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Sulfonated divinylbenzene polymer microspheres, preparation method and application thereof

A technology for sulfonating divinylbenzene and divinylbenzene is applied in the field of sulfonated divinylbenzene polymer microspheres, and can solve the problems of high price, environmental pollution, low efficiency, etc. Improved hydrolysis efficiency and low corrosivity

Active Publication Date: 2021-04-30
HUAIHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] At present, the hydrolysis methods of cellulose and hemicellulose mainly include: (1) acid degradation method. The acid degradation method mainly uses strong acids such as sulfuric acid and hydrochloric acid for hydrolysis. The hydrolysis of this method will produce a large amount of monosaccharide degradation products. Highly corrosive and will cause serious environmental pollution
(2) The enzymatic degradation method has the advantages of mild conditions and environmental friendliness, but its efficiency is low when degrading lignocellulose, and the raw materials need to be pretreated. In addition, the price of the enzyme is high, and the economic benefit of production is poor.

Method used

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  • Sulfonated divinylbenzene polymer microspheres, preparation method and application thereof

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preparation example Construction

[0023] The embodiment of the present invention provides a preparation method of the sulfonated divinylbenzene polymer microspheres, comprising:

[0024] S10, providing a dispersion liquid dispersed with divinylbenzene polymer microspheres; and

[0025] S20, mixing the dispersion liquid with sulfosalicylic acid, and under the condition of stirring at 100°C to 130°C, surface-treating the divinylbenzene polymer microspheres with the sulfosalicylic acid in a solvent .

[0026] In the embodiment of the present invention, a large number of sulfonic acid groups are formed on the surface of divinylbenzene polymer microspheres by sulfosalicylic acid treatment on the surface of divinylbenzene polymer microspheres, and the obtained sulfonated divinylbenzene polymer microspheres In the form of solid acid, compared with liquid strong acid, sulfonated divinylbenzene polymer microspheres are less corrosive to equipment, less environmental pollution during application, and solid acid can be ...

Embodiment 1

[0051] Preparation of divinylbenzene polymer microspheres:

[0052] Install the nitrogen protection device, and first pass high-purity nitrogen gas to remove oxygen in the device. Then add 10ml DVB, 2.4ml MMA and 600ml organic solvent acetonitrile in the polymer reaction tube under the protection of nitrogen, then add 0.3g BPO, stir at room temperature to dissolve completely; set the rotation speed at 40r / min-50r / min for stirring After 1-2 hours, the temperature is raised to 65-75° C., and monodisperse divinylbenzene polymer microspheres are obtained after reacting at this temperature for about 12 hours.

[0053] Preparation of divinylbenzene polymer microspheres by sulfonation:

[0054] Weigh about 2.0g of divinylbenzene polymer microspheres and add them to 15mL ethanol solution of sulfosalicylic acid with a concentration of 0.02g / ml, add methyl hexahydrophthalic anhydride curing agent, and heat at 110°C The reaction was carried out for 4-6 hours, so that the sulfonic acid ...

Embodiment 2

[0059] This example is basically the same as Example 1, except that the mass ratio of sulfonated divinylbenzene polymer microspheres to pretreated hemicellulose is 1:15.

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Abstract

The invention discloses a preparation method of sulfonated divinylbenzene polymer microspheres, comprising: providing a dispersion liquid in which divinylbenzene polymer microspheres are dispersed; and mixing the dispersion liquid with sulfosalicylic acid , under the condition of stirring at 100° C. to 130° C., surface-treating the divinylbenzene polymer microspheres with the sulfosalicylic acid in a solvent. The invention also discloses a sulfonated divinylbenzene polymer microsphere and its application.

Description

technical field [0001] The invention relates to the field of green energy-saving chemical materials, in particular to a sulfonated divinylbenzene polymer microsphere, a preparation method and an application thereof. Background technique [0002] In recent years, the development and utilization of renewable resources have been paid more and more attention. Lignocellulosic biomass is the most abundant renewable resource on earth. There are about 600 million tons of cellulose resources that can be developed in my country. Therefore, the comprehensive Utilization is of great significance to the sustainable development of our country. Cellulose and hemicellulose are one of the main components of lignocellulosic biomass, and their hydrolysates are widely used in functional food, feed, medicine and other fields. Currently, the hydrolysates of cellulose and hemicellulose are sold in the domestic market demand is growing day by day. [0003] At present, the hydrolysis methods of cel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/14C08J9/28C08B15/02C08B37/14C08F212/36C08F220/14C08L25/02
CPCC08B15/02C08B37/009C08F212/36C08J7/14C08J9/28C08J2325/02C08F220/14
Inventor 罗琼林曾瞬钦管湘红苏胜培胡扬剑欧阳跃军
Owner HUAIHUA UNIV
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