Preparation method of high-mesoporous-ratio composite core-shell structure multiphase nickel-loaded activated carbon material

A core-shell structure and composite technology, applied in chemical instruments and methods, electrodes, metal/metal oxide/metal hydroxide catalysts, etc., can solve the difficulty of preparing activated carbon catalysts with stable and efficient performance and the difficulty of raw material pretreatment Large, serious environmental pollution and other problems, to achieve the effect of good dispersion, large specific surface area, and a wide range of carbon sources

Inactive Publication Date: 2020-10-09
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

[0017] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.01:1 and then taken out and dried for 2 hours to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0018] b. The precursor I was dried and placed in a tube furnace, and pyrolyzed under a nitrogen atmosphere of 800 degrees Celsius for 40 minutes to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50°C / min.

[0019] c. Disperse the precursor II into the aqueous solution, then add NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of precursor II, aqueous solution, and NaOH solid is 1:20:10.

[0020] d. Finally, put the product into a Soxhlet extractor and wash for three days until the product washing liquid is ne...

Embodiment 2

[0023] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.1:2 for 6 hours, taken out and dried to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0024] b. The precursor I was placed in a tube furnace, and pyrolyzed for 120 minutes in a nitrogen atmosphere at 1000 degrees Celsius to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50 °C / min.

[0025] c. Disperse the precursor II into the aqueous solution, then add the NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of the precursor II, the aqueous solution and the NaOH solid is 1:20:20;

[0026] d. Finally, put the product into a Soxhlet extractor and wash for three days until the sample washing liquid is neutra...

Embodiment 3

[0029] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.05:1 for 4 hours, taken out and dried to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.

[0030] b. The precursor I was placed in a tube furnace, and pyrolyzed for 40 minutes under a nitrogen atmosphere at 900 degrees Celsius to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50 °C / min.

[0031] c. Disperse the precursor II into the aqueous solution, then add the NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of the precursor II, the aqueous solution and the NaOH solid is 1:20:20;

[0032] d. Finally, put the product into a Soxhlet extractor and wash for three days until the sample washing liquid is neut...

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Abstract

The invention relates to the field of activated carbon materials, in particular to a preparation method of a high-mesoporous-ratio composite core-shell structure multiphase nickel-loaded activated carbon material. The preparation method comprises the following specific steps: step a, putting poly (4-styrenesulfonic acid-co-maleic acid) sodium salt, a NiCl2 solution and an NH4OH solution into an oil bath pot at a temperature of 200 DEG C according to a certain proportion, performing oil bath for 2-6 hours, taking out a product, and performing drying; step b, after drying, carrying out pyrolysisfor 30 to 120 minutes in a nitrogen atmosphere at a temperature of 800 to 1000 DEG C; step c, dispersing a precursor II into an aqueous solution, adding NaOH solid, performing stirring for 36 hours,performing filtering and drying; and step d, washing the product for three days. The prepared material has a large specific surface area, so that the metal catalyst can be well dispersed, the exposureof active sites of the catalyst is increased, and the catalytic efficiency is improved; the activated carbon material is stable, and can be used as a catalyst carrier to more effectively evaluate theintrinsic activity of the metal catalyst.

Description

technical field [0001] The invention relates to the field of activated carbon materials, in particular to a preparation method of a high mesoporous ratio composite core-shell structure heterogeneous nickel-supported activated carbon material. 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 alternative to fossil energy. Currently, small 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. There is an urgent need to find a low-cost metal catalyst to replace the precious metal catalyst, so as to reduce the cost and enable large-scale commercial production. However, pure metal catalysts generally have poor dispersion of metal particles, resulting in low catalytic activity, and su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/02B01J35/10C25B1/04C25B11/06
CPCB01J23/755B01J35/0033B01J35/008B01J35/023B01J35/1028B01J35/1038B01J35/1042C25B1/04C25B11/04Y02E60/36
Inventor 石勇任铁真
Owner 江苏众志新禹环境科技有限公司
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