Study on CO2 Adsorption Characteristics of DETA Functionalized Porous Particles
To achieve green and efficient carbon capture,this study synthesized porous particles from production waste and functionalized them with diethylenetriamine(DETA)to improve their CO2 adsorption performance.The novel adsorbent was characterized by low-temperature nitrogen adsorption desorption and Fourier transform infrared spectroscopy,and its CO2 adsorption characteristics were tested using a fixed bed adsorption device.The results showed that the continuous loading of DETA did not damage the multi-level pore structure of the particles;The optimal DETA loading rate for porous particles is 25%,and the CO2 adsorption capacity is significantly improved compared to before functionalization.The CO2 adsorption capacity can reach 87.25 mg/g at room temperature and pressure.Infrared testing confirmed the generation of carbamate,adsorption kinetics showed the dominant position of chemical adsorption,and the adsorbent had good adsorption selectivity for CO2.This study contributes to promoting the comprehensive utilization of production waste and promoting the sustainable development of carbon capture processes.
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