CAJ | 학술논문

以三嵌段共聚物P123(EO20-PO70-EO20)为模板剂合成了介孔泡沫氧化硅(MCF)材料. MCF经过五乙烯六胺(PEHA)修饰后用于捕捉CO2.采用扫描电镜(SEM)、透射电镜(TEM)、N2吸附-脱附、傅里叶变换红外(FTIR)光谱、热重分析(TGA)对 MCF 和 MCF-PEHA 进行了表征.结果表明, PEHA 对 MCF 改性后,并没有破坏 MCF载体本身的结构. MCF-PEHA的CO2吸附量在75°C时达到最大.随着PEHA含量的增加, MCF-PEHA的CO2吸附量呈先增大后减小的趋势,当PEHA含量为70%(w)时, CO2吸附量达到最大,为3.55 mmol·g-1.水汽促进了吸附剂的CO2吸附性能.研究结果还表明, MCF-70吸附剂经过四次吸脱附循环,吸附性能基本保持不变,表现出很好的可再生性能.
이삼감단공취물P123(EO20-PO70-EO20)위모판제합성료개공포말양화규(MCF)재료. MCF경과오을희륙알(PEHA)수식후용우포착CO2.채용소묘전경(SEM)、투사전경(TEM)、N2흡부-탈부、부리협변환홍외(FTIR)광보、열중분석(TGA)대 MCF 화 MCF-PEHA 진행료표정.결과표명, PEHA 대 MCF 개성후,병몰유파배 MCF재체본신적결구. MCF-PEHA적CO2흡부량재75°C시체도최대.수착PEHA함량적증가, MCF-PEHA적CO2흡부량정선증대후감소적추세,당PEHA함량위70%(w)시, CO2흡부량체도최대,위3.55 mmol·g-1.수기촉진료흡부제적CO2흡부성능.연구결과환표명, MCF-70흡부제경과사차흡탈부순배,흡부성능기본보지불변,표현출흔호적가재생성능.
@@@@Mesocel ular silica foam (MCF) was prepared using P123 (EO20-PO70-E20) as template and then functionalized with pentaethylenehexamine (PEHA) for CO2 adsorption. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption isotherms, Fourier transform infrared (FTIR) spectroscopy and thermal gravimetric analysis (TGA). These results indicated that after modification with PEHA, the structure of the support itself was undamaged. The highest CO2 adsorption capacity of MCF-PEHA was obtained at 75 °C. With increasing PEHA loading, the CO2 adsorption capacity increases and approached the highest adsorption capacity (3.55 mmol·g-1) with a 70% (w) PEHA loading. Moisture improved the CO2 adsorption performance of the adsorbents. Repeated adsorption-desorption cycling indicated that the sorbents maintained stable CO2 adsorption capacity after 4 cycles, indicating potential for regeneration of the adsorbents.