FeCo-MOFs-biomass-based nitrogen-rich porous carbon oxygen reduction catalyst and preparation method thereof
A feco-mofs-, biomass technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of hindering the diffusion and transmission of electrons and reaction products, low ability to adsorb oxygen atoms, Transition metal carbon-based catalysts have fewer active sites to achieve the effects of promoting migration, reducing agglomeration and agglomeration, and increasing diffusion and migration rates
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[0026] The nitrogen-enriched biomass preparation method comprises the following steps:
[0027] (1) Add ethanol solution to the reaction bottle, then add melamine and glutaraldehyde, stir evenly, place the solution in a water bath and heat to 80-90°C, stir and reflux at a constant speed for 10-15h.
[0028] (2) add L-lysine and catalyzer p-toluenesulfonic acid in the solution, melamine, glutaraldehyde, L-lysine and p-toluenesulfonic acid, the mol ratio of the substance of four is 1: 30-40:35-48:1.5-2, transfer the solution into the polytetrafluoroethylene hydrothermal reaction kettle, place it in the heating box of the reaction kettle, heat it to 160-180°C, and carry out the condensation chain extension reaction for 30-35h. The solution is cooled to room temperature, concentrated under reduced pressure to remove the solvent, the solid product is washed with an appropriate amount of ether solvent, and fully dried to prepare macromolecular nitrogen-rich biomass based on aldehyde...
Embodiment 1
[0036] (1) Preparation of nitrogen-enriched biomass component 1: Preparation Add ethanol solution to the reaction flask, then add melamine and glutaraldehyde, stir evenly, heat the solution in a water bath to 80°C, stir and reflux at a constant speed for 10 hours, Add L-lysine and catalyst p-toluenesulfonic acid, melamine, glutaraldehyde, L-lysine and p-toluenesulfonic acid in the solution, the molar ratio of the four substances is 1:30:35 : 1.5, the solution is transferred into a polytetrafluoroethylene hydrothermal reaction kettle, placed in a reaction kettle heating box, heated to 160°C, and subjected to condensation chain extension reaction for 30h, the solution is cooled to room temperature, concentrated under reduced pressure to remove the solvent, and an appropriate amount of The solid product was washed with diethyl ether solvent and fully dried to prepare macromolecular nitrogen-rich biomass component 1 based on aldolamine condensation chain extension reaction.
[003...
Embodiment 2
[0042] (1) Preparation of nitrogen-rich biomass component 2: preparation Add ethanol solution to the reaction flask, then add melamine and glutaraldehyde, stir evenly, heat the solution in a water bath to 90°C, stir and reflux at a constant speed for 10 hours, Add L-lysine and catalyst p-toluenesulfonic acid, melamine, glutaraldehyde, L-lysine and p-toluenesulfonic acid in the solution, the molar ratio of the four substances is 1:30:48 : 2, the solution is transferred into a polytetrafluoroethylene hydrothermal reaction kettle, placed in a reaction kettle heating box, heated to 160-180° C., performing condensation chain extension reaction for 35 hours, cooling the solution to room temperature, and concentrating under reduced pressure to remove the solvent. The solid product is washed with an appropriate amount of diethyl ether solvent and fully dried to prepare macromolecular nitrogen-rich biomass component 2 based on aldolamine condensation chain extension reaction.
[0043] ...
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