Preparation method of hydrophobic activated carbon modified material

A modified material, activated carbon technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of reducing activated carbon adsorption activity, unfavorable recycling and regeneration, etc., to achieve stable performance, significant economic and technical effects, and mild conditions.

Active Publication Date: 2015-03-25
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

The preparation methods disclosed in these patent applications all require a high temperature activation or strong acid and strong alkali oxidation treatment to impart hydrophobic function to the activated carbon. However, high temperature activation or strong acid and strong alkali oxidation treatment will reduce the adsorption activity of activated carbon, and it is also not conducive to its recycling

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  • Preparation method of hydrophobic activated carbon modified material
  • Preparation method of hydrophobic activated carbon modified material

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Embodiment 1

[0019] A method for preparing a hydrophobic activated carbon modified material, using ethyl orthosilicate as an additive, cetyltrimethoxysilane as a modifier, and absolute ethanol as a solvent, liquid-phase impregnation and suction filtration of activated carbon , dried and obtained, the concrete realization steps are as follows:

[0020] 1) Immerse 5g of activated carbon in 100mL ethanol solution with a concentration of 0.3v% ethyl orthosilicate, stir magnetically for 2 hours at room temperature, and filter until apparent dryness;

[0021] 2) Dry the above filtered sample in a drying oven at 120°C for 6 hours;

[0022] 3) Immerse the above-mentioned dried activated carbon in 100mL ethanol solution of cetyltrimethoxysilane with a concentration of 5v%, ultrasonically vibrate for 2h at room temperature, soak and stand for 10h, and filter until apparent dryness;

[0023] 4) The above-mentioned suction-filtered sample was dried in an electric blast drying oven at 120°...

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Abstract

The invention relates to a preparation method of a hydrophobic activated carbon modified material. The hydrophobic activated carbon modified material is prepared by taking ethyl orthosilicate as an additive, hexadecyltrimethoxysilane as a modifier, and anhydrous ethanol as a solvent, and carrying out liquid-phase impregnation, suction filtration and drying on activated carbon. The preparation method provided by the invention has the advantages of being simple in process and mild in conditions, and the hydrophobic activated carbon modified material can be prepared under the condition of room temperature; and the modified activated carbon is good in hydrophobic effect, stable in property and good in repeatability, the hydrophobic property can be restored only by simply drying, especially the defects that porous activated carbon produces bacteria and mildews in a humidity environment and has reduced absorption capability for target pollutants due to moisture absorption are overcome, and economic and technical effects are remarkable.

Description

technical field [0001] The invention belongs to the preparation technology of activated carbon modified materials, in particular to a preparation method of hydrophobic activated carbon modified materials. Background technique [0002] Activated carbon adsorption is widely used in water treatment and air purification, but activated carbon is prone to bacteria and mold in high humidity environments, and the adsorption capacity will decrease due to moisture absorption, or even completely lose its adsorption performance. If the surface of activated carbon is treated to make it have hydrophobic properties, the adsorption capacity of activated carbon to target organic matter can be improved, and activated carbon has more application value. There have been related patent applications for the preparation of hydrophobic activated carbon, see: 201310223296.9 Chinese invention patent "a method for preparing superhydrophobic activated carbon"; 201310284996.9 Chinese invention patent; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/32B01J20/20
CPCB01J20/103B01J20/20B01J20/22B01J20/3204B01J2220/46B01J2220/4806B01J2220/4812
Inventor 袁志好赵凤霞
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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