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Catalyst for synthesizing aromatic amine from aromatic aldehyde and preparation method thereof

A catalyst and a technology for aromatic amines, which are used in the field of catalysts for synthesizing aromatic amines from aromatic aldehydes and the field of preparation thereof, can solve the problems of affecting catalytic reaction activity, easy growth of precious metal palladium, environmental hidden dangers, etc. The effect of low pressure and temperature and high selectivity of main product

Active Publication Date: 2022-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology uses nitric acid and hydrochloric acid to boil the activated carbon carrier, which has environmental hazards; and the precious metal palladium is easy to grow or agglomerate on the surface of the carrier, which affects its catalytic activity.

Method used

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  • Catalyst for synthesizing aromatic amine from aromatic aldehyde and preparation method thereof
  • Catalyst for synthesizing aromatic amine from aromatic aldehyde and preparation method thereof
  • Catalyst for synthesizing aromatic amine from aromatic aldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 1g of ruthenium trichloride, 0.6g of chloroiridic acid, and 21.25g of polyacrylamide (average molecular weight: 10,000) and dissolve them in 3,750g of ethylene glycol, stir and mix at 600rpm, then raise the temperature to 198°C, and continue stirring for 3 hours to obtain and the iridium ion jelly, rinsed repeatedly with deionized water, and set aside. Take 1g of the above-mentioned jelly and disperse it in 400g of anhydrous methanol, add 19g of Na-MCM-41 molecular sieve, stir at 600rpm for 2h, and then filter it with suction. Catalyst for the synthesis of aromatic amines.

Embodiment 2

[0028] The same as Example 1, the difference is that the metal salt main agent uses chloroplatinic acid hexahydrate to prepare a catalyst for the synthesis of aromatic amines.

Embodiment 3

[0030] Same as Example 1, the difference is that palladium dichloride is used as the metal salt main agent to prepare a catalyst for the synthesis of aromatic amines.

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Abstract

The invention relates to a catalyst for the synthesis of aromatic amines from aromatic aldehydes and a preparation method thereof. The metal salt main agent, the metal salt auxiliary agent and the non-ionic high molecular compound are dissolved in an alcohol solvent, and heated after mixing to obtain Washing the jelly substance containing metal salt ions; dispersing the washed jelly substance containing metal salt ions in an organic solvent, adding inorganic porous carrier materials, mixing evenly, suction filtering and drying to obtain a catalyst for synthesizing aromatic amines. The method of the invention is energy-saving and environment-friendly, has simple process, and the prepared catalyst has small particle size of precious metals and is not easy to agglomerate, low operating temperature and operating pressure, high main reaction activity, few by-products and good reusability.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a catalyst for synthesizing aromatic amines from aromatic aldehydes and a preparation method thereof. Background technique [0002] Aromatic amine compounds are extremely important organic raw materials, widely used in the production of dyes, medicines, agricultural chemicals, additives, surfactants, textile auxiliaries, chelating agents, polymers, flame retardants, etc. With the rapid development of industry and economy, the domestic demand for aromatic amine compounds is increasing, but the current domestic market is still unable to meet this demand in the production of certain aromatic amine compounds. Therefore, the development of new aromatic amine compound preparation technology in China has a good prospect. With the gradual strengthening of people's awareness of environmental protection, the catalytic hydrogenation reduction method has gradually r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J31/30B01J35/02B01J35/10C07C209/22C07C213/02C07C217/58C07C211/27C07B43/04B01J35/00
Inventor 赵亮方向晨王刚
Owner CHINA PETROLEUM & CHEM CORP
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