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Reduced polyamide material and supported nano metal catalyst and preparation method and application thereof

A nano-metal and nano-metal particle technology, applied in the field of nano-metal catalysts, can solve problems such as long reduction time, and achieve the effect of not easy to agglomerate, mild reaction, and small size

Active Publication Date: 2022-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these methods require an externally strengthened reducing agent to obtain gold nanoparticles, and the method of preparing gold nanoparticles by using the polymer's own reduction requires a long reduction time.

Method used

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  • Reduced polyamide material and supported nano metal catalyst and preparation method and application thereof
  • Reduced polyamide material and supported nano metal catalyst and preparation method and application thereof
  • Reduced polyamide material and supported nano metal catalyst and preparation method and application thereof

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[0032] The reduced polyamide material of the present invention can be prepared by conventional methods for preparing polymers in the art. The following preparation methods are preferably adopted, specifically including:

[0033] 1) Dissolving the polyacyl chloride and polyaromatic amine in an organic solvent respectively to form solution A and solution B;

[0034] 2) Under stirring conditions, solution A and solution B are mixed and reacted to obtain a suspension;

[0035] 3) Filtering, washing and drying the suspension to obtain the reducing polyamide material.

[0036] According to the present invention, the organic solvents for dissolving the polybasic acid chlorides and polybasic aromatic amines can be the same or different, each being at least one selected from chloroform, n-hexane, cyclohexane and petroleum ether.

[0037] In the present invention, the concentration of solution A and solution B can be routinely selected according to the prior art, as long as the polyac...

Embodiment 1

[0061] Weigh 108mg of m-phenylenediamine and dissolve it in chloroform, and another weigh 265mg of trimesoyl chloride and dissolve it in chloroform, add the former solution and stir, and a large amount of white insoluble matter is rapidly formed. After stirring for 10 minutes, the reaction was stopped, and a white suspension was obtained. After filtration, a white solid was obtained. After washing and centrifuging several times with ethanol and water, the white reducing polyamide material powder PA-1 was obtained by vacuum drying. Its appearance was as follows: figure 1 shown.

Embodiment 2

[0063] Weigh 324mg of m-phenylenediamine and dissolve it in n-hexane, and another weigh 265mg of trimesoyl chloride and dissolve it in chloroform, add the former solution and stir, and a large amount of white insoluble matter is rapidly formed. After stirring for 5 minutes, the reaction was stopped, and a white suspension was obtained. After filtration, a white solid was obtained. After washing and centrifuging several times with ethanol and water, the mixture was vacuum-dried to obtain a white reducing polyamide material powder PA-2.

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Abstract

The invention relates to the field of nanometer metal catalysts, and specifically provides a reducing polyamide material, a supported nanometer metal catalyst, a preparation method and application thereof. The reductive polyamide material is obtained by polymerization of polyacyl chloride and aromatic amine; the molar ratio of the polyacyl chloride to the aromatic amine is 1:4˜4:1. The supported nano-metal catalyst is a polyamide carrier loaded with nano-metal particles, which includes the reaction product of the reducing polyamide material and a water-soluble metal compound precursor. The reducing polyamide material of the present invention can be used in the preparation of various nano-metal catalysts, and has a wide range of applications. The particle size of the nano-metal particles of the prepared supported nano-metal catalyst is relatively small, and no additional reducing agent is required during the preparation process. , and the recovery load time is short.

Description

technical field [0001] The present invention relates to the field of nano-metal catalysts, more specifically, to a reducing polyamide material, a supported nano-metal catalyst, a method for preparing the supported nano-metal catalyst, and the supported nano-metal catalyst for The application of the catalytic hydrogenation of nitrophenol to prepare p-aminophenol. Background technique [0002] Since Haruta et al. found that highly dispersed gold catalysts have high catalytic activity for low-temperature complete oxidation of CO, gold catalysts have attracted the attention of many researchers. According to the current research, an important prerequisite for the high activity of supported gold catalysts is to prepare nano-sized, highly dispersed gold particles. Individual nanoparticles are easy to agglomerate due to their high surface energy, so it is necessary to load these small particles on a suitable carrier with a high specific surface area to maintain high dispersion of n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/32B01J31/06C07C213/02C07C215/76
CPCC07C213/02C08G69/32B01J31/06B01J2231/64B01J35/394B01J35/393C07C215/76
Inventor 郑俊鹏严昊李森郭鸣明刘轶群
Owner CHINA PETROLEUM & CHEM CORP
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