Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of cobalt nitrogen co-doped biomass carbon redox catalyst

A technology of biomass carbon and co-doping, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. Infiltration and other issues, to achieve the effect of low price, good methanol resistance and stability, and ORR performance improvement

Active Publication Date: 2022-02-01
HEFEI UNIV OF TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although platinum and platinum-based catalysts show high catalytic activity, the disadvantages of high cost, poor stability and methanol resistance, and easy fuel permeation have seriously hindered the commercial application of some large-scale equipment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of cobalt nitrogen co-doped biomass carbon redox catalyst
  • A kind of preparation method of cobalt nitrogen co-doped biomass carbon redox catalyst
  • A kind of preparation method of cobalt nitrogen co-doped biomass carbon redox catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for co-doping biomass carbon with cobalt and nitrogen to improve the performance of redox catalysts. The preparation of biomass porous carbon materials: using fresh kelp as raw material, freezing with liquid nitrogen, putting it into a vacuum dryer for drying, and crushing through 20 meshes after drying Sieve for use; take the pulverized kelp and add a certain amount of potassium hydroxide to grind and mix thoroughly, put it in a porcelain boat and place it in a high-temperature furnace with a nitrogen flow rate of 1L / min and a heating rate of 5°C / min, and set a certain activation temperature and activation time; after activation The sample was first washed with 10% hydrochloric acid, then washed with deionized water until neutral, and dried by suction to obtain the final sample. Preparation of cobalt nitrogen co-doped biomass porous carbon material: First, take 20 mg of optimized biomass activated carbon, add 6 mL of deionized water to stir and disperse, after ...

Embodiment 2

[0028] A method for co-doping biomass carbon with cobalt and nitrogen to improve the performance of redox catalysts. The preparation of biomass porous carbon materials: using fresh kelp as raw material, freezing with liquid nitrogen, putting it into a vacuum dryer for drying, and crushing through 20 meshes after drying Sieve for use; take the pulverized kelp and add a certain amount of potassium hydroxide to grind and mix thoroughly, put it in a porcelain boat and place it in a high-temperature furnace with a nitrogen flow rate of 1L / min and a heating rate of 5°C / min, and set a certain activation temperature and activation time; after activation The sample was first washed with 10% hydrochloric acid, then washed with deionized water until neutral, and dried by suction to obtain the final sample. Preparation of cobalt nitrogen co-doped biomass porous carbon material: First, take 20 mg of optimized biomass activated carbon, add 6 mL of deionized water to stir and disperse, after ...

Embodiment 3

[0030]A method for co-doping biomass carbon with cobalt and nitrogen to improve the performance of redox catalysts. The preparation of biomass porous carbon materials: using fresh kelp as raw material, freezing with liquid nitrogen, putting it into a vacuum dryer for drying, and crushing through 20 meshes after drying Sieve for use; take the pulverized kelp and add a certain amount of potassium hydroxide to grind and mix thoroughly, put it in a porcelain boat and place it in a high-temperature furnace with a nitrogen flow rate of 1L / min and a heating rate of 5°C / min, and set a certain activation temperature and activation time; after activation The sample was first washed with 10% hydrochloric acid, then washed with deionized water until neutral, and dried by suction to obtain the final sample. Preparation of cobalt nitrogen co-doped biomass porous carbon material: First, take 20 mg of optimized biomass activated carbon, add 6 mL of deionized water to stir and disperse, after 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of cobalt-nitrogen co-doped biomass carbon redox catalyst. The preparation method of cobalt-nitrogen co-doped biomass carbon comprises biomass porous carbon material preparation, vacuum freeze drying, cobalt-nitrogen co-doping Cobalt-nitrogen co-doped biomass carbon is prepared by steps such as preparation of hetero-biomass porous carbon material. Compared with the prior art, the invention has the following advantages: the raw materials are easily available and inexpensive, and the performance is close to the commercial platinum-carbon catalyst, which provides a good method for exploring a non-precious metal catalyst material, and provides further experimental optimization and industrial production. Provide valid evidence.

Description

technical field [0001] The invention relates to the technical field of energy and chemical industry, in particular to a method for co-doping biomass carbon with cobalt and nitrogen to improve the performance of redox catalysts. Background technique [0002] Slow redox reaction (ORR) kinetic limitation is a major factor affecting the overall performance of various electrochemical storage and conversion devices. At present, although platinum and platinum-based catalysts show high catalytic activity, their disadvantages such as high cost, poor stability and methanol resistance, and easy fuel permeation have seriously hindered the commercial application of some large-scale equipment. Therefore, developing efficient and stable supported non-noble metal catalysts to replace noble metal catalysts has always been an important research direction in the field of catalysis. [0003] The study found that transition metal-doped carbon materials have the advantages of low cost and high c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J37/08B01J35/10
CPCB01J27/24B01J35/0033B01J35/10B01J37/082B01J37/084
Inventor 邢献军叶聪刘建华李珊张学飞
Owner HEFEI UNIV OF TECH