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Hydrophilous porous phenolic resin as well as preparation method and application thereof

A kind of resin and phenolic resin technology, applied in the field of hydrophilic porous phenolic resin and its preparation, can solve the problems of no regeneration method, unfavorable industrial utilization and promotion, high adsorption cost, etc.

Inactive Publication Date: 2010-04-14
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, all of these reducing sorbents have no means of regeneration
Therefore, the adsorption cost will be very high, which is not conducive to large-scale industrial utilization and promotion.

Method used

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  • Hydrophilous porous phenolic resin as well as preparation method and application thereof
  • Hydrophilous porous phenolic resin as well as preparation method and application thereof
  • Hydrophilous porous phenolic resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Embodiment 1: the preparation of porous catechol formaldehyde resin

[0103] Add 2.20g of catechol, 2ml of formaldehyde (37wt%) and 5ml of concentrated hydrochloric acid into 10ml of ethanol, stir to dissolve it completely, put the above solution into a reaction kettle, keep it at 100°C for 5 hours, and mash the obtained gel , add 50g of ethanol and stir for 6 hours, filter, wash with ethanol, and grind the filter cake when the ethanol content is about 80% after natural drying, and dry under a nitrogen atmosphere at 120°C to obtain a light black powder. The pore volume of the obtained material is 2.4 cm 3 g -1 , the specific surface area is 1008m 2 g -1 .

[0104] The scanning electron micrograph of the porous catechol formaldehyde resin that makes in the present embodiment is as figure 1 as shown, figure 1 The macroporous structure of the material and its particle morphology are visually displayed in . The nitrogen adsorption-desorption isotherm of the resin is ...

Embodiment 2

[0111] Embodiment 2: porous catechol acetaldehyde resin (alkali catalysis)

[0112] Add 2.20g of catechol, 3ml of acetaldehyde (37wt%) and 0.5g of NaOH into 10ml of ethanol together, stir to make it dissolve completely, put the above solution into a reaction kettle, and keep it warm at 100°C for 10 hours, and the resulting gel is pounded Grind, add 50g 5wt% hydrochloric acid ethanol solution and stir for 6 hours, filter, wash with ethanol, dry the filter cake naturally until the ethanol content is about 40%, grind it, and dry under a nitrogen atmosphere at 120°C to obtain a light black powder. The pore volume of the material is 1.4cm 3 g -1 , the specific surface area is 807m 2 g -1 . The nitrogen adsorption-desorption isotherm of the resin is as follows figure 2 as shown, figure 2 It shows that the material has high specific surface area, pore volume and hierarchical pore structure, in which phenol-formaldehyde resin is mainly microporous. The pore size distribution ...

Embodiment 3

[0114] Embodiment 3: porous catechol acetaldehyde resin (acid catalysis)

[0115] Add 2.20g of catechol, 3ml of acetaldehyde (37wt%) and 5ml of concentrated hydrochloric acid into 10ml of ethanol, stir to make it dissolve completely, put the above solution into a reaction kettle, and keep it warm at 100°C for 10 hours. Crushed, added 50g ethanol and stirred for 6 hours, filtered, washed with ethanol, and the filter cake was naturally dried until the ethanol content was about 40%, and it was ground, and dried under a nitrogen atmosphere at 120°C to obtain a light black powder. The pore volume of the obtained material was 1.6cm 3 g -1 , the specific surface area is 879m 2 g -1 . The infrared spectrum of the resin material is shown in Figure 4 as shown, Figure 4 It shows that the material is a phenolic resin obtained by dehydration condensation of phenol and aldehyde.

[0116] Gained material is measured by the method for embodiment 1 and its gold, the adsorption capacit...

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Abstract

The invention relates to hydrophilous porous phenolic resin as well as a preparation method and the application thereof, belonging to the technical field of porous polymer materials. The hydrophilous porous phenolic resin comprises a phenol monomer and an aldehyde monomer, wherein the mole ratio of the phenol monomer to the aldehyde monomer is 1 to 1-5; structures of the phenol monomer and the aldehyde monomer are formed by micropores of 0.4-1 nanometer and mesopores of 2-50 nanometers. The hydrophilous porous phenolic resin can absorb and selectively reduce partial noble metal ions and respectively achieve the large absorption amount of gold and silver ions of 700-1500 mg / g and 1000-3000 mg / g. The preparation method of the hydrophilous porous phenolic resin has the characteristics of simple, convenient and easy technology, easy sequential processing, and the like; and in addition, the hydrophilous porous phenolic resin has large absorption amount, high selectivity for the noble metal ions and extensive application prospect in the fields of noble metal smelting and recovery, and the like.

Description

technical field [0001] The invention belongs to the technical field of porous polymer materials, and in particular relates to a hydrophilic porous phenolic resin and its preparation method and application. Background technique [0002] Since the emergence of highly crosslinked polystyrene porous polymers in the 1970s, highly crosslinked porous polymers have attracted great attention in the fields of catalysis, ion exchange, adsorption, separation, chromatography, etc., and several materials have been Industrial production. Compared with traditional activated carbon and zeolite molecular sieves, polymers may be made into separation membranes to separate gases or liquids due to their unique flexibility, which is a very significant advantage of polymer porous materials. However, since polystyrene materials are all hydrophobic, their application in aqueous solutions is greatly limited. The known methods to improve their hydrophilicity are to use hydrophilic monomers and styrene...

Claims

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Application Information

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IPC IPC(8): C08G8/04C08G8/20C08G8/24C08G8/10C08J9/28B01J20/26B01J20/34B01D15/00
Inventor 曾绍忠施剑林
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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