Porous active material with high specific surface area and high adsorption capacity and preparation method thereof

By preparing spongy activated carbon and enhancing its adsorption performance, the problem of insufficient specific surface area and adsorption capacity of existing activated carbon materials is solved, and higher adsorption capacity and specific surface area are achieved, which is suitable for a variety of application scenarios.

CN119701872APending Publication Date: 2025-03-28淮北市大华环保科技有限公司
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Patent Information

Application Number
CN202411919965.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The specific surface area and adsorption capacity of existing activated carbon materials are insufficient, making it difficult to meet the needs of efficient adsorption.

Method used

Primary ash is prepared by calcining sawdust, coconut shell and other raw materials, and through the steps of pickling, alkali-soluble, activation, etc., combined with polyvinyl alcohol grafted polymer, soluble starch, dilute sulfuric acid, formaldehyde and other materials, sponge-like activated carbon is prepared, and its adsorption performance is enhanced by spraying nanosilver and hydroxyapatite.

Benefits of technology

It significantly improves the specific surface area and adsorption capacity of porous active materials, enhances the strength and multi-stage adsorption performance of the materials, and is suitable for use in wastewater treatment, formaldehyde adsorption and refrigerator deodorization.

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Abstract

The invention relates to the technical field of porous active carbon, and discloses a porous active material with high specific surface area and high adsorption capacity and a preparation method thereof. According to the process, the spongy activated carbon is prepared by collecting the self-stripping free carbon and foaming the free carbon with the polyvinyl alcohol grafted polymer, the soluble starch, the dilute sulphuric acid and the formaldehyde, so that the higher specific surface area is obtained, the adsorption capacity is improved, and the finally prepared porous adsorption material is larger in adsorption capacity and specific surface area. The method is simple, operation is not complex, the method conforms to the national green economic development policy and policy, cost reduction of enterprises is facilitated, the prepared porous activated carbon has very excellent multi-stage adsorption capacity, the adsorption capacity of the material is improved, and meanwhile the strength of the porous activated carbon is improved.
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