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Catalyst used for production of isobutylamine and diisobutylamine, and using method thereof

A technology of diisobutylamine and catalyst is applied in molecular sieve catalysts, chemical instruments and methods, catalyst activation/preparation and other directions to achieve the effects of good selectivity, high catalyst activity and long service life

Active Publication Date: 2019-08-23
ZHEJIANG JIANYE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of Co is used in the catalyst, which is much more expensive than copper-nickel elements commonly used in industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of a catalyst for producing isobutylamine and diisobutylamine is as follows: 1) Mix sepiolite and zeolite molecular sieve to obtain a mixture, wherein the mass ratio of sepiolite and zeolite molecular sieve is 1:3, and grind the mixture into powder, 100~150 mesh powder is taken to obtain the carrier mixture; 2) Nickel nitrate, chromium nitrate, silver nitrate and iridium nitrate are prepared in proportion to the first mixed solution, wherein the mass ratio of each component is: nickel accounts for 1.0%, chromium accounts for 15.0%, silver accounted for 2.0%, iridium accounted for 0.03%; 3) Mix the first mixed solution with the above-mentioned carrier mixture evenly, the mass ratio of the first mixed solution to the carrier mixture is 2:1, then add ammonia water to precipitate for 3 hours, control The pH value is 9 to obtain a primary suspension; 4) Filter the obtained primary suspension to obtain a primary filter cake and a primary filtrate, and the ...

Embodiment 2

[0020]A preparation method of a catalyst for producing isobutylamine and diisobutylamine is as follows: 1) Mix sepiolite and zeolite molecular sieve to obtain a mixture, wherein the mass ratio of sepiolite and zeolite molecular sieve is 1:10, and grind the mixture into powder, 150~250 mesh powder is taken to obtain the carrier mixture; 2) Nickel nitrate, chromium nitrate, silver nitrate and iridium nitrate are prepared in proportion to form the first mixed solution, wherein the mass ratio of each component is: nickel accounts for 15.0%, chromium accounts for 10.0%, silver accounts for 0.5%, and iridium accounts for 0.01%; 3) Mix the first mixed solution with the above-mentioned carrier mixture evenly, the mass ratio of the first mixed solution and the carrier mixture is 5:1, then add ammonia water to precipitate for 3 hours, control The pH value is 10 to obtain a primary suspension; 4) Filter the obtained primary suspension to obtain a primary filter cake and a primary filtrate...

Embodiment 3

[0024] A preparation method of a catalyst for producing isobutylamine and diisobutylamine is as follows: 1) Mix sepiolite and zeolite molecular sieve to obtain a mixture, wherein the mass ratio of sepiolite and zeolite molecular sieve is 1:5, and grind the mixture into powder, Take 200~250 mesh powder to obtain the carrier mixture; 2) Prepare the first mixed solution with nickel nitrate, chromium nitrate, silver nitrate and iridium nitrate in proportion, wherein the mass ratio of each component is: nickel accounts for 10.0%, chromium accounts for 5.0%, silver accounts for 0.5%, iridium accounts for 0.10%; 3) mix the first mixed solution with the above-mentioned carrier mixture evenly, the mass ratio of the first mixed solution and the carrier mixture is 3:1, then add ammonia water to precipitate for 3 hours, control The pH value is 9.5 to obtain a primary suspension; 4) Filter the obtained primary suspension to obtain a primary filter cake and a primary filtrate, and the primar...

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PUM

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Abstract

The invention discloses a catalyst used for production of isobutylamine and diisobutylamine. According to the catalyst, a mixture of meerschaum and zeolite molecular sieve are taken as carriers, and the carrier is subjected to secondary deposition and secondary roasting for loading with nickel, chromium, silver, and iridium elements as active sites. The catalyst is long in service life, and low incost. The catalyst is used for isobutanol amination synthesis of isobutylamine and diisobutylamine, and characteristics such as high activity and selectivity in an invention condition range are achieved.

Description

technical field [0001] The invention belongs to the production technology of low-carbon aliphatic amines, and in particular relates to a catalyst for producing isobutylamine and diisobutylamine and a use method thereof. Background technique [0002] 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. are mainly produced by catalytic amination of ammonia and alcohol under hydrogen conditions. Among them, isobutylamine (English name isobutylamine), also known as 2-methyl-1-propanamine (2-methyl-1-propanamin), has a molecular formula of C 4 h 11 N, mainly used as an intermediate in the synthesis of medicines, pesticides, mineral flotation agents, gasoline anti-vibration agents, corrosion inhibitors and rubber processing chemicals, and can also be u...

Claims

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Application Information

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IPC IPC(8): B01J29/076B01J37/03B01J37/08C07C209/16C07C211/07
CPCB01J29/076B01J37/035B01J37/088C07C209/16B01J2229/18C07C211/07
Inventor 沈剑冯烈周国权郑丰平陆文斌强林萍
Owner ZHEJIANG JIANYE CHEM
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