Ruthenium-copper bimetallic catalyst, preparation method and application thereof

A bimetallic catalyst and aniline technology are applied in the synthesis field of ruthenium-copper bimetallic catalysts, can solve the problems of multiple solid wastes, high reaction cost, complicated steps, etc., and achieve the effects of wide application prospect, high catalyst activity, and reaction condition temperature.

Active Publication Date: 2020-04-07
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional synthesis method of selenium compounds has cumbersome steps and produces a lot of solid waste. Therefore, the development of high-efficiency catalysts to realize clean selenium compounds, especially the synthesis method of selenium heterocycles, has good practical significance
[0003] A

Method used

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  • Ruthenium-copper bimetallic catalyst, preparation method and application thereof
  • Ruthenium-copper bimetallic catalyst, preparation method and application thereof
  • Ruthenium-copper bimetallic catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Catalyst preparation:

[0028] Configure 100mL of mixed aqueous solution of ruthenium chloride and copper chloride, wherein the concentration of ruthenium is 0.4mol / L, and the concentration of copper is 0.6mol / L; 1:9), hydrochloric acid mixed aqueous solution 100mL, in which the concentration of substituted aniline is equal to the concentration of hydrochloric acid, both are 1.5mol / L. Mix an equal volume (100 mL) of ruthenium-copper mixed aqueous solution with hydrochloric acid solution of substituted aniline, adjust the pH value to neutral with milk of lime (ie, calcium hydroxide), and then blow in air at a rate of 0.8 mL / s for 24 hours to obtain The ruthenium-copper bimetallic catalyst was obtained after drying the precipitate at 90°C. The weight ratio of the obtained catalyst weight to the substituted aniline used is 0.98 (various impurities are mixed in the reaction, it is difficult to calculate the exact yield, so the polymer / monomer weight ratio is used to descri...

Embodiment 2

[0032] Other conditions are the same as in Example 1, and the properties of materials synthesized by using different concentrations of ruthenium chloride are tested, and the experimental results are shown in Table 1.

[0033] The performance test of the material synthesized by different ruthenium concentrations in table 1

[0034]

[0035] From the above results, it can be seen that the catalytic effect of the material synthesized using 0.4mol / L ruthenium chloride (Example 1) is the best (No. 4), and the concentration of ruthenium chloride has little influence on the output of the catalytic material.

Embodiment 3

[0037] Other conditions are the same as in Example 1, and the effect of different copper chloride concentrations is checked, and the experimental results are as shown in Table 2.

[0038] The performance test of the material synthesized by different copper concentrations in table 2

[0039]

[0040]

[0041] As can be seen from the above results, the catalytic effect of the material synthesized using 0.6mol / L cupric chloride (Example 1) is the best (No. 5), and the concentration of copper increases, although the output of the catalyst material will increase, but the activity drops sharply.

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Abstract

The invention discloses a ruthenium-copper bimetallic catalyst, a preparation method and application thereof. The preparation method includes the steps of: mixing a ruthenium-copper mixed aqueous solution of equal volume with a hydrochloric acid solution of substituted aniline, adjusting the pH value of the solution to neutral, then blowing air for 12-36h at a speed of 0.5-1mL/s, and drying the obtained precipitate to obtain the ruthenium-copper bimetallic catalyst. Benefited from the synergistic catalysis effect of ruthenium and copper, the catalyst has extremely high activity, available o-methyl diphenyl diselenide can be catalyzed for air oxidation, thus synthesizing a useful selenium-oxygen heterocyclic compound. The technology has a clean and simple preparation process, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a synthesis method of a ruthenium-copper bimetallic catalyst, which belongs to the field of preparation of catalytic materials. Background technique [0002] Due to the unique properties of selenium, selenium-containing compounds have good chemical reactivity and biological activity. Among them, selenium-containing heterocycles are widely used in drug synthesis and biochemistry because of their good antibacterial and anticancer activities. However, the traditional synthesis method of selenium compounds has cumbersome steps and produces a lot of solid waste. Therefore, the development of high-efficiency catalysts to realize clean selenium compounds, especially the synthesis method of selenium heterocycles, has good practical significance. [0003] As a selenium-containing heterocyclic compound, the selenium-oxygen heterocycle needs to be synthesized by a multi-step synthesis method, and the use of chemical reagents will generat...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J23/89C07D329/00
CPCB01J31/06B01J23/8926C07D329/00B01J2231/70Y02P20/584
Inventor 俞磊李培梓周文见
Owner YANGZHOU UNIV
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