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A kind of superhydrophobic composite carbon airgel oil-absorbing material and preparation method thereof

A technology of carbon airgel and oil-absorbing materials, applied in chemical instruments and methods, seawater treatment, other chemical processes, etc., can solve the problem of oil-absorbing materials not achieving superhydrophobic oil-water separation effect, insufficient stability and recycling rate, graphite To solve the problems of high price of ethylene, to achieve the effect of improving reusability, good oil-water separation effect, and fast adsorption speed

Active Publication Date: 2019-09-06
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 104998589 A provides a preparation method of high-efficiency oil-absorbing carbon airgel material. The graphene oxide-carbon nanotube dispersion is reduced by chemical hydrothermal reduction to obtain graphene-carbon nanotube hydrogel. However, the raw material graphene used is expensive, and the prepared oil-absorbing material does not achieve superhydrophobicity and good oil-water separation effect, and its stability and recycling Insufficient efficiency seriously restricts its large-scale application in the field of oil-water separation

Method used

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  • A kind of superhydrophobic composite carbon airgel oil-absorbing material and preparation method thereof
  • A kind of superhydrophobic composite carbon airgel oil-absorbing material and preparation method thereof
  • A kind of superhydrophobic composite carbon airgel oil-absorbing material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation steps of carbon airgel:

[0039] At room temperature, resorcinol and formaldehyde solution are configured into a mixed solution with a molar ratio of 1:5, and 10g of basic catalyst Na 2 CO 3 , deionized water as the reaction solvent, stirred evenly on a magnetic stirrer until a completely clear light yellow mixed sol, then poured the sol into the gel mold prepared in advance, sealed it with plastic wrap and placed it at room temperature to continue the reaction until After coagulation and gelation, take out the sample and put it into an oven for further gel aging. Set the temperature program at 40-70°C to gradually increase the temperature, and finally obtain an organic resorcinol-formaldehyde (RF) wet gel.

[0040] Soak the organic resorcinol-formaldehyde (RF) wet gel sample in an ethanol solvent and put it in an oven at a certain temperature. The oven temperature is 60°C. Replace it every 24 hours for 3 times to fully replace the gel. Moisture in the...

Embodiment 2

[0047] (1) Preparation steps of carbon airgel:

[0048] Under room temperature conditions, the catechol and formaldehyde solution are configured into a mixed solution with a molar ratio of 1:3, and 10g of basic catalyst Na 2 CO 3 , deionized water as the reaction solvent, stirred evenly on a magnetic stirrer until a completely clear light yellow mixed sol, then poured the sol into the gel mold prepared in advance, sealed it with plastic wrap and placed it at room temperature to continue the reaction until After coagulation and gelation, take out the sample and put it into an oven for further gel aging. Set the temperature program at 40-70°C to gradually increase the temperature, and finally obtain an organic resorcinol-formaldehyde (RF) wet gel.

[0049] Soak the organic resorcinol-formaldehyde (RF) wet gel sample in ethanol solvent and put it in an oven at a certain temperature. Moisture in the pores, the gel filled with ethanol in the pores can be obtained, using CO 2 Sup...

Embodiment 3

[0056] (1) Preparation steps of carbon airgel:

[0057] At room temperature, resorcinol and formaldehyde solution are configured into a mixed solution with a molar ratio of 1:5, and 10g of basic catalyst Na 2 CO 3 , deionized water as the reaction solvent, stirred evenly on a magnetic stirrer until a completely clear light yellow mixed sol, then poured the sol into the gel mold prepared in advance, sealed it with plastic wrap and placed it at room temperature to continue the reaction until After coagulation and gelation, take out the sample and put it into an oven for further gel aging. Set the temperature program at 40-70°C to gradually increase the temperature, and finally obtain an organic resorcinol-formaldehyde (RF) wet gel.

[0058] Soak the organic resorcinol-formaldehyde (RF) wet gel sample in an ethanol solvent and put it in an oven at a certain temperature. The oven temperature is 70°C. Replace it every 24 hours for 5 times to fully replace the gel. Moisture in the...

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Abstract

The invention discloses a superhydrophobic composite carbon aerogel oil absorbent material and a preparation method thereof. Composite carbon aerogel doped with a carbon nanotube is subjected to surface hydrophobic modification by using a polymer grafting method, and thereby a superhydrophobic state is achieved, a specific surface area and the mesoporous content of the material are increased, and the composite carbon aerogel is endowed with good mechanical properties, adsorption property and superhydrophobic property. The material has the characteristics of high adsorption capacity and high adsorption speed for organic solvents and oil, and has higher oil absorption capacity; oily organic matters in sewage can be effectively removed; in addition, the superhydrophobic composite carbon aerogel oil absorbent material can be collected by distilling or extruding; the superhydrophobic composite carbon aerogel oil absorbent material can be reused after being washed with ethanol and dried; after multiple extrusion experiments, the superhydrophobic composite carbon aerogel oil absorbent material still can be restored to an original shape, and has a wide application prospect in the field of oil and gas field.

Description

technical field [0001] The invention relates to the field of preparation of environmental functional material nanomaterials, in particular to a hydrophobic lipophilic superhydrophobic composite carbon airgel oil-absorbing material and a preparation method thereof. Background technique [0002] With the rapid development of economy and society, people's demand for petroleum and petroleum products has increased dramatically. Crude oil needs to go through multiple storage, transportation, loading and unloading processes in the process from mining, refining, and finally to the consumer market in the form of refined oil, which will inevitably cause volatilization loss or even leakage of oil products, resulting in energy waste and poor oil quality. decline, environmental pollution and even safety hazards. The leakage of crude oil and the random discharge of industrial organic solvents lead to more and more serious water pollution, which poses a serious threat to the marine ecolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/20B01J20/28C02F1/28C02F103/08
Inventor 张晶伊希斌范会利刘本学琚伟王启春沈晓冬
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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