is 20% by mass.

[0018] A kind of preparation method of nano-nickel boride (NiB) amorphous alloy is characterized in that it adopts the method for liquid phase reduction, and concrete steps are as follows:

[0019] (1) Configuration solution: Weigh nickel sulfate hexahydrate (NiSO 4 ·6H 2 O) 1g is added into 50ml deionized water to be mixed with nickel sulfate (NiSO 4 ) solution, adding 5ml concentration in the solution is 25% ammoniacal liquor, makes its solution fully dissolve, then adds 0.7g dodecylamine, stirs 1 hour to form the complex compound of nickel (Ni);

[0020] (2) to generate precipitate: 0.4g sodium borohydride (NaBH 4 ) was added to 10ml deionized water; sodium borohydride (NaBH 4 ) solution is added dropwise in the solution that step (1) obtains,...

Embodiment 2

[0025] A nano-nickel boride (NiB) amorphous alloy is characterized in that the active component of the alloy is made up of nickel (Ni) and boron (B), wherein the mass percentage of nickel (Ni) is 80%, boron (B ) is 20% by mass.

[0026] A kind of preparation method of nano-nickel boride (NiB) amorphous alloy is characterized in that it adopts the method for liquid phase reduction, and concrete steps are as follows:

[0027] (1) Configuration solution: Weigh nickel chloride (NiCl 2 ) 1g was added to 50ml deionized water to prepare nickel chloride (NiCl 2 ) solution, adding 10ml concentration in the solution is 25% ammoniacal liquor, makes its solution fully dissolve, then adds 0.8g dodecylamine, stirs 1 hour to form the complex compound of nickel (Ni);

[0028] (2) to generate a precipitate: 0.6g potassium borohydride (KBH 4 ) was added to 10ml deionized water; Potassium borohydride (KBH 4 ) solution is added dropwise in the solution that step (1) obtains, and reaction proc...

Embodiment 3

[0033] A nano-nickel boride (NiB) amorphous alloy is characterized in that the active component of the alloy is made up of nickel (Ni) and boron (B), wherein the mass percentage of nickel (Ni) is 80%, boron (B ) is 20% by mass.

[0034] A kind of preparation method of nano-nickel boride (NiB) amorphous alloy is characterized in that it adopts the method for liquid phase reduction, and concrete steps are as follows:

[0035] (1) Configuration solution: Weigh nickel nitrate hexahydrate [Ni(NO 3 ) 2 ·6H 2 O] 1g is added into 50ml deionized water to be mixed with nickel nitrate [Ni(NO 3 ) 2 ] solution, adding 10ml concentration in solution is the ammoniacal liquor of 25%, makes its solution fully dissolve, then adds 0.6g dodecylamine, stirs 1 hour to form the complex F thing of nickel (Ni);

[0036] (2) to generate precipitate: 0.4g sodium borohydride (NaBH 4 ) was added to 10ml deionized water; sodium borohydride (NaBH 4 ) solution is added dropwise in the solution that st...

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Abstract

The invention discloses a nano nickel boride (NiB) amorphous alloy and a preparation method thereof. According to the preparation method, the nano NiB amorphous alloy with small particle size and large specific surface area is prepared by adopting a liquid phase reduction method, wherein the mass percent of Ni is 10-80 percent, and the mass percent of B is 20-90 percent. The preparation method comprises the steps of: 1, preparing a solution; 2, generating a sediment; and 3, washing the sediment and storing. The invention has the advantages that the NiB amorphous alloy has small particle size of particles and large specific surface area; and the preparation method is simple, is beneficial to massive production, and is suitable for a catalytic hydrogenation reaction.

Description

(1) Technical field [0001] The invention relates to a nickel boride (NiB) alloy, in particular to a nanometer nickel boride (NiB) amorphous alloy and a preparation method thereof. (2) Background technology [0002] Amorphous alloys are a class of materials with long-range disordered atomic arrangement and short-range ordered structure. Amorphous alloys have the characteristics of isotropy, uniform distribution of active sites, and high coordination unsaturation of active atoms. Therefore, amorphous alloys exhibit unique high activity and high selectivity in various catalytic reactions, and have been used in some It is used as a catalyst instead of framework nickel in industrial hydrogenation reactions. [0003] The quenching method is currently the main method for preparing amorphous alloys in industry. Its main steps are: put the molten joint pressure on a high-speed rotating copper roller to make it quench, and the cooling speed reaches 106K / s, so that the Became a ribbo...

Claims

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Application Information

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IPC IPC(8): C22C45/04C22C45/00B22F9/24
Inventor 张东
Owner CHINA NAT ACAD NANOTECH & ENG
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