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N-butanol amination catalyst prepared by mechanochemical method and use method of the catalyst

A n-butanol amination catalyst, a technology of mechanochemical method, applied in physical/chemical process catalysts, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of many by-products, poor targeting, etc. produce less effect

Inactive Publication Date: 2019-06-07
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the same amination catalyst is used in the production of low-carbon fatty amines (for example, a fatty alcohol tertiary amination catalyst and its preparation method and application, application number 201810984067.1), but the same amination catalyst is used for different fatty alcohol amination catalysis Catalysts will have problems of poor pertinence and relatively excessive by-products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of the n-butanol amination catalyst prepared by mechanochemical method is as follows:

[0018] Under a nitrogen protective atmosphere, add a mixture of diatomite, aluminum oxide, nickel sesquioxide, tricobalt tetroxide and heavy rare earth to the ball mill jar, the mixture of diatomite, alumina, nickel trioxide, tricobalt tetroxide and heavy rare earth The mass ratio is 10:50:10:10:1; add grinding balls into the ball milling jar, the diameter of the grinding balls is 10 mm, seal the ball milling jar, and perform ball milling at room temperature and the linear velocity of the grinding balls at 15 m / s Grinding and mixing, ball milling time is 30 min to obtain ground powder; transfer the ground powder to a beaker, add 3 times the mass of the ground powder to the beaker and add nitric acid with a mass concentration of 10%, stir and heat up to 50°C, Under the condition of stirring, use a dropping funnel to drop a sodium carbonate solution with a mass c...

Embodiment 2

[0022]Under a nitrogen protective atmosphere, add a mixture of diatomite, aluminum oxide, nickel sesquioxide, tricobalt tetroxide and heavy rare earth to the ball mill jar, the mixture of diatomite, alumina, nickel trioxide, tricobalt tetroxide and heavy rare earth The mass ratio is 15:40:5:15:1; add grinding balls into the ball milling jar, the diameter of the grinding balls is 20 mm, seal the ball milling jar, and perform ball milling at room temperature and the linear velocity of the grinding balls at 30 m / s Grinding and mixing, the ball milling time is 60 min to obtain ground powder; transfer the ground powder to a beaker, add 3 times the mass of the ground powder to the beaker and add nitric acid with a mass concentration of 15%, stir and heat up to 55°C, Add the sodium carbonate solution with a mass concentration of 15% to the beaker dropwise under stirring conditions, add dropwise to pH 10 in 30 minutes, and continue to keep constant temperature and stir for 60 minutes t...

Embodiment 3

[0026] Under a nitrogen protective atmosphere, add a mixture of diatomite, aluminum oxide, nickel sesquioxide, tricobalt tetroxide and heavy rare earth to the ball mill jar, the mixture of diatomite, alumina, nickel trioxide, tricobalt tetroxide and heavy rare earth The mass ratio is 20:30:8:15:1; add grinding balls into the ball milling tank, the diameter of the grinding balls is 15 mm, seal the ball milling tank, and perform ball milling at room temperature and the linear velocity of the grinding balls at 20 m / s Grinding and mixing, ball milling time is 50 min to obtain ground powder; transfer the ground powder to a beaker, add 3 times the mass of the ground powder to the beaker and add nitric acid with a mass concentration of 15%, stir and heat up to 50°C, Add the sodium carbonate solution with a mass concentration of 15% to the beaker dropwise under stirring conditions, add dropwise to the pH of 10 in 25 minutes, and continue to keep constant temperature and stir for 60 min...

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Abstract

The invention relates to an n-butyl alcohol amination catalyst prepared by a mechanochemical method. The catalyst is prepared, according to the mechanochemical method, by carrying out ball milling, nitric acid dissolution, sodium carbonate solution neutralization, impregnation, filtration, drying, roasting and granulation on a mixture consisting of diatomite, aluminum oxide, nickel trioxide, cobaltosic oxide and heavy rare earth. The catalyst is used for producing n-butylamine through amination catalysis of ammonia gas and n-butyl alcohol under the condition of hydrogen, which indicates that the catalyst can effectively inhibit the generation of impurities such as n-butyl ether, N-isobutyl-N,N-di-n-butylamine and N-n-butyl butyramide.

Description

technical field [0001] The invention belongs to the production technology of low-carbon aliphatic amines, and in particular relates to a n-butanol amination catalyst prepared by a mechanochemical method and a method for using the catalyst. Background technique [0002] Ammonia molecule (NH 3 ) is replaced by an alkyl group (R) to generate an organic amine. According to the number of substituted hydrogen atoms in the ammonia molecule, they are called primary amines (RNH 2 ), secondary amines (R 2 NH), tertiary amines (R 3 N). Alkyl organic amines with substituent (R) of 6 or less carbons are called lower carbons amines (Lower Carbons Amines, also known as lower fatty amines). Low-carbon aliphatic amines, including monoethylamine, diethylamine, triethylamine, mono-n-propylamine, di-n-propylamine, tri-n-propylamine, mono-isopropylamine, di-isopropylamine, mono-n-butylamine, di-n-butylamine, tri-n-propylamine Butylamine, isobutylamine, diisobutylamine, etc. Among them, n-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C07C211/07C07C209/16
Inventor 沈剑杨泽慧周国权
Owner NINGBO UNIVERSITY OF TECHNOLOGY