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Low-density and high-elasticity hydrophobic/oleophylic carbon sponge, preparation method and applications thereof

A technology of carbon sponge and high elasticity, which is applied in the field of functional material preparation, can solve problems such as limited application, and achieve the effects of easy operation, suitable for large-scale preparation, and good adsorption effect

Inactive Publication Date: 2020-04-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, melamine-derived carbon sponge is a water-oil amphiphilic material, which limits its application in oil-water separation

Method used

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  • Low-density and high-elasticity hydrophobic/oleophylic carbon sponge, preparation method and applications thereof
  • Low-density and high-elasticity hydrophobic/oleophylic carbon sponge, preparation method and applications thereof
  • Low-density and high-elasticity hydrophobic/oleophylic carbon sponge, preparation method and applications thereof

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Experimental program
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Effect test

Embodiment 1

[0046]This embodiment provides a low-density and highly elastic hydrophobic / lipophilic carbon sponge (octadecyltrichlorosilane modified carbon sponge), which is prepared by a preparation method comprising the following steps:

[0047] 1) Wash the melamine sponge three times with deionized water and ethanol, and dry it in an oven at 80°C for 2 hours;

[0048] 2) The melamine sponge obtained in step 1) was calcined in an argon atmosphere at 800° C. for 2 h, and the heating rate was 5° C. / min to obtain a low-density and high-elastic carbon sponge (melamine-derived carbon sponge). The melamine-derived carbon sponge The density is 7.8mg / cm 3 , the extrusion deformation recovery is 96%, and then washed 3 times with deionized water and ethanol, and dried in an oven at 80°C for 2h;

[0049] 3) The melamine-derived carbon sponge obtained in step 2) was completely soaked in a toluene solution of 2 wt% octadecyltrichlorosilane for 30 minutes, and washed 5 times with toluene after taking...

Embodiment 2

[0054] This embodiment provides a low-density and highly elastic hydrophobic / lipophilic carbon sponge (hexadecyltrichlorosilane modified carbon sponge), which is prepared by a preparation method comprising the following steps:

[0055] 1) Wash the melamine sponge three times with deionized water and ethanol, and dry it in an oven at 80°C for 2 hours;

[0056] 2) The melamine sponge obtained in step 1) was calcined in an argon atmosphere at 800° C. for 2 h, and the heating rate was 5° C. / min to obtain a low-density and high-elastic carbon sponge (melamine-derived carbon sponge). The melamine-derived carbon sponge The density is 7.8mg / cm 3 , the extrusion deformation recovery is 96%, and then washed 3 times with deionized water and ethanol, and dried in an oven at 80°C for 2h;

[0057] 3) The melamine-derived carbon sponge obtained in step 2) was completely soaked in a toluene solution of 2 wt% hexadecyltrichlorosilane for 30 minutes, and washed 5 times with toluene after takin...

Embodiment 3

[0060] This embodiment provides a low-density and highly elastic hydrophobic / lipophilic carbon sponge (tetradecyltrichlorosilane modified carbon sponge), which is prepared by a preparation method comprising the following steps:

[0061] 1) Wash the melamine sponge three times with deionized water and ethanol, and dry it in an oven at 80°C for 2 hours;

[0062] 2) The melamine sponge obtained in step 1) was calcined in an argon atmosphere at 800° C. for 2 h, and the heating rate was 5° C. / min to obtain a low-density and high-elastic carbon sponge (melamine-derived carbon sponge). The melamine-derived carbon sponge The density is 7.8mg / cm 3 , the extrusion deformation recovery is 96%, and then washed 3 times with deionized water and ethanol, and dried in an oven at 80°C for 2h;

[0063] 3) The melamine-derived carbon sponge obtained in step 2) was completely soaked in a toluene solution of 2 wt% tetradecyltrichlorosilane for 30 min, and washed 5 times with toluene after taking ...

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Abstract

The invention provides low-density and high-elasticity hydrophobic / oleophylic carbon sponge, a preparation method and applications thereof, wherein melamine-derived carbon sponge is soaked in a surface modifier solution, and the surface of the melamine-derived carbon sponge is modified with the surface modifier to prepare the low-density and high-elasticity hydrophobic / oleophylic carbon sponge. The hydrophobic / oleophylic carbon sponge provided by the invention has good adsorption effect on oil substances, can be used for efficiently recovering oil from water through an adsorption-extrusion desorption method, can be recycled, and has wide application prospect in the fields of adsorption and separation treatment of oil stains on the surface of a water body and the like. The preparation method of the low-density high-elasticity hydrophobic / oleophylic carbon sponge is simple, economical, convenient to operate and suitable for large-scale preparation.

Description

technical field [0001] The invention relates to a hydrophobic / lipophilic carbon sponge with low density and high elasticity, a preparation method and application thereof, and belongs to the technical field of functional material preparation. Background technique [0002] Porous carbon materials have been widely used in catalyst supports, supercapacitors, catalysts, adsorbents, and gas storage due to their high specific surface area, high porosity, good electrical and thermal conductivity, and tunable pore size and surface properties. At present, the types of precursors for preparing porous carbon materials in this field are diversified, and the cost is relatively low. Among them, melamine-derived carbon sponge has the advantages of low cost, convenient operation, low density and high elasticity. However, melamine-derived carbon sponge is a water-oil amphiphilic material, which limits its application in oil-water separation. [0003] Therefore, providing a hydrophobic / lipop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/28C02F1/40B01J20/30
CPCB01J20/20C02F1/283C02F1/40
Inventor 刘军枫罗健辉徐宇恒金晶
Owner PETROCHINA CO LTD
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