Adsorbent suitable for ultra-low-concentration carbon dioxide capture and formed through hot flat plate vulcanization phase separation and preparation and application of adsorbent

The adsorbent prepared by thermal flat plate vulcanized phase separation technology solves the problems of insufficient selectivity and low adsorption capacity of ultra-low concentration carbon dioxide capture in the prior art, achieves high-efficiency and low energy consumption carbon dioxide capture, and maintains good performance in a high-humidity environment.

CN119657099AActive Publication Date: 2025-03-21ZHEJIANG UNIV
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Patent Information

Application Number
CN202510067857.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2025-03-21
Estimated Expiration
2045-01-16

AI Technical Summary

Technical Problem

The prior art has problems such as insufficient selectivity, low adsorption capacity, high energy consumption and poor humidity resistance in ultra-low concentration carbon dioxide capture concentrations.

Method used

The adsorbent is prepared by hot plate vulcanizing phase separation technology. The adsorbent is prepared by preheating the diluent, adding inert carrier and active adsorption components to form a cast film liquid, and the sulfurized plate is heat-pressed on the vulcanized plate, and finally ion exchange treatment is performed in the carbonate solution to obtain an adsorbent with high porosity and adsorption capacity.

Benefits of technology

It significantly improves the kinetic performance, adsorption capacity and porosity of the adsorbent, improves the capture efficiency of ultra-low concentrations of carbon dioxide, and maintains good adsorption performance in high humidity environments.

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Abstract

The invention discloses an adsorbent suitable for ultra-low-concentration carbon dioxide capture and formed through hot plate vulcanization phase separation and a preparation method and application of the adsorbent. The preparation method comprises the following steps: preheating the diluent, adding the inert carrier, dissolving to form a uniform solution, then adding the active adsorption component, and uniformly mixing to form a membrane casting solution; and placing the membrane casting solution on a vulcanizing flat plate, performing hot pressing, then taking out the membrane casting solution, placing the membrane casting solution in a cooling bath for cooling and shaping, soaking the obtained membrane in an extracting agent to remove the diluent, and finally soaking the membrane in a carbonate solution until ion exchange is completed to obtain the adsorbent. The adsorbent can be used for directly trapping carbon dioxide in air.
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