Method for preparing epoxy morpholine quaternary ammonium salt-modified polybenzimidazole anion exchange membrane
A technology of anion exchange membrane and polybenzimidazole, which is applied in the field of preparation of epoxy morpholine quaternary ammonium salt modified polybenzimidazole anion exchange membrane, can solve the problems of unfavorable human health and industrial production, and achieve wide industrial application Prospects, mild reaction conditions, effects of high conductivity
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Embodiment 1
[0026] (1) In a 100ml dry three-necked flask, first add 5ml of acetocyanide, then add 20ml (0.18mol) of N-methylmorpholine, 14.7ml (0.18mol) of epichlorohydrin, and after fully stirring, blow nitrogen and The temperature was raised to 40°C, and the heating was stopped after 48 hours of reaction, and a large amount of white solids were produced. Suction filtration and the obtained epoxymorpholine quaternary ammonium salt were fully washed three times with ether and once with acetone, and fully dried in a vacuum oven at 50° C. for 10 h before use.
[0027] (2) In a 100ml dry three-neck flask, add 0.646g (2mmol) of amino-containing polybenzimidazole, 17.6ml of dimethyl sulfoxide, protect with nitrogen, and raise the temperature to 80°C. After the amino-containing polybenzimidazole is fully dissolved, cool down to room temperature and add 0.387 g (2 mmol) of epoxymorpholine quaternary ammonium salt, and raise the temperature to 85° C. for 10 hours of reaction. After the reaction,...
Embodiment 2
[0031] (1) In a 100ml dry three-necked flask, first add 5ml of acetocyanide, then add 20ml (0.18mol) of N-methylmorpholine, 14.7ml (0.18mol) of epichlorohydrin, and after fully stirring, blow nitrogen and The temperature was raised to 40°C, and the heating was stopped after 48 hours of reaction, and a large amount of white solids were produced. Suction filtration and the obtained epoxymorpholine quaternary ammonium salt were fully washed three times with ether and once with acetone, and fully dried in a vacuum oven at 50° C. for 10 h before use.
[0032] (2) In a 100ml dry three-neck flask, add 0.646g (2mmol) of amino-containing polybenzimidazole, 17.6ml of dimethyl sulfoxide, protect with nitrogen, and raise the temperature to 80°C. After the amino-containing polybenzimidazole is fully dissolved, cool down to room temperature and add 0.580 g (3 mmol) of epoxymorpholine quaternary ammonium salt, then raise the temperature to 85° C., and react for 10 hours. After the reaction,...
Embodiment 3
[0036] (1) In a 100ml dry three-necked flask, first add 5ml of acetocyanide, then add 20ml (0.18mol) of N-methylmorpholine, 14.7ml (0.18mol) of epichlorohydrin, and after fully stirring, blow nitrogen and The temperature was raised to 40°C, and the heating was stopped after 48 hours of reaction, and a large amount of white solids were produced. Suction filtration and the obtained epoxymorpholine quaternary ammonium salt were fully washed three times with ether and once with acetone, and fully dried in a vacuum oven at 50° C. for 10 h before use.
[0037] (2) In a 100ml dry three-neck flask, add 0.646g (2mmol) of amino-containing polybenzimidazole, 17.6ml of dimethyl sulfoxide, protect with nitrogen, and raise the temperature to 80°C. After the amino-containing polybenzimidazole is fully dissolved, cool down to room temperature and add 0.774 g (4 mmol) of epoxymorpholine quaternary ammonium salt, and raise the temperature to 85° C. for 10 hours of reaction. After the reaction,...
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