Preparation method of biomass oil absorption carbon aerogel

A carbon aerogel and biomass technology, which is applied in separation methods, chemical instruments and methods, grease/oily substances/floating matter removal devices, etc. Cumbersome and complicated problems, to avoid seasonal effects, wide application range, and improve the oil absorption recovery rate

Inactive Publication Date: 2019-04-16
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these three-dimensional porous oil-absorbing materials have good oil-absorbing capacity, their synthetic raw materials are expensive, and the preparation process is cumbersome and complicated. It is difficult to achieve industrial mass production, and the industrialization prospect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Cut biomass waste pomelo peel into 3.5×2.5×1.5cm 3 Put the cuboid into a polytetrafluoroethylene-lined hydrothermal reactor, react at 180°C for 10 hours, and cool to room temperature to obtain a black carbonaceous aerogel;

[0025] Wash the obtained black carbonaceous airgel three times with 200mL of deionized water, then wash three times with 200mL of absolute ethanol, add 40mL of deionized water as a solvent, carry out vacuum freeze-drying, and vacuum-dry at -80°C 36h, obtain biomass carbon aerogel;

[0026] Add the mass ratio of polydimethylsiloxane, curing agent (polymethylhydrogensiloxane cross-linking agent and metal platinum catalyst according to mass ratio 10:1 combination) and n-hexane in the biomass carbon airgel obtained It is a modified solution of 10:1:15. After soaking for 1min, take it out and let it stand at room temperature for 10h, and solidify at 120°C for 2h to obtain biomass oil-absorbing carbon airgel.

[0027] The present invention tests the bio...

Embodiment 2

[0029] Cut biomass waste pomelo peel into 3.5×2.5×1.5cm 3Put the cuboid into a polytetrafluoroethylene-lined hydrothermal reactor, react at 200°C for 10 hours, and cool to room temperature to obtain a black carbonaceous aerogel;

[0030] Wash the obtained black carbonaceous airgel three times with 200mL of deionized water, then wash three times with 200mL of absolute ethanol, add 40mL of deionized water as a solvent, carry out vacuum freeze-drying, and vacuum-dry at -80°C 30h, obtain biomass carbon aerogel;

[0031] Add the mass ratio of polydimethylsiloxane, curing agent (polymethylhydrogensiloxane cross-linking agent and metal platinum catalyst according to mass ratio 10:1 combination) and n-hexane in the biomass carbon airgel obtained It is a modified solution of 10:1:20. After soaking for 1min, take it out and let it stand at room temperature for 10h, and solidify at 120°C for 2h to obtain biomass oil-absorbing carbon airgel.

[0032] The present invention tests the biom...

Embodiment 3

[0034] Cut biomass waste pomelo peel into 3.5×2.5×1.5cm 3 Put the cuboid into a polytetrafluoroethylene-lined hydrothermal reactor, react at 160°C for 10 hours, and cool to room temperature to obtain a black carbonaceous aerogel;

[0035] Wash the obtained black carbonaceous airgel three times with 200mL of deionized water, then wash three times with 200mL of absolute ethanol, add 40mL of deionized water as a solvent, carry out vacuum freeze-drying, and vacuum-dry at -80°C 24h, obtain biomass carbon aerogel;

[0036] Add the mass ratio of polydimethylsiloxane, curing agent (polymethylhydrogensiloxane cross-linking agent and metal platinum catalyst according to mass ratio 10:1 combination) and n-hexane in the biomass carbon airgel obtained It is a modified solution of 10:1:25. After soaking for 1min, take it out and let it stand at room temperature for 12h, and solidify at 120°C for 2h to obtain biomass oil-absorbing carbon airgel.

[0037] The present invention tests the bio...

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Abstract

The invention discloses a preparation method of biomass oil absorption carbon aerogel. The preparation method includes the following steps that a, biomass raw materials are cut to be in an appropriateshape, put into a hydrothermal reaction kettle for a hydrothermal reaction, and cooled to have room temperature, so that black carbon aerogel is obtained; b, the obtained black carbon aerogel in thestep a is washed and dried to obtain biomass carbon aerogel; c, polydimethylsiloxane and a solidifying agent are dissolved in n-hexane to prepare a modifying solution, wherein the mass ratio of polydimethylsiloxane to the solidifying agent to n-hexane is 10:1:15-25, the solidifying agent comprises a polydimethylsiloxane crosslinking agent, the biomass carbon aerogel is put into the modifying solution to be soaked for 1-2 min and then taken out to stand for 10-12 h at room temperature, and then the biomass oil absorption carbon aerogel is obtained through solidification at the temperature of 100-120 DEG C. The preparation method has the advantages of being low in cost, wide in application range and suitable for industrialized production, and saving energy, and the prepared carbon aerogel has a high oil absorption rate and a high oil absorption recovery rate.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and mainly relates to a preparation method of biomass oil-absorbing carbon airgel. technical background [0002] With the advancement of science and technology and the development of industry, the oil pollution caused by marine oil spill incidents and the discharge of oily wastewater has caused huge damage to the earth's environment and affected the survival and development of the earth's organisms. Therefore, there is an urgent need to develop a large number of excellent oil-absorbing materials. At present, oil-absorbing materials are mainly divided into two categories: inorganic oil-absorbing materials and organic oil-absorbing materials. Organic oil-absorbing materials can be divided into natural organic oil-absorbing materials and synthetic organic oil-absorbing materials. Inorganic oil-absorbing materials include silica, clay, etc., which have low oil-absorbing capacity and poor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/40
CPCB01J20/24B01J20/28047C02F1/40
Inventor 钱雨昆梁晓康金炜沈江南
Owner ZHEJIANG UNIV OF TECH
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