Catalyst for preparing 1,6-hexanediol through direct reduction of adipic acid

A catalyst, adipic acid technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve the problem of low reaction yield

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the problem of low reaction yield in the production of 1,6-hexanediol by the direct reduction of adipic acid in the prior art, and a new direct reduction of adipic acid for the production of 1,6-hexanediol is provided. A catalyst for 6-hexanediol, the catalyst will have a high yield conversion of 1,6-hexanediol

Method used

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  • Catalyst for preparing 1,6-hexanediol through direct reduction of adipic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Catalyst preparation:

[0021] RuCl 3 , NH 4 ReO 4 , InCl 3 and H 2 IrCl 6 Dissolved in 50mL of water, the masses of Ru, Re, In, and Ir metals in the solution are 1g, 1g, 0.1g, and 0.1g, respectively. Add 50mL of 60-mesh coconut shell charcoal that has been treated at 70°C for 5h with a concentration of 35wt% nitric acid aqueous solution, washed to neutral and dried, impregnated for 12h, and dried at 120°C for 3h to obtain a catalyst precursor, and the catalyst The precursor was placed at 500°C for 3 hours with hydrogen diluted 5 times with nitrogen to obtain a catalyst. According to ICP-AES analysis, the Ru loading in the catalyst was 0.02g / mL, and the weight ratio of each component of the catalyst was Ru:Re: In:Ir=1:1:0.1:0.1.

[0022] Catalyst evaluation:

[0023] Add 100g of adipic acid solids, 200mL of water, and 2mL of the above-mentioned catalyst into the autoclave, start stirring, first pass through nitrogen for three times, then pass through hydroge...

Embodiment 2

[0025] Catalyst preparation:

[0026] RuCl 3 , NH 4 ReO 4 and InCl 3 Dissolved in 50mL of water, the masses of Ru, Re, and In metals in the solution are 1g, 1g, and 0.1g, respectively. Add 50mL of 60-mesh coconut shell charcoal that has been treated at 70°C for 5h with a concentration of 35wt% nitric acid aqueous solution, washed to neutral and dried, impregnated for 12h, and dried at 120°C for 3h to obtain a catalyst precursor, and the catalyst The precursor was placed at 500°C for 3 hours with hydrogen diluted 5 times with nitrogen to obtain a catalyst. According to ICP-AES analysis, the Ru loading in the catalyst was 0.02g / mL, and the weight ratio of each component of the catalyst was Ru:Re: In=1:1:0.1.

[0027] Catalyst evaluation:

[0028] Add 100g of adipic acid solids, 200mL of water, and 2mL of the above-mentioned catalyst into the autoclave, start stirring, first pass through nitrogen for three times, then pass through hydrogen for three times, and then pass...

Embodiment 3

[0030] Catalyst preparation:

[0031] RuCl 3 , NH 4 ReO 4 and H 2 IrCl 6Dissolved in 50mL of water, the masses of Ru, Re, and Ir metals in the solution are 1g, 1g, and 0.1g, respectively. Add 50mL of 60-mesh coconut shell charcoal that has been treated at 70°C for 5h with a concentration of 35wt% nitric acid aqueous solution, washed to neutral and dried, impregnated for 12h, and dried at 120°C for 3h to obtain a catalyst precursor, and the catalyst The precursor was placed at 500°C for 3 hours with hydrogen diluted 5 times with nitrogen to obtain a catalyst. According to ICP-AES analysis, the Ru loading in the catalyst was 0.02g / mL, and the weight ratio of each component of the catalyst was Ru:Re: Ir=1:1:0.1.

[0032] Catalyst evaluation:

[0033] Add 100g of adipic acid solids, 200mL of water, and 2mL of the above-mentioned catalyst into the autoclave, start stirring, first pass through nitrogen for three times, then pass through hydrogen for three times, and then ...

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Abstract

The invention relates to a catalyst for preparing 1,6-hexanediol through direct reduction of adipic acid. According to the catalyst, the problem of low reaction yield in the process of preparing 1,6-hexanediol through the direct reduction of the adipic acid in the prior art is mainly solved. The catalyst comprises active components and a carrier, wherein the active components comprise at least one of Ru, Re, In and Ir; the carrier is activated carbon. According to the technical scheme, the problem is well solved. The catalyst can be applied to the industrial production for preparing 1,6-hexanediol through the direct reduction of adipic acid.

Description

technical field [0001] The invention relates to a catalyst for preparing 1,6-hexanediol through direct reduction of adipic acid, preparation of the catalyst and a synthesis method of 1,6-hexanediol. Background technique [0002] 1,6-Hexanediol (HDO) is a newly emerging important fine chemical raw material. Its products have excellent high-end special application properties such as environmental protection, thermal processing, and weather resistance. It is an environmentally friendly chemical raw material that does not pollute the environment. Known as "the new cornerstone of organic synthesis". It is widely used in high-end environmental protection coatings, biodegradable polyester, high-grade synthetic fibers, and high-end mechanical products such as automotive components. In addition, 1,6-hexanediol can be used to synthesize hexamethylammonium bromide, an antihypertensive drug, and an indole antihormone drug for the treatment of prostatitis. It can also be used to synthes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63C07C31/20C07C29/149
Inventor 干丰丰唐泓畅延青
Owner CHINA PETROLEUM & CHEM CORP
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