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Preparation method of amino group-containing porous material, and application of amino group-containing porous material in recover of waste electric appliance precious metals

A technology of porous material and melamine, applied in the field of materials, can solve problems such as the problem of processing liquid waste electrical appliances, and achieve the effect of protecting the environment

Inactive Publication Date: 2015-09-16
周卫星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, how to apply the treatment liquid is a difficult problem in the treatment process of waste electrical appliances

Method used

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  • Preparation method of amino group-containing porous material, and application of amino group-containing porous material in recover of waste electric appliance precious metals
  • Preparation method of amino group-containing porous material, and application of amino group-containing porous material in recover of waste electric appliance precious metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In 1L of ethylene glycol, add 0.20 mol of melamine and 0.30 mol of hexachlorobisphenol A, heat, stir, and keep the temperature stable at 180o C reacted for 5 hours, added 300 mL xylene, installed water separator, 136-140 o C Xylene was refluxed to take away water, polycondensed for 4 hours, stopped stirring, naturally cooled to room temperature, filtered to obtain white precipitate, washed three times with 100 mL ethanol, 80 o C was dried in vacuo to obtain a white solid 142.6g yield 94.8%. 1 HNMR (DMSO-d6): δ = 8.89 (s,1H), 7.38(s,1H).

Embodiment 2

[0031] In 1L of ethylene glycol, add 0.19 mol of melamine and 0.30 mol of hexachlorobisphenol A, heat, stir, and keep the temperature stable at 180 o C reacted for 5 hours, added 300 mL xylene, installed water separator, 136-140 o C Xylene was refluxed to take away water, polycondensed for 4 hours, stopped stirring, naturally cooled to room temperature, filtered to obtain white precipitate, washed three times with 100 mL ethanol, 80 o C was dried in vacuo to obtain 128.3 g of white solid with a yield of 85.3%.

Embodiment 3

[0033] In 1L of ethylene glycol, add 0.22 mol of melamine and 0.30 mol of hexachlorobisphenol A, heat, stir, and keep the temperature stable at 180 o C reacted for 5 hours, added 300 mL xylene, installed water separator, 136-140 o C Xylene was refluxed to take away water, polycondensed for 4 hours, stopped stirring, naturally cooled to room temperature, filtered to obtain white precipitate, washed three times with 100 mL ethanol, 80 o C was dried in vacuo to obtain 130.6 g of a white solid with a yield of 86.8%.

[0034] Known from embodiment 1-3, when the mol ratio of melamine and hexachlorobisphenol A is 3:1.9~2.2, reaction yield is higher. Will be 3: 2 according to the mol ratio of melamine and hexachlorobisphenol A, further elaborate in the embodiment.

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Abstract

The invention provides a preparation method of an amino group-containing porous material, and an application of the amino group-containing porous material, and relates to the field of materials. The preparation method of the amino group-containing porous material is characterized in that the amino group-containing porous material is obtained through copolymerizing 4,4'-(hexachloroisopropylidene)bisphenol and melamine in an alkaline solution. The amino group-containing porous material can adsorb precious metal ions to make a waste metal treatment fluid repeatedly used, so the process flow is simplified, the precious metal recovery cost is reduced, changing of wastes into valuables is realized, pollution discharge is reduced, and environmental protection and green environment requirements are met. The material can be expected to be massively applied in the future industrial production.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of a novel porous material and its application in precious metal recovery. Background technique [0002] According to statistics, the world produces 20-50 million tons of electrical equipment waste every year, with an annual growth rate of 3-8%. According to the United Nations Environment Program report, China is the second largest producer of e-waste in the world, producing more than 2.3 million tons of e-waste every year, second only to the 3 million tons of the United States. Every year, 350 million tons of e-waste flows into China through various channels. If these electronic wastes are not treated, they will not only have a serious impact on the environment, but also cause a serious waste of resources. According to statistics, an average of 1 ton of ordinary electronic waste contains 490 kg of metal, 4 kg of wires, 12 kg of circuit boards, etc. If it is not r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C22B3/24C22B7/00C22B11/00
CPCY02P10/20
Inventor 周卫星张超智
Owner 周卫星
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