A kind of primary amino-based chelating resin of acrylic series large-capacity trap copper ion and preparation method thereof
A chelating resin, acrylic technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of small adsorption capacity and complex synthesis path, and achieve large adsorption capacity and operation steps. Simple, choose the effect of good performance
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Embodiment 1
[0047] The preparation method of the primary amino-based chelating resin of the acrylic system large-capacity trap copper ion of present embodiment 1, its steps are:
[0048] 1) Add 250mL aqueous solution containing 1% polyvinyl alcohol and 8% NaCl to a 500mL three-neck flask equipped with a stirrer, reflux condenser and thermometer, raise the temperature to 40°C at a stirring speed of 50rpm, 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 at a stirring speed of 50rpm, and heat up at a speed of 5°C / 15min To 65°C, polymerize for 1h, then raise the temperature to 75°C, polymerize for 1h, continue to raise the temperature to 85°C, polymerize for 1h, then raise the temperature to 95°C, react at constant temperature for 2h, stop the reaction.
[0050] 3) The product was washed with hot water, cold water and ethanol respectively, and dried in vacuum.
[0051] 4) Extract the ...
Embodiment 2
[0057] The preparation method of the primary amino-based chelating resin of the acrylic system large-capacity trap copper ion of present embodiment 2, its steps are:
[0058] 1) Add 250mL aqueous solution containing 3% gelatin and 23%NaCl into a 500mL three-neck flask equipped with a stirrer, reflux condenser and thermometer, heat up to 40°C at a stirring speed of 80rpm, and keep for 1h.
[0059] 2) Add 25g of methyl methacrylate, 5g of triallyl cyanurate, 15mL of toluene, 30mL of n-heptane, and 0.2g of benzoyl peroxide at a stirring speed of 80rpm, and heat up at a speed of 5°C / 15min To 65°C, polymerize for 2h, then raise the temperature to 75°C, polymerize for 2h, continue to raise the temperature to 85°C, polymerize for 2h, then raise the temperature to 95°C, react at constant temperature for 4h, stop the reaction.
[0060] 3) The product was washed with hot water, cold water and ethanol respectively, and dried in vacuum.
[0061] 4) Extract the porogen with methanol throu...
Embodiment 3
[0067] The preparation method of the primary amino-based chelating resin of the acrylic system large-capacity trap copper ion of present embodiment 3, its steps are:
[0068] 1) Add 250mL aqueous solution containing 1.5% Gur gum and 20% NaCl to a 500mL three-neck flask equipped with a stirrer, reflux condenser and thermometer, heat up to 40°C at a stirring speed of 100rpm, and keep for 1h.
[0069] 2) Add 25g of ethyl acrylate, 1g of trimethacrylic acid (trimethylolpropyl) ester, 15mL of ethyl acetate, 40mL of n-heptane, 0.2g of benzoyl peroxide at a stirring speed of 100rpm and mix at 5°C The temperature was raised to 65°C at a speed of / 30min, polymerized for 5 hours, then raised to 75°C, polymerized for 2 hours, continued to heat up to 85°C, polymerized for 5 hours, then heated to 95°C, kept at constant temperature for 10 hours, and stopped.
[0070] 3) The product was washed with hot water, cold water and ethanol respectively, and dried in vacuum.
[0071] 4) Extract the ...
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