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Amorphous-state alloy catalyst and preparation method thereof

An amorphous alloy and catalyst technology, which is applied in the field of amorphous alloy catalyst and its preparation, can solve the problems of low hydrogen adsorption capacity, low hydrogenation selectivity, low final yield and the like, so as to avoid high cost, The effect of improving catalytic activity and reducing cost

Inactive Publication Date: 2019-03-22
HUAIHUA UNIV
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Problems solved by technology

[0003] Traditional hydrogenation catalysts are generally selected from noble metals such as Pd, Pt, Rh, Ir, Os, and Ru, and prepared as supported catalysts. However, the ability of these supported catalysts to absorb hydrogen is not strong, the activity is not high and The selectivity of hydrogenation is not high, resulting in low final yield

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  • Amorphous-state alloy catalyst and preparation method thereof
  • Amorphous-state alloy catalyst and preparation method thereof
  • Amorphous-state alloy catalyst and preparation method thereof

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preparation example Construction

[0033] The invention provides an amorphous alloy catalyst and a preparation method thereof in one embodiment. Specifically, the preparation method of the amorphous alloy catalyst comprises the following steps:

[0034] Step S1: Dissolving the cobalt salt and the salt compound of M in water according to the ratio of the amount of cobalt and M being 100: (0 to 2) to obtain a mixed solution; wherein M is Fe, Cu, La, Ce, Ni, At least one of Zn and Mo.

[0035] Step S2: react the mixed solution with a reducing agent to obtain an amorphous alloy catalyst; wherein the reducing agent is KBH 4 And the aqueous solution of soluble hydroxide salt, the adding amount of reducing agent is according to the cobalt atom in the mixed solution and KBH 4 The ratio of the amount of the substance is 1:(3~4).

[0036] KBH 4 Under the conditions of the reaction between the solution and the metal salt with a certain reduction potential, a large amount of very fine H is rapidly released. 2 The bubb...

Embodiment 1

[0055] (1) Weigh a certain amount of CoCl 2 ·6H 2 O is dissolved in deionized water to make CoCl with a concentration of 1mol / L 2 Solution 1L.

[0056] (2) KBH 4 Dissolve in water with NaOH to form KBH containing 2mol / L 4 And 0.02mol / L NaOH reducing agent.

[0057] (3) CoCl prepared in step (1) under stirring 2 The reducing agent prepared in step (2) is slowly added dropwise into the solution, and black uniform particle precipitation is obtained in the reaction.

[0058] (4) After the reaction is completed, the precipitate is repeatedly washed with deionized water, and then washed with ethanol for 3 to 4 times to obtain a Co-B amorphous alloy catalyst, which is stored in absolute ethanol.

[0059] The Co-B amorphous alloy catalyst includes Co: 100 parts and B: 400 parts by substance amount.

Embodiment 2

[0061] (1) Weigh a certain amount of CoCl 2 ·6H 2 O and ZnCl 2 Dissolve in deionized water to make CoCl with a concentration of 1mol / L 2 solution and 0.01mol / L ZnCl 2 1L of the mixed solution.

[0062] (2) KBH 4 Dissolve in water with NaOH to form KBH containing 2mol / L 4 And 0.02mol / L NaOH reducing agent.

[0063] (3) CoCl prepared in step (1) under stirring 2 and ZnCl 2 Slowly add the reducing agent prepared in step (2) dropwise in the mixed solution, and react to obtain black uniform particle precipitation.

[0064] (4) After the reaction is completed, the precipitate is repeatedly washed with deionized water, and then washed with ethanol for 3 to 4 times to obtain a Co-B amorphous alloy catalyst, which is stored in absolute ethanol.

[0065] The Co-Zn-B amorphous alloy catalyst includes Co: 100 parts, Zn: 1 part and B: 400 parts according to the amount of substances; the material of the Zn element in the prepared Co-Zn-B amorphous alloy catalyst The percentage of ...

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Abstract

The invention relates to an amorphous-state alloy catalyst and a preparation method thereof. The amorphous-state alloy catalyst comprises the ingredients in parts by mass: 100 parts of Co, 0-6 parts of M and 300-400 parts of B, wherein M is at least one of Fe, Cu, La, Ce, Ni, Zn and Mo. According to the amorphous-state alloy catalyst, non-metals, i.e., boron and cobalt serve as main catalysts, theM serves as a cocatalyst, and the catalytic activity, hydrogenation selectivity and the yield of a target product are effectively improved through controlling a proportioning ratio of Co, the M and B. According to the amorphous-state alloy catalyst, precious metals are not required to be used, base metals are adopted, the problem of high cost caused by employment of the precious metals is avoided, the cost is reduced effectively, and a catalyst recovery procedure is not required to be performed, so that the amorphous-state alloy catalyst has a very good industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of industrial catalysis, in particular to an amorphous alloy catalyst and a preparation method thereof. Background technique [0002] The selective hydrogenation of α,β-unsaturated aldehydes to α,β-unsaturated alcohols is an important reaction in industry. Cinnamaldehyde, citral and other α,β-unsaturated aldehydes have a special aromatic smell, can be separated and purified from cinnamon oil and litsea cubeba oil, and can be widely used in the synthesis of fragrances, cosmetics, food and drugs. Cinnamyl alcohol is a typical α, β-unsaturated alcohol. It can be used as an important fine organic intermediate and spice. It is used in the deployment of clove, lily and other floral flavors and soap flavors. It is often shared with phenylacetaldehyde. Indispensable ingredients such as narcissus and rose essence. Nerol and geraniol synthesized by selective hydrogenation of citral have wide application value in ind...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/80B01J23/83B01J23/882
CPCB01J23/75B01J23/755B01J23/80B01J23/83B01J23/882
Inventor 李万伟
Owner HUAIHUA UNIV
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