Preparation method of activated carbon fiber loaded with polystyrene

By using activated carbon fibers loaded with polystyrene, the problem of low impurity removal efficiency of activated carbon is solved, achieving efficient adsorption of organic impurities, reducing costs and waste carbon generation, and making it suitable for industrial impurity removal in acesulfame potassium water.

CN122298350APending Publication Date: 2026-06-30NANTONG ACETIC ACID CHEM +1
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Patent Information

Application Number
CN202411996584.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing activated carbon has low impurity removal efficiency in the synthesis of acesulfame potassium, generates a large amount of waste carbon and has high cost, and its uneven pore size distribution leads to poor impurity adsorption effect.

Method used

By loading polystyrene-based activated carbon fibers and utilizing functionalized polystyrene microspheres to form a specific pore size range on ACF, combined with the impregnation method to prepare supported ACF, the adsorption efficiency of organic impurities in acesulfame potassium water is improved.

Benefits of technology

It achieves efficient adsorption of organic impurities, reduces production costs, decreases waste carbon generation, and improves the quality of sugar water, making it suitable for continuous industrial production.

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Abstract

The invention discloses a preparation method of polystyrene-loaded activated carbon fiber, styrene and acrylic acid are used as raw materials, potassium persulfate (KPS) is used as an initiator, polyvinylpyrrolidone (PVP) is used as a coupling agent, activated carbon fiber (ACF) is used as a load, and the polystyrene-loaded activated carbon fiber is prepared by adopting an in-situ loading method, and the preparation method comprises the following specific steps: (1) fully washing ACF with deionized water, removing surface impurities, and drying; (2) slowly dropwise adding quantitative styrene and acrylic acid into a base solution (PVP, sodium bicarbonate and water) in a nitrogen atmosphere at room temperature, injecting a KPS aqueous solution at a certain speed, continuously keeping stirring for reaction after addition, and filtering to obtain a polystyrene emulsion; and (3) impregnating the active carbon fiber with the obtained emulsion, and drying after full impregnation to obtain the polystyrene-loaded active carbon fiber. The active carbon fiber material prepared by the method is low in cost, simple in process and good in adsorption effect, and can be used for improving the impurity removal effect of the acesulfame honey water.
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