Preparation and application method of polyionic liquid solid acid catalyst
A solid acid catalyst, polyionic liquid technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve problems such as unfavorable industrial production, and achieve easy separation , less corrosive, less residual effect
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Embodiment 1
[0024] After mixing 1.68g of crosslinking agent N,N-methylenebisacrylamide, 0.50g of 2-methyl-1-vinylimidazole and 0.025g of initiator azobisisobutyronitrile (AIBN), the above mixture was dissolved in In 25ml of N,N-dimethylformamide, stirred at 20°C for 3h, hydrothermally reacted at 120°C for 48h, suction filtered, and the precipitate was dried at 120°C for 12h to obtain a pale yellow precursor porous polymer solid. Dissolve the above-mentioned pale yellow precursor porous polymer solid in 30ml of absolute ethanol, stir at 20°C for 3h, continue to add 3ml of propane sultone to continue the reaction for 48h, evaporate to dryness at 60°C, and dry at 80°C for 12h to obtain Polyionic liquids with different cationic chain lengths. The polyionic liquids obtained above with different cationic chain lengths were impregnated with 10 mmol / L toluene sulfate solution at 30°C for 24 hours, then filtered with suction, and the precipitate was washed with a large amount of ether and filtered...
Embodiment 2
[0028] After mixing 1.68g of crosslinking agent N,N-methylenebisacrylamide, 0.68g of 1-vinylimidazole and 0.007g of initiator azobisisobutyronitrile (AIBN), the above mixture was dissolved in 25ml of N,N- Stir in dimethylformamide at 20°C for 3h, hydrothermally react at 120°C for 12h, filter with suction, and dry the precipitate at 120°C for 12h to obtain a pale yellow precursor porous polymer solid. Dissolve the above-mentioned pale yellow precursor porous polymer solid in 30ml of absolute ethanol, stir at 20°C for 3h, continue to add 3ml of n-bromohexane to continue the reaction for 24h, evaporate to dryness at 60°C, and dry at 80°C for 12h to obtain different Polyionic liquids with long cationic chains. The polyionic liquids obtained above with different cationic chain lengths were impregnated with 3mmol / L toluene trifluoromethanesulfonate solution at 30°C for 48h, then suction filtered, and the precipitate was washed with a large amount of ether and filtered for several ti...
Embodiment 3
[0032]After mixing 1.68g of crosslinking agent N,N-methylenebisacrylamide, 0.76g of 2-ethyl-1-vinylimidazole and 0.07g of initiator azobisisobutyronitrile (AIBN), the above mixture was dissolved in In 30ml of N,N-dimethylformamide, stirred at 20°C for 3h, hydrothermally reacted at 120°C for 24h, suction filtered, and the precipitate was dried at 120°C for 12h to obtain a pale yellow precursor porous polymer solid. Dissolve the above-mentioned pale yellow precursor porous polymer solid in 30ml of absolute ethanol, stir at 20°C for 3h, continue to add 3ml of methyl iodide to continue the reaction for 24h, evaporate to dryness at 60°C, and dry at 80°C for 12h to obtain different cationic chains. long polyionic liquids. The polyionic liquids obtained above with different cationic chain lengths were impregnated with 15mmol / L acrylic toluene solution at 30°C for 48h, then filtered with suction, and the precipitate was washed with a large amount of ether and filtered for several time...
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