Preparation and application of composite hydrophobic modified activated carbon for treating chlorine-containing VOCs (Volatile Organic Compounds)

By modifying ammonia aqueous solution on the surface of activated carbon and loading porous hydrophobic polymer PDVB, the problem of insufficient adsorption of activated carbon under high humidity conditions is solved, and an efficient and economical adsorption effect is achieved.

CN119455916AActive Publication Date: 2025-02-18DALIAN UNIV OF TECH +1
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Patent Information

Application Number
CN202411733835.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-02-18
Estimated Expiration
2044-11-29

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Abstract

The invention belongs to the field of activated carbon material modification, and particularly relates to preparation and application of composite hydrophobic modified activated carbon for treating chlorine-containing VOCs (Volatile Organic Compounds). The method comprises the following steps: pre-treating activated carbon, then carrying out alkali solution dipping treatment on the pre-treated activated carbon by using ammonia water solutions with different concentrations to obtain alkali solution modified activated carbon, and finally loading a porous hydrophobic polymer on the surface of a pore channel of the activated carbon by a solution dipping method. The alkaline solution and the hydrophobic polymer composite hydrophobic modified activated carbon are obtained. The modification effect is good. When the relative humidity is 80%, compared with unmodified activated carbon, the adsorption penetration time of the composite hydrophobic modified activated carbon on dichloromethane is prolonged by 20.69%, the saturated adsorption capacity is 44.43 mg / g and is improved by 37.68%, and after the activated carbon is subjected to composite hydrophobic modification, the adsorption performance of the activated carbon on chlorine-containing VOCs in a high-humidity environment is obviously improved.
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Citation Information

Patent Citations

  • Preparation method of super-hydrophobic active carbon modified material

    CN102989414A

  • Method for preparing active carbon

    CN108751194A

  • Hydrophobic activated carbon for adsorbing chlorine-containing VOCs (Volatile Organic Compounds) and preparation method thereof

    CN116020415A

  • Super-hydrophobic activated carbon material as well as preparation method and application thereof

    CN116081623A

  • Preparation method of rare earth element modified resin for dichloromethane adsorption

    CN117504831A

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