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A kind of preparation method of activated carbon fiber supported aminopyridine metal complex

A technology of activated carbon fiber and metal complex, which is applied in the field of activated carbon fiber-supported aminopyridine iron catalyst and its preparation, can solve problems such as narrow pH adaptability, and achieve the effects of simple method, high catalytic activity and good reusability

Active Publication Date: 2014-10-29
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that existing Fenton and Fenton-like catalysts have narrow pH adaptability, and provide a method for preparing activated carbon fiber-supported aminopyridine metal complexes with simple method, low cost and easy industrial production

Method used

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  • A kind of preparation method of activated carbon fiber supported aminopyridine metal complex
  • A kind of preparation method of activated carbon fiber supported aminopyridine metal complex

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Embodiment 1

[0025] 4-aminopyridine and FeCl 3 Dissolve in DMF solution respectively, prepare 4-aminopyridine and FeCl respectively 3 solution, under the action of a magnetic stirrer, the FeCl 3 The solution was gradually added dropwise to the 4-aminopyridine solution, FeCl 3 The molar ratio with 4-aminopyridine is 1:4, react at 30°C for 30 minutes to obtain 4-aminopyridine iron solution.

[0026] The polyacrylonitrile-based activated carbon fiber was immersed in concentrated nitric acid aqueous solution (the volume ratio of nitric acid: water was 1:3) for 15 hours, then washed with deionized water until neutral, dried in an oven at 90°C for 12 hours, and then dried at 130°C °C in a vacuum oven for 14 hours to obtain polyacrylonitrile-based activated carbon fibers pretreated with nitric acid. Adding excess SOCl to pretreated polyacrylonitrile-based activated carbon fibers 2 , react at 90°C for 6h, then raise the temperature to 130°C to remove the remaining SOCl 2 , Cooling available a...

Embodiment 2

[0029] 2-aminopyridine and FeCl 3 Dissolve in DMF solution respectively, prepare 2-aminopyridine and FeCl respectively 3 solution, under the action of a magnetic stirrer, the FeCl 3 The solution was gradually added dropwise to the 2-aminopyridine solution, FeCl 3 The molar ratio with 2-aminopyridine is 1:4, react at 30°C for 30 minutes to obtain 2-aminopyridine iron solution.

[0030] The polyacrylonitrile-based activated carbon fiber was immersed in concentrated nitric acid aqueous solution (the volume ratio of nitric acid: water was 1:3) for 15 hours, then washed with deionized water until neutral, dried in an oven at 90°C for 12 hours, and then dried at 130°C °C in a vacuum oven for 14 hours to obtain polyacrylonitrile-based activated carbon fibers pretreated with nitric acid. Adding excess SOCl to pretreated polyacrylonitrile-based activated carbon fibers 2 , react at 90°C for 6h, then raise the temperature to 130°C to remove the remaining SOCl 2 , Cooling available a...

Embodiment 3

[0033] 4-aminopyridine and CoCl 2 Dissolve in DMF solution respectively, prepare 4-aminopyridine and CoCl respectively 2 solution, under the action of a magnetic stirrer, the CoCl 2 The solution was gradually added dropwise to the 4-aminopyridine solution, CoCl 2 The molar ratio with 4-aminopyridine is 1:4, react at 30°C for 30 minutes to obtain 4-aminopyridine cobalt solution.

[0034] The polyacrylonitrile-based activated carbon fiber was immersed in concentrated nitric acid aqueous solution (the volume ratio of nitric acid: water was 1:3) for 15 hours, then washed with deionized water until neutral, dried in an oven at 90°C for 12 hours, and then dried at 130°C °C in a vacuum oven for 14 hours to obtain polyacrylonitrile-based activated carbon fibers pretreated with nitric acid. Adding excess SOCl to pretreated polyacrylonitrile-based activated carbon fibers 2 , react at 90°C for 6h, then raise the temperature to 130°C to remove excess SOCl 2 , Cooling available acyl c...

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Abstract

The invention discloses a preparation method of an active carbon fiber loaded aminopyridine metal complex. The preparation method comprises the following steps of: (1) dissolving aminopyridine and metal salt in an organic solvent respectively so as to prepare aminopyridine solution and metal salt solution; (2) adding the metal salt solution in the aminopyridine solution drop by drop so as to obtain aminopyridine metal complex solution; (3) processing pretreated active carbon fiber with thionyl chloride (SOCl2) so as to obtain active carbon fiber with acyl chlorides; and (4) adding the acyl chloride-based metal complex solution in the active carbon fiber with acyl chlorides for reaction, and preparing the active carbon fiber loaded aminopyridine metal complex through separation, washing and drying. According to the method, the simplicity is realized, the cost is low and the industrialized production is easy; and moreover, the used organic solvent can be recycled; and the preparation method is economical and environment-friendly.

Description

technical field [0001] The invention relates to an activated carbon fiber-supported aminopyridine iron catalyst for printing and dyeing wastewater treatment and a preparation method thereof. Background technique [0002] by Fe 2+ / Fe 3+ and H 2 o 2 The composition of Fenton's reagent is an advanced oxidation technique applied to wastewater treatment, which is mainly attributed to the H 2 o 2 in Fe 2+ / Fe 3+ A large number of strong oxidizing hydroxyl radicals (oxidation potential of 2.8V) can be generated in the presence of , and they can react with most organic pollutants in wastewater. But since Fe 2+ / Fe 3+ When the pH is greater than 3, flocculent precipitation will occur, which greatly reduces the reaction efficiency, so this type of reaction can only be carried out in a strongly acidic medium with a pH less than 3. Studies have shown that the effective coordination of metal and organic complexes is expected to broaden the pH range of Fenton's reagent. Collins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22
Inventor 姚玉元郑彬彬朱舜吕汪洋陈文兴
Owner ZHEJIANG SCI-TECH UNIV
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