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Condensation-type adsorbent resin microballon containing phenolic hydroxyl and preparation method thereof

A technology of adsorption resin and phenolic hydroxyl group, which is applied in the field of polycondensation adsorption resin microspheres and its preparation, can solve the problems of unsatisfactory adsorption performance, high cost, and environmental pollution, and achieve significant economic benefits and environmental protection benefits. Production The effect of low cost and strong adsorption capacity

Inactive Publication Date: 2011-07-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a kind of polycondensation type adsorption resin microsphere containing phenolic hydroxyl group and preparation method thereof; Solve the complex preparation process, high cost, unsatisfactory adsorption performance of the prepared product and product washing problem in the existing polymer adsorption resin in the prior art. It is relatively difficult and has problems such as pollution to the environment. The polycondensation type adsorption resin microspheres of the present invention are relatively friendly to the environment, have few preparation steps, low cost, uniform ball diameter distribution, good adsorption performance, and simple preparation process

Method used

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preparation example Construction

[0026] The preparation method comprises the following steps:

[0027] (1) phenolic homologues, formaldehyde, water, dispersant, porogen and catalyst are added in the reactor to form a reaction system; wherein in parts by weight, phenolic homologues are 100 parts, formaldehyde is 120-180 parts, 700-800 parts of water, 2.6-3.0 parts of dispersant, 40-90 parts of porogen and 1.8-2.5 parts of catalyst;

[0028] (2) stirring and heating the reaction system at a rate of 165-205 r / min, and allowing it to react at a temperature of 90-100° C. for 30-60 minutes;

[0029] (3) Add 6-10 parts of cross-linking agent to the reaction system of step (2), and make it react at a temperature of 90-100° C. for 220-260 minutes;

[0030] (4) adjust the pH value of the reaction system in step (3) to 1-3 with an acid, and make the gel solidify for 20-40 minutes;

[0031] (5) cooling down to below 40° C., taking out the reaction product; washing with water, filtering and drying the reaction product t...

Embodiment 1

[0037] Put 100kg of phenol, 120kg of formaldehyde (concentration 37%), 7.322kg of catalyst (NaOH 25wt%), 750kg of dispersant (0.35wt% of polyvinyl alcohol PVA1788 aqueous solution), and 50kg of porogen (dibutyl phthalate) into the reaction In the still, stir at a rate of 165r / min and heat up to 90-100°C, then reflux at a constant temperature for 40 minutes, add 6kg of cross-linking agent (hexamethylenetetramine HMTA), continue polymerization for 4 hours, and then use 1mol / L hydrochloric acid Adjust the pH value to 1-2, heat and solidify for 30 minutes, stop heating, add 1000L distilled water, stir and cool to room temperature. The product is resin microspheres with a particle size around 0.2 mm. More than 75% of the particle size of microsphere products is between 0.25-0.83 mm, and the microspheres are regular in shape and high in sphericity. When pH=57, the adsorption amount of copper ion is relatively high, about 35.5mg / g; when pH=7, the adsorption amount of fuchsin solutio...

Embodiment 2

[0039] With 100kg phenol, formaldehyde (concentration 37%) 160kg, catalyst (NaOH 25wt%) 7.322kg, dispersant (PVA aqueous solution 0.375wt%) 750kg, porogen (toluene and dibutyl phthalate with 4: 1 mass Proportion mixing) 50kg was put into the reactor, stirred at a rate of 185r / min and heated to 90-100°C, then refluxed at a constant temperature for 40 minutes, added 6kg of cross-linking agent HMTA, continued polymerization for 4h, and adjusted with 1mol / L hydrochloric acid When the pH value reaches 1-2, heat and solidify for 30 minutes, stop heating, add 1000L distilled water, stir and cool to room temperature. The product is resin microspheres with a particle size around 0.2 mm. More than 96% of the particle size of microsphere products is between 0.2-0.35mm, and the shape of microspheres is regular and the degree of sphericity is high. The adsorption amount of copper ion in the range of pH=4~8 is relatively stable, 36~36.5mg / g; when pH=7, the adsorption amount of magenta solu...

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Abstract

The invention provides a condensation-type adsorbent resin microballon containing phenolic hydroxyl and a preparation method thereof, belonging to the technical field of high-molecular adsorbent resin and solving problems that the high-molecular adsorbent resin in the prior art has complex preparation technique, high cost, the prepared product is unsatisfactory in the adsorbent performance, the product washing is relatively difficult and pollutes the environment and the like. The adsorbent resin microballon containing phenolic hydroxyl comprises raw materials phenol homolog, methanal, water, dispersant, pore-forming agent, catalytic agent and crosslinker; the preparation method is as follows: phenol homolog and methanal carry out suspension polymerization in the circumstance of existence of water, dispersant, pore-forming agent, catalytic agent and crosslinker to obtain the microballon. The condensation-type adsorbent resin microballon is environmental friendly, has few preparation steps, low cost, uniform sphere diameter distribution, good adsorption property and simple preparation technique.

Description

technical field [0001] The invention belongs to the technical field of polymer adsorption resins, and more specifically relates to polycondensation type adsorption resin microspheres containing phenolic hydroxyl groups and a preparation method thereof. Background technique [0002] Polymer adsorption resin is a new type of adsorption material for metal ions and organic pollutants, which has good adsorption performance, high adsorption selectivity, easy desorption and regeneration, good mechanical strength, long service life and wide application range. Among them, the phenolic adsorption resin obtained by polycondensation of phenols and aldehydes has more phenolic hydroxyl groups, and the phenolic hydroxyl groups are hydrogen bond donors, which can be combined with hydrogen bond acceptors such as alkaloids such as theophylline and caffeine or amino groups. Organic substances, etc. form hydrogen bonds, thus showing good adsorption properties for such substances. [0003] At h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C08G8/08C08G8/10C08G8/24
Inventor 张卫英李晓张慕诗
Owner FUZHOU UNIV
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