Oxygen reduction catalyst using pyrrolyl tetrazine as precursor and preparation method thereof
A technology of pyrrolyl tetrazine and pyrrolyl tetrazine ring, which is applied in the direction of structural parts, electrical components, battery electrodes, etc., can solve the problems of complex catalyst preparation methods, difficult control of preparation process conditions, unfavorable catalyst industrial preparation, etc., to achieve Good for diffusion transfer, excellent methanol resistance, and good ORR catalytic activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0047] Example 1 Synthesis of 3,6-bis(pyrrolyl)-1,2,4,5-tetrazine monomer
[0048] Dissolve 1.18g of pyrrole in 20mL of dry tetrahydrofuran, add 1.56g of KOH, and stir at below 0°C for 30min. In addition, the tetrahydrofuran solution containing 3,6-bis(3,5-dimethylpyrazolyl)-1,2,4,5-tetrazine was slowly added dropwise to the above pyrrole salt solution, reacted at room temperature for 1 h, and then Reflux overnight. Then use petroleum ether and ethyl acetate (12:1) to pass through the column, and vacuum-dry to constant weight for future use. Monomer 3,6-(dipyrrolyl)-1,2,4,5-tetrazine 1 H NMR picture as figure 1 shown.
[0049] The reaction of embodiment 1 is as follows:
[0050]
Embodiment 2
[0051] Example 2 Preparation of Oxygen Reduction Catalyst Using Pyrrolyl Tetrazine as Precursor
[0052] 1) Synthesis of poly(3,6-dipyrrole-1,2,4,5-tetrazine): 127.2 mg of 3,6-bis(pyrrolyl)-1,2,4,5-tetrazine (DPT ) was dissolved in 25 mL of 1,2-dichloroethane, then 186.4 mg of dimethoxymethane was added, and finally 393.9 mg of FeCl was added 3 , reacted at 45°C for 5h, reacted at 80°C for 19h, settled in methanol, washed several times with methanol, and finally Soxhlet extracted for 48h, dried in vacuum to constant weight. The infrared spectrum of poly(3,6-dipyrrole-1,2,4,5-tetrazine) is as follows figure 2 shown.
[0053] The synthetic route of poly(3,6-dipyrrole-1,2,4,5-tetrazine) is shown in the following figure:
[0054]
[0055] 2) Preparation of an oxygen reduction catalyst containing a pyrrolyl tetrazine ring: take 30 mg of poly(3,6-dipyrrole-1,2,4,5-tetrazine) prepared in step 1) and put it into a porcelain crucible and place it in a tube in the furnace. Unde...
Embodiment 3
[0058] 1) Synthesis of poly(3,6-dipyrrole-1,2,4,5-tetrazine): 127.2 mg of 3,6-bis(pyrrolyl)-1,2,4,5-tetrazine (DPT ) was dissolved in 35 mL of 1,2-dichloroethane, then 364.8 mg of dimethoxymethane was added, and finally 777.6 mg of FeCl was added 3 , reacted at 30°C for 4h, reacted at 90°C for 24h, settled with ethanol, washed several times with ethanol, and finally Soxhlet extracted for 24h, dried in vacuum to constant weight.
[0059] 2) Preparation of an oxygen reduction catalyst containing a pyrrolyl tetrazine ring: take 30 mg of poly(3,6-dipyrrole-1,2,4,5-tetrazine) prepared in step 1) and put it into a porcelain crucible and place it in a tube in the furnace. Under nitrogen atmosphere, from room temperature at 5°C min -1 The heating rate is increased to 1000 ° C, after 1 hour of constant temperature, and then at 5 ° C min -1 Cooling down to room temperature at a cooling rate of 100% is a nitrogen-doped carbon material oxygen reduction catalyst with pyrrolyl tetrazine ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More