Method for directly producing 1,2,6-hexanetriol by performing hydrogenation on 5-hydroxymethylfurfural

A technology of hydroxymethylfurfural and hexanetriol, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of long cycle, low yield, many reaction steps, etc., and achieve low cost, The effect of high yield and mild catalytic reaction conditions

Active Publication Date: 2019-04-26
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems of low yield of 1,2,6-hexanetriol, many reaction steps and long cycle in the existing process of hydrogenatin

Method used

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  • Method for directly producing 1,2,6-hexanetriol by performing hydrogenation on 5-hydroxymethylfurfural

Examples

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Embodiment 1

[0030] Example 1: A method for directly producing 1,2,6-hexanetriol by hydrogenation of 5-hydroxymethylfurfural

[0031] Its production method is: add 11.9g of cobalt chloride hexahydrate and 150mL of water into a 500mL round bottom flask, stir to dissolve and place it in an ice-water bath, and add 6.75g of KBH 4 Dissolve it in 150mL of water and place it in a dropping funnel. Under the protection of a nitrogen atmosphere, slowly add it dropwise to the above round bottom flask, the reaction proceeds rapidly, a large amount of gas is released, and Co-B precipitates are formed. When no gas is generated, filter the solid product, wash the solid product with deionized water and absolute ethanol for 3-5 times, and finally store the sample in absolute ethanol for later use. Put 0.2g of Co-B amorphous alloy catalyst, 0.5g of 5-hydroxymethylfurfural, and 10.0mL of ethanol into a 50mL stainless steel reactor with polytetrafluoroethylene, at a temperature of 140°C and a pressure of 1.5M...

Embodiment 2

[0032] Example 2: A method for directly producing 1,2,6-hexanetriol by hydrogenation of 5-hydroxymethylfurfural

[0033] Its production method is: add 5.95g of cobalt chloride hexahydrate, 5.95g of nickel chloride hexahydrate and 150mL of water into a 500mL round-bottomed flask, stir to dissolve and put it in an ice-water bath, and add 6.75g of KBH 4 Dissolve it in 150mL of water and place it in a dropping funnel. Under the protection of nitrogen atmosphere, slowly add it dropwise into the above round bottom flask, the reaction proceeds rapidly, a large amount of gas is released, and Co-Ni-B precipitates are formed. When no gas is generated, filter the solid product, wash the solid product with deionized water and absolute ethanol for 3-5 times, and finally store the sample in absolute ethanol for later use. Put 0.2g of Co-Ni-B amorphous alloy catalyst, 0.5g of 5-hydroxymethylfurfural, and 10.0mL of ethanol into a 50mL stainless steel reactor with polytetrafluoroethylene, at a...

Embodiment 3

[0034] Example 3: A method for directly producing 1,2,6-hexanetriol by hydrogenation of 5-hydroxymethylfurfural

[0035] Its production method is as follows: add 11.9g of cobalt chloride hexahydrate and 150mL of water into a 500mL round bottom flask, stir to dissolve and put it in an ice-water bath, and add 4.73g of NaBH 4 and 2.75g NaH 2 PO 2 Dissolve it in 150mL of water and place it in a dropping funnel. Under the protection of a nitrogen atmosphere, slowly add it dropwise to the above round bottom flask. The reaction proceeds rapidly, a large amount of gas is released, and Co-P-B precipitates are formed. When no gas is generated, filter the solid product, wash the solid product with deionized water and absolute ethanol for 3-5 times, and finally store the sample in isopropanol for later use. Put 0.2g of Co-P-B amorphous alloy catalyst, 0.5g of 5-hydroxymethylfurfural, and 10.0mL of isopropanol into a 50mL stainless steel reactor with polytetrafluoroethylene, at a tempera...

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Abstract

The invention relates to a method for directly producing 1,2,6-hexanetriol by performing hydrogenation on 5-hydroxymethylfurfural. The method comprises the following steps: adopting 5-hydroxymethylfurfural as a raw material under the existence of the solvent, taking amorphous alloy as catalyst, performing hydrogenation under a certain reaction temperature and hydrogen pressure condition, generating 1,2,6-hexanetriol through one-step method. The method disclosed by the invention has the advantages of being high in hexanetriol yield, mild in reaction condition, low in catalyst preparation cost and simple in separation after reaction, and has good industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation, in particular to a method for directly producing 1,2,6-hexanetriol through hydrogenation of 5-hydroxymethylfurfural. Background technique [0002] 1,2,6-Hexanetriol has very important industrial applications. It is an important intermediate in the synthesis of polyurethane resins, alkyd resins, plasticizers, and lubricants. It can also be used as an extraction solvent with excellent performance. Solvents for sugars such as xylose, arabinose, and glucose are widely used in the extraction of various products, and can also be used as low-toxic swelling agents. At present, the industry mainly produces 1,2,6-hexanetriol based on fossil resources, which is mainly produced by hydrolysis and hydrogenation of acrolein dimer. This process route has the disadvantages of high cost of reaction raw materials, non-renewable, many process steps and high emission. [0003] Biomass resource is a renewable ...

Claims

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Application Information

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IPC IPC(8): C07C29/00C07C29/141C07C31/22B01J23/75B01J23/755B01J27/185
CPCB01J23/75B01J23/755B01J27/1853C07C29/00C07C29/141C07C31/22
Inventor 夏启能贾红燕王燕刚葛志刚李溪沈张锋
Owner JIAXING UNIV
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