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Preparation method and oxygen reduction performance of semi-porphyrazine polymer

A technology for porphyrazines and polymers, which is applied in chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, chemical/physical processes, etc., can solve the problems of less research on hemiporphyrazine and the like, and achieve high yields High, time-saving, simple preparation process

Inactive Publication Date: 2021-02-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the analogues of phthalocyanine, semi-porphyrazine-related research is very little, especially for the electrochemical research of semi-porphyrazine polymers, almost no one has done it.

Method used

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  • Preparation method and oxygen reduction performance of semi-porphyrazine polymer
  • Preparation method and oxygen reduction performance of semi-porphyrazine polymer
  • Preparation method and oxygen reduction performance of semi-porphyrazine polymer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Add 300 mg of 1,2,4,5-tetracyanobenzene and 400 mg of 3,5-diamino-1,2,4-triazole according to the molar ratio of 1:2.4 into a tank containing 80 ml of ethylene glycol 100 ml round-bottomed flask, and then sonicated for 15 minutes to make it evenly dispersed in ethylene glycol, then put it into a microwave reactor, stir with a magnetic stirrer, then set the microwave power to 800 W, and the temperature was 180 ° C, and then heated under this condition for 1 h to obtain a brown product, and the solution was cooled to room temperature. Then add 40 mL (1 mol / L) of hydrochloric acid solution, sonicate for 10 minutes, and then centrifuge, and then wash twice with distilled water after all centrifugation. The obtained material was dried in a freeze dryer for 12 h, and the dried powder was ground in a mortar evenly, then put into a porcelain boat, and then the powder was pyrolyzed under an argon atmosphere with a gas flow rate of 50 mL / min. The calcination process was heated...

example 2

[0022] Add 300 mg of 1,2,4,5-tetracyanobenzene and 400 mg of 3,5-diamino-1,2,4-triazole according to the molar ratio of 1:2.4 into 60 ml of ethylene glycol 100 ml round bottom flask, and then sonicated for 15 minutes to make it evenly dispersed in ethylene glycol. Similarly, 481 mg of CoCl 2 6(H 2 O) or 328 mg of FeCl 3 Dissolved in 20 ml of ethylene glycol, then mixed the two solutions, then put the mixture into a microwave reactor, stirred using a magnetic stirrer, then set the microwave power to 800 W, the temperature was 180 °C, and then in Heating under this condition for 20 min gave a dark brown product, and the solution was cooled to room temperature. Then add 40 ml (1 mol / L) of hydrochloric acid solution, sonicate for 10 minutes, then centrifuge, and wash twice with distilled water after all centrifugation. The obtained material was dried in a freeze dryer for 12 h, and the dried powder was ground in a mortar until uniform, then put into a porcelain boat, and then t...

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Abstract

The invention relates to a preparation method for synthesizing an efficient oxygen reduction catalyst, and belongs to the field of catalysis and novel materials. The invention provides a reasonable, simple and green method for preparing an efficient oxygen reduction catalyst. According to the method, 1, 2, 4, 5-tetracyanobenzene, 3, 5-diamino-1, 2, 4-triazole and metal salt are used as raw materials, ethylene glycol is used as a solvent, a covalent organic polymer is rapidly synthesized through microwaves, and then the target catalyst is obtained through high-temperature carbonization. The catalyst not only has efficient oxygen reduction catalytic activity, but also has relatively good stability, is a relatively new material, can provide some references for some people as a semi-porphyrazine polymer in the future, and has very important significance.

Description

technical field [0001] The invention belongs to the technical field of new materials, and provides a method for rapidly synthesizing hemi-porphyrazine polymers through a microwave reaction method, and applies the method to the field of electrocatalysis. Background technique [0002] At present, under the influence of the energy crisis and the expansion of industrial production, there is an urgent need to develop a clean and sustainable energy source, and hydrogen energy has begun to be favored due to its large reserves, high calorific value, and the generation of water after combustion, which is clean and pollution-free. people's attention. Fuel cells can directly convert externally supplied hydrogen energy into electrical energy through electrochemical reactions without direct combustion, so they are not limited by the Carnot cycle, and the energy conversion efficiency can reach 40% to 60%, and almost no nitrogen, Contains sulfur oxides, green and pollution-free. The prot...

Claims

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Application Information

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IPC IPC(8): B01J31/22H01M4/90C08G73/06
CPCB01J31/1815B01J2531/842B01J2531/845C08G73/0672H01M4/90Y02E60/50
Inventor 向中华岳先锦徐莉
Owner BEIJING UNIV OF CHEM TECH
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