Preparation method of mesoporous carbon material

A mesoporous carbon and mesoporous technology, applied in the field of preparation of mesoporous carbon materials, can solve the problems of high preparation cost and unfavorable industrial production, and achieve the effect of low production cost and simple and easy preparation method

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are still some shortcomings to be overcome in the existing mesoporous carbon material preparation technology, for example, most of them need to use expensive surfactants and other organic substances, which makes the preparation cost too high and is not conducive to industrial production

Method used

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  • Preparation method of mesoporous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Mix 1g of calcium carbonate with 15mL of ethanol, stir for 10min, add 30mL of distilled water, 4g of sucrose, 20mL of silica sol, and stir for 1h;

[0035] (2) ultrasonically treating the mixture obtained in step (1) for 5 hours;

[0036] (3) Put the mixture prepared in step (2) in a water bath and stir at 70°C to evaporate the water until the mixture becomes viscous;

[0037] (4) Dry the mixture prepared in step (3) at 70°C, and then place it in a tube furnace with nitrogen at a flow rate of 30mL / min; heat up from room temperature to 900°C at 5°C / min, and keep 5h;

[0038] (5) Mix the substance obtained in step (4) with 50mL of 50% hydrochloric acid solution, treat at 150°C for 5h, then wash with water until neutral; then mix with 50mL of 20% sodium hydroxide solution, Treated under the same conditions for 5 hours, washed with water again until neutral, and finally dried at 100°C for 10 hours to prepare a mesoporous carbon material, coded as CL1. The results of t...

Embodiment 2

[0040] (1) Mix 1.5g calcium carbonate with 25mL ethanol, stir for 10min, add 30mL distilled water, 3.5g sucrose, 20mL silica sol, stir for 1h;

[0041] (2) ultrasonically treating the mixture obtained in step (1) for 4 hours;

[0042] (3) Put the mixture prepared in step (2) in a water bath and stir at 60°C to evaporate the water until the mixture becomes viscous;

[0043](4) Dry the mixture prepared in step (3) at 70°C, and then place it in a tube furnace with nitrogen at a flow rate of 30mL / min; heat up from room temperature to 850°C at 5°C / min, and keep 5h;

[0044] (5) Mix the substance obtained in step (4) with 50mL of 50% hydrochloric acid solution, treat at 150°C for 5h, then wash with water until neutral; then mix with 50mL of 20% sodium hydroxide solution, Treated under the same conditions for 5 hours, washed with water again until neutral, and finally dried at 100°C for 10 hours to prepare a mesoporous carbon material, coded as CL2. The results of the pore size dis...

Embodiment 3

[0046] (1) Mix 2g calcium carbonate with 15mL ethanol, stir for 10min, add 50mL distilled water, 5g sucrose, 20mL silica sol, stir for 1h;

[0047] (2) The mixture obtained in step (1) was ultrasonically treated for 7 h.

[0048] (3) Put the mixture prepared in step (2) in a water bath and stir at 70°C to evaporate the water until the mixture becomes viscous;

[0049] (4) Dry the mixture prepared in step (3) at 70°C, and then place it in a tube furnace with nitrogen at a flow rate of 30mL / min; heat up from room temperature to 750°C at 3°C / min, and keep 5h;

[0050] (5) Mix the substance obtained in step (4) with 50mL of 50% hydrochloric acid solution, treat at 160°C for 5h, then wash with water until neutral; then mix with 50mL of 20% sodium hydroxide solution, Treated under the same conditions for 5 hours, washed with water again until neutral, and finally dried at 100°C for 10 hours to prepare a mesoporous carbon material, coded as CL3. The results of the pore size distrib...

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Abstract

The invention provides a preparation method of a mesoporous carbon material. The mesoporous carbon material is composed of amorphous carbon and has a concentratedly distributed mesoporous channel system; and the pore size is in a range of 7 to 9 nm. The carbon material is prepared by the following steps: at first, mixing calcium carbonate and ethanol, then adding distilled water, carbohydrates, and silica sol, evenly mixing, then carrying out an ultrasonic treatment, drying, carrying out a high temperature treatment in an atmosphere of nitrogen gas, finally reacting the material with an acid solution and an alkali solution, washing, and drying to obtain the carbon material. The provided preparation method has the advantages that no pricy organic additive is used, the operation is simple and easy to perform, and the production cost is low.

Description

technical field [0001] The invention belongs to the field of synthesis of porous inorganic materials, in particular to a preparation method of mesoporous carbon materials. Background technique [0002] Since 1992, when Mobil scientists used nanostructure self-assembly technology for the first time to prepare mesoporous silica MCM-41 with uniform channels and adjustable pore diameters, mesoporous materials have quickly become a research hotspot in the field of porous materials. With the deepening of research, the matrix material of mesoporous materials has also expanded from silicon oxide to carbon materials, alumina, phosphate and so on. [0003] Carbon materials are widely used porous materials, so the development of mesoporous carbon materials with different pore diameters and pore structures can not only expand the application range of carbon materials, but also greatly improve the functions of carbon materials. There are also many methods for preparing mesoporous carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 范峰凌凤香王少军张会成陈晓刚杨春雁
Owner CHINA PETROLEUM & CHEM CORP
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