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Acrylic-acid high-capacity primary-amino chelate resin for trapping copper ions and preparation method thereof

A chelating resin, high-capacity technology, used in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of complex synthesis paths and small adsorption capacity, and achieve simple operation steps and adsorption. The effect of large capacity and easy control of synthesis conditions

Active Publication Date: 2013-06-19
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of complicated synthesis path and small adsorption capacity of the adsorption material in the prior art, the present invention provides an acrylic primary amine-based chelating resin with a large capacity for capturing copper ions and a preparation method thereof. The preparation method costs Inexpensive, easy to operate, and the synthetic resin has a large adsorption capacity for copper ions

Method used

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  • Acrylic-acid high-capacity primary-amino chelate resin for trapping copper ions and preparation method thereof
  • Acrylic-acid high-capacity primary-amino chelate resin for trapping copper ions and preparation method thereof
  • Acrylic-acid high-capacity primary-amino chelate resin for trapping copper ions and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The preparation method of the acrylic acid-based large-capacity primary amine-based chelating resin for capturing copper ions of the present example 1 includes the following steps:

[0048] 1) In a 500mL three-necked flask equipped with a stirrer, a reflux condenser and a thermometer, add 250mL of an aqueous solution containing 1% polyvinyl alcohol and 8% NaCl, at a stirring speed of 50rpm, heat up to 40°C and keep it for 1h.

[0049] 2) Add 25g of methyl acrylate, 1g of triallyl cyanurate, 15mL of ethyl acetate, 15mL of n-heptane, and 0.2g of benzoyl peroxide under a stirring speed of 50rpm and mix, and heat up at a rate of 5℃ / 15min Polymerize for 1 hour at 65°C, then heat up to 75°C, polymerize for 1 hour, continue to heat up to 85°C, polymerize for 1 hour, then heat up to 95°C, react at a constant temperature for 2 hours, and stop the reaction.

[0050] 3) The product was washed with hot water, cold water and ethanol, and dried in vacuum.

[0051] 4) Extract the porogen with...

Embodiment 2

[0057] The preparation method of the acrylic acid-based large-capacity primary amine-based chelating resin for capturing copper ions in Example 2 includes the following steps:

[0058] 1) Add 250 mL of an aqueous solution containing 3% gelatin and 23% NaCl to a 500 mL three-necked flask equipped with a stirrer, reflux condenser and thermometer. Under a stirring speed of 80 rpm, increase the temperature to 40°C and keep it for 1 hour.

[0059] 2) Add 25g of methyl methacrylate, 5g of triallyl cyanurate, 15mL of toluene, 30mL of n-heptane, 0.2g of benzoyl peroxide at a stirring speed of 80rpm and mix, and heat up at a rate of 5℃ / 15min Polymerize for 2 hours at 65°C, then heat up to 75°C, polymerize for 2 hours, continue to heat up to 85°C, polymerize for 2 hours, then heat up to 95°C, react at a constant temperature for 4 hours, and stop the reaction.

[0060] 3) The product was washed with hot water, cold water and ethanol, and dried in vacuum.

[0061] 4) Extract the porogen with meth...

Embodiment 3

[0067] The preparation method of the acrylic acid-based large-capacity primary amino chelating resin for capturing copper ions of Example 3 includes the following steps:

[0068] 1) In a 500mL three-necked flask equipped with a stirrer, a reflux condenser and a thermometer, add 250mL of an aqueous solution containing 1.5% Gul gum and 20% NaCl, and at a stirring speed of 100rpm, the temperature is raised to 40°C and kept for 1h.

[0069] 2) Add 25g ethyl acrylate, 1g trimethacrylic acid (trimethylolpropyl) ester, 15mL ethyl acetate, 40mL n-heptane, 0.2g benzoyl peroxide and mix at a stirring speed of 100rpm. At a rate of 30 min, the temperature is raised to 65°C, polymerization is performed for 5 hours, then the temperature is increased to 75°C, the polymerization reaction is 2 hours, the temperature is continued to rise to 85°C, the polymerization is 5 hours, and then the temperature is raised to 95°C, and the reaction is kept constant for 10 hours to stop the reaction.

[0070] 3) T...

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Abstract

The invention discloses an acrylic-acid high-capacity primary-amino chelate resin for trapping copper ions and a preparation method thereof, belonging to the field of polyamine resin wastewater treatment. The structural unit of the primary-amino chelate resin disclosed by the invention is disclosed in the specification, wherein x represents a repetitive structure unit of different aminolysis reagents. The preparation method disclosed by the invention has the advantages of wide material sources, low cost, simple operation steps and controllable synthesis conditions; and the synthesized resin has superhigh adsorption capacity for copper ions.

Description

Technical field [0001] The invention belongs to the field of polyamine resin wastewater treatment, and more specifically, relates to a primary amine-based chelating resin capable of capturing copper ions with a large capacity of acrylic acid and a preparation method thereof. Background technique [0002] According to the basic chemical skeleton structure, chelating resins can be divided into polystyrene resins, polyacrylic resins, etc., and their chemical structure is an important factor affecting adsorption and regeneration performance. The framework structure, mechanical properties, active sites and adsorption and regeneration properties of polyacrylic resins are more superior. [0003] In addition to the chemical framework structure, specific surface area, pore structure and resin particle size also have an important influence on adsorption. The larger specific surface area of ​​the macroporous structure resin can provide more active sites for action, and the abundant pores are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F8/32C08J9/28B01J20/26B01J20/30C02F1/28C02F101/20
Inventor 刘福强徐超高洁巢路凌晨朱长青李爱民
Owner NANJING UNIV
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