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A kind of superfine fibrous polymer immobilized catalyst and its preparation method and application

A technology of ultra-fine fibers and catalysts, applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve the problems of difficult catalyst recovery and high equipment corrosion, and improve processing applicability and durability. performance, easy recovery and good stability

Active Publication Date: 2020-04-21
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a method for preparing an ultrafine fiber-shaped polymer immobilized catalyst, and a polymer immobilized catalyst integrating powerful catalysis, high surface activity, and easy separation with three effects is prepared. Solve the problems of difficult catalyst recovery and high equipment corrosion; the polymer-supported catalyst can be used in sugar conversion reactions

Method used

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  • A kind of superfine fibrous polymer immobilized catalyst and its preparation method and application
  • A kind of superfine fibrous polymer immobilized catalyst and its preparation method and application
  • A kind of superfine fibrous polymer immobilized catalyst and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0061] After weighing 15 g of dibromoneopentyl glycol and 18.5 g of 1-butylimidazole respectively, add them into a reaction kettle equipped with magnetic stirring, a thermometer, and a condenser. The temperature was raised to 150°C to initiate the reaction. After 5 hours of reaction, the reaction was stopped, the temperature was lowered to room temperature, washed and filtered, and dried at 80°C for 12 hours to obtain dibutylimidazole neopentyl glycol bromide.

[0062] Weigh 10 g of dibutylimidazole neopentyl glycol bromide and 8.11 g of ammonium hexafluorophosphate, dissolve them in 20 ml of deionized water, and put them into a reaction kettle with magnetic stirring. After reacting at room temperature for 5 hours, washing and filtering, and vacuum drying at 80°C for 10 hours, dibutylimidazole neopentyl glycol hexafluorophosphate was obtained.

[0063] Weigh 4 g of itaconic acid-based polyester, 1.7878 g of dibutylimidazole neopentyl glycol hexafluorophosphate, 0.5028 g of 1,4...

Embodiment 2

[0073] After weighing 15 g of dibromoneopentyl glycol and 20 g of 1-methylimidazole respectively, add them into a reaction kettle equipped with magnetic stirring, a thermometer, and a condenser. The temperature was raised to 120°C to initiate the reaction. After 8 hours of reaction, the reaction was stopped, the temperature was lowered to room temperature, washed and filtered, and dried at 80°C for 10 hours to obtain dibutylimidazole neopentyl glycol bromide.

[0074] Weigh 10 g of dimethylimidazolium neopentyl glycol bromide and 12 g of ammonium hexafluorophosphate, dissolve them in 10 ml of deionized water, and put them into a reaction kettle with magnetic stirring. After reacting at room temperature for 6 hours, washing and filtering, and vacuum drying at 80° C. for 5 hours, dibutylimidazole neopentyl glycol hexafluorophosphate was obtained.

[0075] Weighed 7.5 g of itaconic acid-based polyester, 2.7648 g of dimethylimidazolium neopentyl glycol hexafluorophosphate, 0.8950 ...

Embodiment 3

[0084] After weighing 20 g of dibromoneopentyl glycol and 35 g of 1-methylimidazole respectively, add them into a reaction kettle equipped with magnetic stirring, a thermometer, and a condenser. The temperature was raised to 140°C to initiate the reaction, and after 7 hours of reaction, the reaction was stopped, the temperature was lowered to room temperature, washed and filtered, and dried at 80°C to obtain dibutylimidazole neopentyl glycol bromide.

[0085] Weigh 10 g of dimethylimidazolium neopentyl glycol bromide and 16 g of ammonium hexafluorophosphate, and put them into a reaction kettle with magnetic stirring. After reacting at room temperature for 6 hours, washing and filtering, and vacuum drying at 80°C, dibutylimidazole neopentyl glycol hexafluorophosphate was obtained.

[0086] Weigh 6 g of itaconic acid-based polyester, 5.0564 g of dimethylimidazolium neopentyl glycol hexafluorophosphate, 0.3600 g of 1,4-butanediol, and 4.3958 g of isophorone diisocyanate. First, ...

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Abstract

The invention discloses a preparation method of a superfine-fiber-shaped polymer immobilized catalyst. The preparation method comprises the steps of: adopting functional ion-grafted itaconic acid-based polyurethane as a raw material, utilizing an electrostatic spinning process to prepare superfine fiber, and then performing cross-linking to obtain the superfine-fiber-shaped polymer immobilized catalyst, wherein the superfine fiber has a diameter of 0.01-4 [mu]m and a length of 2-150 mm. Through the preparation method of the superfine-fiber-shaped polymer immobilized catalyst, the polymer immobilized catalyst with integrated effects of powerful catalysis, high surface activity and easy separation is prepared, and the problems of difficult recovery of catalysts and bad corrosion of the catalysts to devices are solved synchronously; and the polymer immobilized catalyst can be applied to sugar conversion reactions.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to an ultrafine fibrous polymer immobilized catalyst and its preparation method and application. Background technique [0002] Biomass resources have the characteristics of large output, wide distribution, renewable, and low cost. Using them as basic raw materials in the polymer material technology industry can endow materials with the advantages of green, low cost, and renewable. However, the processing inertia of biomass resources is high, and it is difficult to directly process them into high-performance polymer materials by conventional methods that use mechanophysical transformation as the main means, thus restricting the development of biomass in the material technology industry. In recent years, with the introduction of chemical transformation ideas, the dismantling and recombination of biomass raw materials at the molecular scale can greatly avoid the limitation and influ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06B01J35/06C07C51/00C07C59/185C07D307/46C07D307/68D01F6/70C08G18/75C08G18/66C08G18/42C08G18/32
CPCB01J31/06B01J35/06C07C51/00C07D307/46C07D307/68C08G18/3848C08G18/42C08G18/6633C08G18/755D01F6/70C07C59/185
Inventor 潘宝海朱丽霞陈景刘斐那海宁朱锦
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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