低碳化学与化工2024，Vol.49Issue(11)：104-112,9.DOI:10.12434/j.issn.2097-2547.20230373
季铵基吸附剂CO2变湿捕集-释放机制及相关材料研究进展
Research progress on CO2 moisture swing capture-release mechanism of quaternary ammonium-based adsorbents and related materials
摘要
Abstract
As a new type of CO2 capture technology,moisture swing adsorption has the characteristics of capture-release CO2 driven by moisture change,which can effectively reduce the energy consumption and operation cost of CO2 capture.The mechanism of moisture swing adsorption technology of quaternary ammonium-based adsorbents and the mechanism of action from the perspective of thermodynamics and kinetics were described.The influencing factors of adsorbents performance were introduced.The synthesis and modification methods and research progress of adsorbents in recent years were summarized.Finally,the current challenges in this field were summarized and the development trend was pointed out.The process of CO2 adsorption by quaternary ammonium-based adsorbents is driven by water evaporation and affected by moisture fluctuation.When the adsorbents are loaded with divalent and trivalent acid anions,the hydrophilic/hydrophobic layer spacing and cation spacing are small,and the CO2 adsorption performance is strong.The adsorbent materials with smaller particle size,richer porosity and higher specific surface area can be prepared by directional regulation of pore structure.In addition,the quaternary ammonium functional groups are chemically grafted by enhanced quaternization or biquaternization to enhance the density of active sites and efficient utilization.Moisture swing adsorption technology is currently in the development stage.On the basis of maintaining a high specific surface area and functional group utilization,improving the adsorption capacity and cycle rate is an inevitable demand for practical applications.Its large-scale application,reducing capture energy consumption,improving environmental tolerance,and the treatment of CO2 after capture are also the key directions to be studied.关键词
CO2捕集/变湿吸附剂/季铵基/动力学/热力学Key words
CO2 capture/moisture swing adsorbents/quaternary ammonium-based/kinetics/thermodynamics分类
化学化工引用本文复制引用
高云芳,宋新山..季铵基吸附剂CO2变湿捕集-释放机制及相关材料研究进展[J].低碳化学与化工,2024,49(11):104-112,9.基金项目
国家自然科学基金(52170152) （52170152）
上海市科技攻关项目(21DZ1202402). （21DZ1202402）
