Tao Yihui, Dong Yong
National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China.
ACS Omega. 2025 Aug 5;10(32):36164-36177. doi: 10.1021/acsomega.5c03782. eCollection 2025 Aug 19.
Solid amine adsorbents have demonstrated considerable potential for application in carbon capture systems within postcombustion technologies. The performance of the adsorbent was significantly affected by both the type of support material and the organic amine utilized. The purpose of this study is to examine how the compatibility between organic amines and different porous materials (resins) affects CO capture performance. Triethylenetetramine (TETA)-functionalized solid adsorbents are widely used in CO capture and separation due to their excellent adsorption capacity, recyclability, and scalability. In this study, four resinsADS-17, XAD, DA201D, and AB-8are selected as support to examine the effect of the interaction between TETA and these four resins on CO adsorption performance. Through studies on adsorption performance, thermogravimetric analysis, kinetics, activation energy, and diffusion mechanisms, it was determined that the adsorption process involves a synergistic combination of physical and chemical adsorption, with the rate-limiting step being film diffusion. TETA-XAD and TETA-DA201D demonstrate higher adsorption rates and superior performance than the other two adsorbents. This work offers fresh insights and potential directions for exploring the compatibility mechanisms between organic amines and porous solids.
固体胺吸附剂在燃烧后技术的碳捕获系统中已展现出可观的应用潜力。吸附剂的性能受到载体材料类型和所使用的有机胺的显著影响。本研究的目的是考察有机胺与不同多孔材料(树脂)之间的相容性如何影响CO捕获性能。三亚乙基四胺(TETA)功能化的固体吸附剂因其出色的吸附容量、可回收性和可扩展性而广泛用于CO捕获和分离。在本研究中,选择了四种树脂——ADS - 17、XAD、DA201D和AB - 8——作为载体,以考察TETA与这四种树脂之间的相互作用对CO吸附性能的影响。通过对吸附性能、热重分析、动力学、活化能和扩散机制的研究,确定吸附过程涉及物理吸附和化学吸附的协同组合,限速步骤为膜扩散。TETA - XAD和TETA - DA201D表现出比其他两种吸附剂更高的吸附速率和更优异的性能。这项工作为探索有机胺与多孔固体之间的相容机制提供了新的见解和潜在方向。