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Method of preparing highly effective hydrogenation amorphous alloy catalyst

A technology of amorphous alloy and hydrogenation catalyst, which is applied in the field of preparation of high-efficiency hydrogenation amorphous alloy catalyst, can solve the problems affecting the structure, particle size distribution and shape of the catalyst, and affect the catalytic performance, and the degree of crystallization can be achieved. control, simple operation, and high catalytic activity

Inactive Publication Date: 2012-08-29
NANKAI UNIV
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Problems solved by technology

[0004] It can be seen that the preparation method directly affects the structure, particle size distribution and morphology of the catalyst, thereby affecting its catalytic performance.

Method used

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  • Method of preparing highly effective hydrogenation amorphous alloy catalyst

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Embodiment 1

[0018] These examples illustrate the preparation of different amorphous alloy catalysts.

[0019] Prepare a certain concentration of nickel salt solution, the concentration is 0.001 ~ 2mol / L, and prepare a certain concentration of KBH 4 solution, the concentration is 0.1~2mol / L. Under a certain protective gas, the KBH 4 The solution was added dropwise to the nickel salt solution at a certain speed (1-12mL / min), and the obtained black precipitate was washed with distilled water and absolute ethanol to neutrality, and vacuum-dried at a certain temperature to obtain NiB catalyst A1. Prepare a certain concentration of NiB plating solution, in which the concentration of nickel salt is 0.01~0.1mol / L, KBH 4 The concentration is 0.02~0.2mol / L, and appropriate amount of NaOH and ethylenediamine are added to form a stable plating solution. Immerse the NiB in step 1 in a certain concentration of AgNO 3 solution, after stirring for 0.5-8 hours, add it to the NiB plating solution at 45...

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Abstract

The invention relates to a novel method for preparing a high-efficiency amorphous alloy catalyst. Amorphous NiB alloy that is prepared through a chemical reduction method is adopted as a precursor, and a control electroless plating method is adopted to prepare a compound NiB / NiB catalyst. A partial crystallization treatment is then carried out for the compound NiB / NiB catalyst, thus realizing theaim at increasing catalytic hydrogenation property.

Description

technical field [0001] The invention relates to a new method for preparing high-efficiency amorphous alloy catalyst. Using the amorphous NiB alloy prepared by chemical reduction as the precursor, the composite NiB / NiB catalyst was prepared by controlled electroless plating, and partly crystallized to achieve the purpose of increasing its catalytic hydrogenation performance. Background technique [0002] Amorphous alloy is a new type of material with short-range order and long-range disorder structure. It is formed by chaotic accumulation of atomic clusters with ordered structure, and is thermodynamically metastable. Due to the unique structure of the amorphous alloy, it also exhibits excellent performance in the field of catalysis. The study of catalyst metal dispersion shows that the metal particle size ranges from 1nm to 15nm is the most effective range of metal catalysis. The particle size of the highly dispersed carrier metal catalyst and metal atomic cluster is about ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J21/02C07B31/00C07C209/32
Inventor 李伟闫洪张明慧陶克毅
Owner NANKAI UNIV