In this work, a new type of solid amine sorbent was developed for low concentration CO₂ capture at ambient temperature. Polyacrylonitrile(PAN)-poly(methyl methacrylate)(PMMA) porous hollow fibers were firstly prepared by a wet-spinning process. Tetraethylenepentamine(TEPA) was then grafted onto the porous structure of the hollow fibers. The amine modified hollow fibers denoted as TEPA@PAN-PMMA were characterized by the Fourier transform infrared spectroscopy (FT-IR), thermo-gravimetric analysis(TGA), Brunauer-Emmett-Teller(BET), and scanning electron microscopy(SEM) methods. Performance of the TEPA@PAN-PMMA for CO₂ capture was evaluated by passing a 0.3% CO₂-N₂ gas mixture through the porous matrix of the hollow fibers at ambient temperature. The highest CO₂ adsorption capacity reached up to 1.50 mmol g⁻¹ for dry feed, and 3.00 mmol g⁻¹ for wet feed, respectively. Cyclic CO₂ adsorption-desorption test indicated that the TEPA@PAN-PMMA sorbents are stable and regenerable.

在这项工作中，开发了一种新型固体胺吸附剂，用于在环境温度下捕获低浓度 CO ₂。聚丙烯腈(PAN)-聚(甲基丙烯酸甲酯)(PMMA)多孔中空纤维首先采用湿法纺丝工艺制备。然后将四亚乙基五胺（TEPA）接枝到中空纤维的多孔结构上。通过傅里叶变换红外光谱（FT-IR）、热重分析（TGA）、Brunauer-Emmett-Teller（BET）和扫描电子显微镜（SEM）对胺改性的中空纤维TEPA@PAN-PMMA进行表征方法。TEPA@PAN-PMMA捕获CO _{2 的}性能通过通过 0.3% CO ₂ -N ₂气体混合物在环境温度下通过中空纤维的多孔基体。干饲料的最高CO ₂吸附容量分别达到1.50 mmol g ^-1和湿饲料的3.00 mmol g ^-1。循环CO ₂吸附-解吸试验表明TEPA@PAN-PMMA吸附剂稳定且可再生。