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A kind of organosilicon-activated carbon modified composite material and preparation method thereof

A composite material and activated carbon technology, applied in the field of environmental engineering, can solve the problem that the effect of hydrothermal stability is not embodied, and achieve the effect of enhanced adsorption capacity and improved ignition point.

Active Publication Date: 2022-05-10
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent application number is 201810682240.2, and the name is "a kind of alumina-activated carbon composite material and its preparation method". Although the mesoporous material alumina is used to modify the activated carbon, it only broadens the types of VOCs adsorption. The saturated adsorption capacity of activated carbon has not increased, and the effect of hydrothermal stability has not been specifically reflected.

Method used

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  • A kind of organosilicon-activated carbon modified composite material and preparation method thereof
  • A kind of organosilicon-activated carbon modified composite material and preparation method thereof
  • A kind of organosilicon-activated carbon modified composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the organosilicon-activated carbon modified composite material that the silicon-carbon ratio is 0.05, the steps are as follows:

[0028] (1) Roll 3g of granular or block activated carbon into 6-mesh powder to obtain product A;

[0029] (2) Add 1.5 g of tetrapropylammonium hydroxide and 20 ml of deionized water to product A, mix well, and process ultrasonically for 30 minutes in an ultrasonic cleaner to obtain product B;

[0030] (3) Add product B to 2 g of ethyl orthosilicate, and stir at 80°C for 3 hours to obtain product C;

[0031] (4) Pour product C into a hydrothermal reaction kettle, place it in a vacuum-tight desorption box at 180°C for 48 hours to obtain product D;

[0032] (5) Product D was centrifuged and washed several times, and the upper suspension was removed until the pH of the lower layer of sediment returned to neutral to obtain product E;

[0033] (6) Dry product E at 80°C for 12 hours to obtain product F;

[0034] (7) Rais...

Embodiment 2

[0036] The preparation method of the organosilicon-activated carbon modified composite material that the silicon-carbon ratio is 0.1, the steps are as follows:

[0037] (1) Roll 3g of granular or block activated carbon into 6-mesh powder to obtain product A;

[0038] (2) Add product A to 3 g of tetrapropylammonium hydroxide and 40 ml of deionized water, mix well, and process ultrasonically for 30 minutes in an ultrasonic cleaner to obtain product B;

[0039] (3) Add product B to 4 g of ethyl orthosilicate, and stir at 80°C for 3 hours to obtain product C;

[0040] (4) Pour product C into a hydrothermal reaction kettle, place it in a vacuum-tight desorption box at 180°C for 48 hours to obtain product D;

[0041] (5) Product D was centrifuged and washed several times, and the upper suspension was removed until the pH of the lower layer of sediment returned to neutral to obtain product E;

[0042] (6) Dry product E at 80°C for 12 hours to obtain product F;

[0043] (7) Raise p...

Embodiment 3

[0045] The preparation method of the organosilicon-activated carbon modified composite material that the silicon-carbon ratio is 0.3, the steps are as follows:

[0046] (1) Roll 3g of granular or block activated carbon into 6-mesh powder to obtain product A;

[0047] (2) Add 4.5 g of tetrapropylammonium hydroxide and 120 ml of deionized water to product A, mix well, and process ultrasonically for 30 minutes in an ultrasonic cleaner to obtain product B;

[0048] (3) Add product B to 12 g of ethyl orthosilicate, and stir at 80°C for 3 hours to obtain product C;

[0049] (4) Pour product C into a hydrothermal reaction kettle, place it in a vacuum-tight desorption box at 180°C for 48 hours to obtain product D;

[0050] (5) Product D was centrifuged and washed several times, and the upper suspension was removed until the pH of the lower layer of sediment returned to neutral to obtain product E;

[0051] (6) Dry product E at 80°C for 12 hours to obtain product F;

[0052] (7) Rai...

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Abstract

The invention discloses an organosilicon-activated carbon modified composite material and a preparation method thereof, comprising: (1) rolling the original granular activated carbon into powder; (2) adding the above-mentioned powdered activated carbon to tetrapropyl hydroxide Ammonium and deionized water are ultrasonically treated in an ultrasonic cleaning machine; (3) the above-mentioned obtained solution is added to tetraethyl orthosilicate and stirred; (4) the above-mentioned obtained solution is poured into a hydrothermal reaction kettle for reaction; (5) the above-mentioned The modified carbon suspension is repeatedly centrifuged and washed until the pH of the suspension returns to neutral; (6) drying the above-mentioned precipitate; (7) carbonizing and reactivating the obtained modified carbon powder to obtain Silicone-activated carbon modified composites. The ignition point of the silicon-carbon modified material prepared by the invention is improved, and the saturated adsorption capacity of VOCs is also improved, which expands the adsorption and desorption safety of activated carbon under high temperature and high oxygen conditions.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to an organosilicon-activated carbon modified composite material and a preparation method thereof. Background technique [0002] In the field of environmental engineering, the adsorption method is widely used in the emission of industrial waste gas. The adsorption method has many advantages that are difficult to match by other methods: high purification efficiency, low operating cost, wide application range, mature existing treatment process, and convenient operation. The key to adsorption and purification of waste gas by adsorption method is the adsorbent, in addition to the composition of the waste gas and the emission conditions. High-efficiency adsorbents usually have the following characteristics: large specific surface area, good pore structure characteristics, large adsorption capacity, high desorption efficiency, and strong mechanical strength. [0003] At present,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/28011B01D53/04B01D2257/708B01D2253/102
Inventor 王金洋吴曾付名利李怡辰梅振显王银涛吴思聪
Owner SOUTH CHINA UNIV OF TECH