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Preparation method for 2,5-furandicarboxylic acid and furan polyester

A technology of furandicarboxylic acid and furan polyester, applied in the direction of organic chemistry, can solve the problems of non-renewable resources, unfavorable sustainable development, unfriendly environment, etc., and achieve the effect of renewable raw materials, low price and easy availability of raw materials

Inactive Publication Date: 2018-04-06
安徽格闰科技控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation of 2,5-furandicarboxylic acid usually uses petrochemical products as raw materials. Petrochemical products are not only non-renewable resources, but also unfriendly to the environment, which is not conducive to sustainable development

Method used

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  • Preparation method for 2,5-furandicarboxylic acid and furan polyester
  • Preparation method for 2,5-furandicarboxylic acid and furan polyester
  • Preparation method for 2,5-furandicarboxylic acid and furan polyester

Examples

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Effect test

Embodiment 1

[0048] A preparation method of 2,5-furandicarboxylic acid includes the following steps:

[0049] 1). Preparation of sugar by hydrolysis of straw: crush the straw and add dilute hydrochloric acid, the mass ratio of straw to dilute hydrochloric acid is 10:1, and dilute hydrochloric acid is an acid solution with a mass percentage of 10%. The hydrolysis reaction is carried out at elevated temperature and pressure to obtain sugar. In aqueous solution, the hydrolysis reaction temperature is 80-100°C, the hydrolysis reaction time is 15min-2.5h, and the hydrolysis reaction pressure is 0.1Mpa-5Mpa;

[0050] 2) Hydrolysis of sugars to prepare 5-hydroxymethyl furfural: add dilute sulfuric acid to the sugar-containing aqueous solution obtained in step 1), the mass ratio of the sugar-containing aqueous solution and dilute sulfuric acid is 10:1, and the hydrolysis reaction is carried out at elevated temperature and pressure. Obtain the 5-hydroxymethyl furfural aqueous solution, the hydrolysis re...

Embodiment 2

[0056] A preparation method of 2,5-furandicarboxylic acid includes the following steps:

[0057] 1). Preparation of sugar by hydrolysis of straw: crush straw and add dilute nitric acid, the mass ratio of straw and dilute nitric acid is 0.5:1, dilute nitric acid is an acid solution with a mass percentage of 10%, and the hydrolysis reaction is carried out at elevated temperature and pressure to obtain sugar. Aqueous solution, the temperature of the hydrolysis reaction is 150~200℃, the reaction time of the hydrolysis is 15min~2.5h, and the pressure of the hydrolysis reaction is 0.1Mpa~5Mpa;

[0058] 2) Hydrolysis of sugars to prepare 5-hydroxymethyl furfural: add dilute phosphoric acid to the sugar-containing aqueous solution obtained in step 1), and the mass ratio of the sugar-containing aqueous solution to the dilute phosphoric acid is 0.5:1. Obtain the 5-hydroxymethyl furfural aqueous solution, the hydrolysis reaction temperature is 100℃~250℃, the hydrolysis reaction time is 30min~...

Embodiment 3

[0064] A preparation method of 2,5-furandicarboxylic acid includes the following steps:

[0065] 1). Preparation of sugar by hydrolysis of straw: pulverize straw and add dilute periodic acid, the mass ratio of straw and dilute periodic acid is 5:1, and dilute periodic acid is an acid solution with a mass percentage of 10%. The sugar-containing aqueous solution is prepared by the hydrolysis reaction, the hydrolysis reaction temperature is 100-150°C, the hydrolysis reaction time is 15min-2.5h, and the hydrolysis reaction pressure is 0.1Mpa-5Mpa;

[0066] 2) Hydrolysis of sugars to prepare 5-hydroxymethyl furfural: add dilute hydrofluoric acid to the sugar-containing aqueous solution obtained in step 1), and the mass ratio of the sugar-containing aqueous solution and dilute hydrofluoric acid is 8:1. The 5-hydroxymethylfurfural aqueous solution is prepared by the reaction, the hydrolysis reaction temperature is 120~200℃, the hydrolysis reaction time is 30min~3h, and the hydrolysis reac...

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Abstract

The invention discloses a preparation method for 2,5-furandicarboxylic acid and furan polyester. The method includes steps of: hydrolyzing straw, as a raw material, under acidic conditions to preparea saccharide-containing water solution; hydrolyzing the saccharide-containing water solution under acidic conditions to obtain 5-hydroxymethylfurfural; and oxidizing the 5-hydroxymethylfurfural to prepare the 2,5-furandicarboxylic acid, which is polymerized with ethylene glycol to obtain the furan polyester. The raw materials can be regenerated and have abundant sources. The method generates fewerbyproducts and is high in yield.

Description

Technical field [0001] The invention relates to the technical field of preparation of high molecular polymer materials, in particular to a preparation method of 2,5-furandicarboxylic acid and furan polyester. Background technique [0002] Petroleum and other fossil resources converted from ancient biomass have provided sufficient energy and abundant petrochemical products for the rapid development of modern human society. However, due to its non-renewability, basic chemical products produced from fossil resources are facing increasing threats of resource depletion. Plastics synthesized from petroleum are ubiquitous in human life. The white pollution caused by them has attracted increasing attention. The non-renewable nature of petroleum will eventually be exhausted and the price will continue to rise. Industry presents huge challenges. [0003] Furan polyester material PEF, as a new type of polyester material, belongs to a semi-crystalline compound containing multiple crystal for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/68C08G63/42
CPCC07D307/68C08G63/42
Inventor 徐海马李亚徐强李兴龙姜娜
Owner 安徽格闰科技控股有限公司