Mixed type high-mesoporous-ratio core-shell structure multiphase nickel-loaded activated carbon

A core-shell structure, high mesoporous technology, applied in the direction of electrodes, metal/metal oxide/metal hydroxide catalysts, electrolysis process, etc., can solve the problems of complex composition, unsatisfactory, difficult raw material pretreatment, etc.

Pending Publication Date: 2021-09-14
江苏众志新禹环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of biomass activated carbon, the pretreatment of raw materials is difficult, and it is difficult to prepare an activated carbon catalyst with stable and efficient performance. The preparation of activated carbon from petroleum processed products causes serious environmental pollution.
Due to the shortcomings of the existing activated carbon described above, it is not ideal as an activated carbon-supported catalyst material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] a. 20 parts of poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, 0.2 parts of nickel chloride solution, 20 parts of NH 4 Put the OH solution into an oil bath at 200 degrees Celsius for 2 hours, take it out and dry it to obtain the precursor I. The concentration of nickel chloride solution is 130g / L, NH 4 The concentration of OH solution is 525g / L.

[0015] b. Place precursor I in a tube furnace and pyrolyze it in a nitrogen atmosphere at 800 degrees Celsius for 40 minutes to obtain and take out precursor II; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 degrees Celsius / min.

[0016] c. Disperse the precursor II into 50 parts of water, then add 25 parts of sodium hydroxide solid, stir for 36 hours, filter and dry to obtain the product.

[0017] d. Finally, wash the product until it is neutral, take it out and dry it to get the activated carbon.

[0018] The specific surface area of ​​the hybrid high-mesopority ratio c...

Embodiment 2

[0020] a. 40 parts of poly(4-styrenesulfonic acid-copolymerization-maleic acid) sodium salt, 4 parts of nickel chloride solution, 80 parts of NH 4 Put the OH solution into an oil bath at 200 degrees Celsius for 2 hours, take it out and dry it to obtain the precursor I. The concentration of nickel chloride solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0021] b. Place precursor I in a tube furnace and pyrolyze it in a nitrogen atmosphere at 800 degrees Celsius for 40 minutes to obtain and take out precursor II; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 degrees Celsius / min.

[0022] c. Disperse the precursor II into 50 parts of water, then add 50 parts of sodium hydroxide solid, stir for 36 hours, filter and dry to obtain the product.

[0023] d. Finally, wash the product until it is neutral, take it out and dry it to get the activated carbon.

[0024] The specific surface area of ​​the hybrid high-mesop...

Embodiment 3

[0026] a. 30 parts of poly(4-styrenesulfonic acid-copolymerization-maleic acid) sodium salt, 0.3 parts of nickel chloride solution, 50 parts of NH 4 Put the OH solution into an oil bath at 200 degrees Celsius for 2 hours, take it out and dry it to obtain the precursor I. The concentration of nickel chloride solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0027] b. Place precursor I in a tube furnace and pyrolyze it in a nitrogen atmosphere at 800 degrees Celsius for 40 minutes to obtain and take out precursor II; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 degrees Celsius / min.

[0028] c. Disperse the precursor II into 50 parts of water, then add 50 parts of sodium hydroxide solid, stir for 36 hours, filter and dry to obtain the product.

[0029] d. Finally, wash the product until it is neutral, take it out and dry it to get the activated carbon.

[0030] The specific surface area of ​​the hybrid high-mes...

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Abstract

The invention relates to the field of activated carbon materials, and in particular, relates to mixed type high-mesoporous-ratio core-shell structure multiphase nickel-loaded activated carbon. The activated carbon material comprises the raw materials in parts by weight: 20 to 40 parts of poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, 0.2 to 4 parts of a nickel chloride solution, 20 to 80 parts of an alkaline precipitator, 50 parts of water and 25 to 50 parts of a sodium hydroxide solid. Due to the large specific surface area, the metal catalyst can be well dispersed, exposure of active sites of the catalyst is increased, and the catalytic efficiency is improved; the activated carbon material is stable and can effectively evaluate the intrinsic activity of the metal catalyst as a catalyst carrier; and the carbon source of the activated carbon is wide, and the activated carbon can be prepared from biomass, petroleum processed products and the like mainly containing carbon elements through pyrolysis.

Description

technical field [0001] The invention relates to the field of activated carbon materials, in particular to a mixed-type high mesopore ratio core-shell structure heterogeneous nickel-loaded activated carbon. Background technique [0002] With the gradual reduction of fossil fuels and the intensification of environmental crisis, the preparation of clean hydrogen by electrochemical hydrogen evolution has become an important choice to replace fossil energy. Currently, small-scale commercial catalyst materials are mainly noble metal-based materials, such as Pt-based materials. Large-scale commercial use is limited by the scarcity and high cost of precious metals. At present, it is urgent to find a low-cost metal catalyst to replace the noble metal catalyst, reduce the cost, and realize large-scale commercial production. However, pure metal catalysts generally have poor dispersion of metal particles, resulting in low catalytic activity, and supported catalysts can solve this prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/02B01J35/10C25B1/04C25B11/091
CPCB01J23/755B01J35/1028B01J35/1042B01J35/1038B01J35/023B01J35/008B01J35/0033C25B1/04C25B11/04Y02E60/36
Inventor 季跃恒李小虎茹晓伟匡林慧
Owner 江苏众志新禹环境科技有限公司
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