Preparation method of sucrose-based hierarchical pore active carbon

A technology of graded pores and activated carbon, which is applied in the field of preparation of sucrose-based graded pores activated carbon, which can solve the problems of low preparation efficiency, low mesopority, long pore expansion treatment time, etc., and achieve the effect of broadening the application range and large specific surface area

Inactive Publication Date: 2016-12-14
句容市百诚活性炭有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activated carbon obtained by these pore-enlarging methods still has many micropores, low mesoporosity, long pore-enlarging treatment time, and low preparation efficiency.

Method used

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  • Preparation method of sucrose-based hierarchical pore active carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step (1): Dissolve sucrose and nickel nitrate in water, wherein the mass ratio of sucrose and nickel nitrate is 40:1; stir at 80°C for 30 minutes, and stir to obtain the sucrose-nickel nitrate mixture;

[0021] Step (2): Put the sucrose-nickel nitrate mixture obtained in step (1) in a high-temperature furnace, and carry out high-temperature carbonization under the protection of an inert atmosphere, wherein the carbonization temperature is 600° C., and the carbonization time is 1 hour; material 1 is obtained;

[0022] Step (3): Add 3M hydrochloric acid to the material 1 obtained in step (2), stir at room temperature for 40 minutes, then reflux and stir at 50°C for 15 minutes; pickle, then wash with water until neutral, and dry; Get material two;

[0023] Step (4): Add KOH solution to the material 2 obtained in step (3) and mix evenly, wherein the mass ratio of material 2 to KOH is 1:1; then put it in an oven and dry it at 80°C for 30 minutes, and dry it Put the material...

Embodiment 2

[0026] Step (1): Dissolve sucrose and nickel nitrate in water, wherein the mass ratio of sucrose to nickel nitrate is 43:1; stir at 85°C for 40 minutes, and stir to obtain the sucrose-nickel nitrate mixture;

[0027] Step (2): Put the sucrose-nickel nitrate mixture obtained in step (1) in a high-temperature furnace, and carry out high-temperature carbonization under the protection of an inert atmosphere, wherein the carbonization temperature is 700° C., and the carbonization time is 2 hours; material 1 is obtained;

[0028] Step (3): add hydrochloric acid with a concentration of 4M to the material 1 obtained in step (2), stir at room temperature for 30 minutes, then reflux and stir at 55° C. for 20 minutes; pickle, then wash with water until neutral, and dry; Get material two;

[0029] Step (4): Add KOH solution to the material 2 obtained in step (3) and mix evenly, wherein the mass ratio of material 2 to KOH is 1:2; then put it in an oven and dry it at 100°C for 30 minutes, a...

Embodiment 3

[0032] Step (1): Dissolve sucrose and nickel nitrate in water, wherein the mass ratio of sucrose to nickel nitrate is 45:1; stir at 85°C for 50 minutes, and stir to obtain the sucrose-nickel nitrate mixture;

[0033] Step (2): Put the sucrose-nickel nitrate mixture obtained in step (1) in a high-temperature furnace, and carry out high-temperature carbonization under the protection of an inert atmosphere, wherein the carbonization temperature is 750° C., and the carbonization time is 2 hours; material 1 is obtained;

[0034] Step (3): add hydrochloric acid with a concentration of 4M to the material 1 obtained in step (2), stir at room temperature for 30 minutes, then reflux and stir at 60° C. for 20 minutes; pickle, then wash with water until neutral, and dry; Get material two;

[0035] Step (4): Add KOH solution to the material 2 obtained in step (3) and mix evenly, wherein the mass ratio of material 2 to KOH is 1:3; put it in an oven and dry at 100°C for 30 minutes, and dry ...

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Abstract

The invention relates to a preparation method of sucrose-based hierarchical pore active carbon. The preparation method comprises the following steps: dissolving sucrose used as a raw material and nickel nitrate in water according to a certain mass ratio, stirring while heating, uniformly mixing, then performing charring treatment on the mixed materials, treating the charred materials with hydrochloric acid to remove nickel, washing with water, drying, and further performing chemical activating treatment on the materials to obtain the hierarchical pore active carbon. The active carbon prepared by the invention has a hierarchical pore structure, wherein the mesopore rate is up to more than 37-52%, the micropore rate is 40-57%, and the macropore rate is 6-9%; meanwhile, the active carbon prepared by the invention has a high specific area which is up to 1214-1536m<2> / g; and the application range of the active carbon is widened.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of sucrose-based hierarchical pore activated carbon. Background technique [0002] Activated carbon is a carbonaceous adsorption material with developed pore structure, large specific surface area and strong selective adsorption capacity. Under certain conditions, one or some substances of liquid or gas are adsorbed, removed, purified, refined or recovered, so as to realize the purification of products and the purification of the environment. Today, activated carbon has been widely used in various fields such as industry, agriculture, national defense, transportation, food, medicine, and environmental protection. At present, the raw materials for preparing activated carbon mainly include charcoal, wood chips, various fruit shells, coal and petroleum coke and other high-carbon substances. At present, the commonly used methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
CPCC01P2006/12C01P2006/14C01P2006/17
Inventor 林丽萍叶孙龙周敦满
Owner 句容市百诚活性炭有限公司
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