A kind of synthetic method of polymeric ionic liquid catalyst

[0020] Example 1:

[0021] A kind of synthetic method of polymeric ionic liquid catalyst, synthesizes according to the following steps:

[0022] 1) Place 4g of styrene, 3.5g of vinylimidazole, 4g of divinylbenzene and 10g of isooctane in a round-bottomed flask in turn, add 150 ml of distilled water and stir under an ice bath for 20 minutes, then add 0.5 g polyvinyl alcohol and 0.4 g azobisisobutyronitrile were added to a round-bottomed flask, stirred at 80°C for 5 hours to form a cross-linked polymer microsphere mixture, and then the cross-linked polymer microsphere mixture was cooled to room temperature and then vacuum filtered and washed four times with distilled water and ethanol respectively, and then vacuum-dried at 90 °C for 12 hours to obtain light yellow cross-linked polymer microsphere particles A;

[0023] 2) Weigh 4 g of cross-linked polymer microsphere particles A into 150 ml of ethylbenzene, then add 1.5 g of 1,3-propane sultone dropwise, and stir the reaction at 10

[0025] Example 2:

[0026] A kind of synthetic method of polymeric ionic liquid catalyst, synthesizes according to the following steps:

[0027] 1) 7g of styrene, 7g of vinylimidazole, 8g of divinylbenzene and 12g of isooctane were placed in a round-bottomed flask in turn, then 150 ml of distilled water was added and stirred for 30 minutes under an ice bath, and then 1.0 g of Polyvinyl alcohol and 0.8 g of azobisisobutyronitrile were added to a round-bottomed flask, and the mixture was stirred at 90 °C for 6 hours to form a cross-linked polymer microsphere mixture. Washed with distilled water and ethanol for four times respectively, and then vacuum-dried at 90 °C for 12 hours to obtain light yellow cross-linked polymer microsphere particles A;

[0028] 2) Weigh 8 g of cross-linked polymer microsphere particles A into 150 ml of ethylbenzene, then add 6.0 g of 1,3-propane sultone dropwise, and stir the reaction at 110 ° C for 18 hours, then Perform vacuum filtration, wash the fil

[0030] Example 3:

[0031] A kind of synthetic method of polymeric ionic liquid catalyst, synthesizes according to the following steps:

[0032]1) Place 11 g of styrene, 10.5 g of vinylimidazole, 12 g of divinylbenzene and 15 g of isooctane in a round-bottomed flask in turn, add 150 ml of distilled water, and stir under an ice bath for 40 minutes, then add 1.5 g polyvinyl alcohol and 1.0 g azobisisobutyronitrile were added to a round-bottomed flask, and the mixture was stirred at 110 °C for 8 hours to form a cross-linked polymer microsphere mixture. After that, the cross-linked polymer microsphere mixture was cooled to room temperature and then vacuum filtered. and washed four times with distilled water and ethanol respectively, and then vacuum-dried at 90 °C for 12 hours to obtain light yellow cross-linked polymer microsphere particles A;

[0033] 2) Weigh 12g of cross-linked polymer microsphere particles A into 150ml of ethylbenzene, then add 4.5g of 1,3-propane sultone dropwi