Preparation method of nickel-loaded activated carbon with large specific surface area

A technology with large specific surface area and activated carbon, applied in chemical instruments and methods, catalyst carriers, electrodes, etc., can solve the problems of serious environmental pollution, difficult pretreatment of raw materials, and difficulty in preparing activated carbon catalysts with stable and efficient performance.

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. Therefore, the existing activated carbon cannot be used as an ideal activated carbon-supported catalyst material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, nickel chloride solution, NH 4 Put the OH solution in an oil bath at 200 degrees Celsius according to the mass ratio of 1:0.01:1 for 2 hours, then take it out and dry it. The concentration of nickel chloride solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0016] b. After drying, put it in a tube furnace, and pyrolyze it for 30 minutes under a nitrogen atmosphere at 800 degrees Celsius to obtain and take out the product; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 °C / min.

[0017] c. Finally, cool the product and put it into a Soxhlet extractor for washing for three days until the washing solution of the product is neutral, then take it out and dry it to obtain activated carbon.

[0018] The specific surface area of ​​nickel loaded high specific surface activated carbon material is 1140(m 2 / g -1 ), the total pore volume is 0.58 (cm 3 / g -...

Embodiment 2

[0020] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, nickel chloride solution, NH 4 Put the OH solution in an oil bath at 200 degrees Celsius according to the mass ratio of 1:0.1:2 for 6 hours, then take it out and dry it. The concentration of nickel chloride solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0021] b. After drying, put it in a tube furnace, and pyrolyze it for 30 minutes under a nitrogen atmosphere at 800 degrees Celsius to obtain and take out the product; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 °C / min.

[0022] c. Finally, cool the product and put it into a Soxhlet extractor for washing for three days until the washing solution of the product is neutral, then take it out and dry it to obtain activated carbon.

[0023] The specific surface area of ​​the nickel-loaded high specific surface activated carbon material is 1138 (m 2 / g -1 ), the total pore volume is 0.54 (cm 3 / ...

Embodiment 3

[0025] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, nickel chloride solution, NH 4 Put the OH solution in an oil bath at 200 degrees Celsius for 4 hours according to the mass ratio of 1:0.05:1, then take it out and dry it. The concentration of nickel chloride solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0026] b. After drying, put it in a tube furnace, and pyrolyze it for 30 minutes under a nitrogen atmosphere at 800 degrees Celsius to obtain and take out the product; the flow rate of nitrogen gas is 300 mL / min; the heating rate of the tube furnace is 50 °C / min.

[0027] c. Finally, cool the product and put it into a Soxhlet extractor for washing for three days until the washing solution of the product is neutral, then take it out and dry it to obtain activated carbon.

[0028] The specific surface area of ​​the nickel-loaded high specific surface activated carbon material is 1142 (m 2 / g -1 ), the total pore volume is 0.61 (cm 3 ...

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Abstract

The invention relates to the field of activated carbon materials, and in particular, relates to a preparation method of nickel-loaded activated carbon with a large specific surface area. The preparation method comprises the specific steps: a, putting poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, a nickel chloride solution and an NH4OH solution which are blended in proportion into an oil bath pan to be subjected to oil bath, then taking out and drying, wherein the temperature of the oil bath pan is 200 DEG C, and the oil bath time is 2-6 hours; and b, drying and then putting into a tubular furnace, wherein the pyrolysis time is 30-120 minutes. The nickel-loaded activated carbon has a large specific surface area, a 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 method for preparing nickel-loaded activated carbon with a large specific surface area. 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 problem well. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J21/18B01J35/10B01J32/00C25B1/04C25B11/091
CPCB01J35/1028B01J35/1042B01J35/1038B01J35/1061B01J23/755B01J21/18C25B1/04C25B11/04B01J35/0033Y02E60/36
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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