一种固态胺吸附剂的制备方法、固态胺吸附剂及其在超低压CO2吸附中的应用
By preparing solid amine adsorbents, the problems of high cost, difficult regeneration, and difficulty in low-pressure CO2 adsorption of existing adsorbents have been solved, achieving efficient and low-cost CO2 adsorption and separation, especially exhibiting excellent CO2 adsorption performance and stability under ultra-low pressure conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU UNIV OF SCI & TECH
- Filing Date
- 2024-05-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing adsorbents are costly and difficult to regenerate, making it difficult to achieve low-pressure CO2 adsorption and capture, especially under ultra-low pressure conditions. Furthermore, the process of liquid amine absorbing CO2 is energy-intensive and highly corrosive.
A solid amine adsorbent was prepared by mixing silicon powder with NaOH solution to obtain sodium silicate solution, then mixing it with polyvinylpyrrolidone solution, treating it in a high-temperature and high-pressure autoclave, calcining it, and impregnating it with tetraethylenepentamine solution to obtain the solid amine adsorbent.
The prepared solid amine adsorbent has a high CO2 adsorption capacity under ultra-low pressure, reaching 1.50 mmol g-1 at 0.01 bar, which is 6.8 times higher than the adsorption capacity. It also has good thermal stability and regeneration ability, making it suitable for high-temperature adsorption-desorption processes. It is low in cost and environmentally friendly.
Smart Images
Figure CN118341399B_ABST