A kind of preparation method of high temperature resistant strong alkali type anion exchange resin
A technology of exchange resin and strong base, which is applied in the direction of anion exchange, ion exchange, chemical instruments and methods, etc., and can solve problems such as difficult to realize, demanding industrial production, and harsh production conditions.
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Embodiment 1
[0029] The preparation of embodiment 1 chlorine ball
[0030] Add 55.75 g of trisodium phosphate dodecahydrate and 1.54 L of water into a 3 L four-necked flask equipped with a stirrer, condenser and thermometer, and stir to raise the temperature to 80°C. Add 55.75 g of anhydrous calcium chloride at 50°C and stir for 10 minutes. At 60°C, a mixture of 4.95 g hydroxyethyl cellulose and 20 g sodium chloride was added. At 75°C, a mixture of 7.37 g calcium lignosulfonate and 20 g sodium chloride was added. At 80°C, 157.58 g of sodium chloride was added and stirred for 30 minutes. Then add a mixed solution of 699.68 g styrene, 17.94 g divinylbenzene (80% content), 444.92 g porogen isobutanol and 7.17 g benzoyl peroxide, stir, adjust to a suitable particle size, and heat to 80°C for reaction After 1.5 hours, the temperature was raised to 82°C for 4 hours, and the temperature was raised to 88°C for 3 hours, and the temperature was continued to rise above 96°C, and the isobutanol was...
Embodiment 2
[0032] Example 2 Synthesis and Performance Evaluation of Strong Base Anion Exchange Resin with 4-Chlorobutanol as Spacer
[0033] Add 49.5 mL of 4-chlorobutanol, 800 mL of toluene, and 134 mL of 30% trimethylamine aqueous solution to a 1 L four-necked flask equipped with a stirrer, condenser and thermometer, and heat to 70 ° C for 24 hours. Distill the toluene and continuously Add toluene to 110°C and keep it warm for 2 hours. Cool to room temperature, add the above-mentioned chlorine balls and 93 mL of 30% sodium methoxide solution, heat up to 65°C and react for 24 hours, distill off toluene, and wash to obtain strong base anion exchange resin B. Its volume exchange capacity C0=0.67 mmol / L, strong base content S0=100%.
[0034] Evaluation of High Temperature Resistance of Strong Base Anion Exchange Resin
[0035]Put a certain amount of resin to be tested into the reactor, add an appropriate amount of sodium hydroxide solution of appropriate concentration, stir, keep warm at...
Embodiment 3
[0046] Example 3 Synthesis and performance evaluation of strong base anion exchange resin with 6-chlorohexanol as spacer
[0047] Add 62.5 mL of 6-chlorohexanol, 800 mL of toluene, and 134 mL of 30% trimethylamine aqueous solution to a 1 L four-necked flask equipped with a stirrer, condenser and thermometer, heat to 70°C for 24 hours, distill the toluene and continuously Add toluene to 110°C and keep it warm for 2 hours. Cool to room temperature, add the above-mentioned chlorine spheres and 93 mL of 30% sodium methoxide solution, heat up to 65°C and react for 24 hours, distill off toluene, and wash to obtain strong base anion exchange resin C. Its volume exchange capacity C0=0.65 mmol / L, strong base content S0=100%.
[0048] Accurately measure V0 = 40.0 mL of the above resin, transfer it to an autoclave, add 80 mL of 0.1 N sodium hydroxide aqueous solution, seal the autoclave, and raise the temperature to 105 ° C for 168 hours. After cooling and washing, the resin volume V=3...
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