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 co

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
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Example Embodiment

[0102] Example 1: Preparation of Porous Catechol Formaldehyde Resin

[0103] 2.20g of catechol, 2ml of formaldehyde (37wt%) and 5ml of concentrated hydrochloric acid were added together in 10ml of ethanol, stirred to dissolve it completely, the above solution was loaded into the reaction kettle, and the resulting gel was smashed into pieces at 100°C for 5 hours. , add 50 g of ethanol, stir for 6 hours, filter, wash with ethanol, the filter cake is naturally dried to about 80% ethanol content, and then ground, dried at 120 ° C under nitrogen atmosphere to obtain 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 microscope photo of the porous catechol formaldehyde resin prepared in this example is as follows: figure 1 shown, figure 1 The macroporous structure of the material and its particle morphology are visually displayed. The nitrogen adsorption-desorption isotherm...

Example Embodiment

[0111] Example 2: Porous catechol acetaldehyde resin (base catalysis)

[0112] 2.20g of catechol, 3ml of acetaldehyde (37wt%) and 0.5g of NaOH were added together in 10ml of ethanol, and stirred to dissolve it completely. Add 50 g of 5wt% hydrochloric acid ethanol solution, stir for 6 hours, filter, wash with ethanol, the filter cake is naturally dried to about 40% ethanol content, and then ground, and dried at 120 ° C under nitrogen atmosphere to obtain light black powder, the obtained 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 shown, figure 2 It shows that the material has high specific surface area and pore volume and hierarchical pore structure, in which the phenol formaldehyde resin is mainly micropores. The micropore pore size distribution of the resin is as follows image 3 shown, image 3 This material shows a very sharp micropore...

Example Embodiment

[0114] Example 3: Porous catechol acetaldehyde resin (acid catalyzed)

[0115] 2.20g of catechol, 3ml of acetaldehyde (37wt%) and 5ml of concentrated hydrochloric acid were added together in 10ml of ethanol, stirred to dissolve it completely, the above solution was loaded into the reactor, and the resulting gel was incubated at 100°C for 10 hours. crushed, add 50 g of ethanol and stir for 6 hours, filter, wash with ethanol, the filter cake is naturally dried to about 40% ethanol content, and then ground, and dried at 120°C in a nitrogen atmosphere to obtain a light black powder. The pore volume of the obtained material is 1.6cm 3 g -1 , the specific surface area is 879m 2 g -1 . The infrared spectrum of the resin material is as follows Figure 4 shown, Figure 4 It shows that the material is a phenolic resin obtained by dehydration condensation of phenol and aldehyde.

[0116] According to the method of Example 1, the obtained material measured the adsorption amounts of...

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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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