Li Peiyuan, Ge Bingqing, Zhang Sujuan, Chen Shuixia, Zhang Qikun, Zhao Yongning
PCFM Lab, OFCM Institute, School of Chemistry and Chemical Engineering, Guangzhou 510275, PR China.
Langmuir. 2008 Jun 1;24(13):6567-74. doi: 10.1021/la800791s. Epub 2008 May 29.
This work focuses on developing a novel adsorbent for CO2 capture, by coating polyethylenimine (PEI) on glass fiber matrix and using epichlorohydrin (ECH) as cross-linking agent. The physicochemical properties of the fibrous adsorbent were characterized. The CO2 adsorption capacity was evaluated. Factors that affect the adsorption capacity of the fibrous adsorbent were studied. The experimental results show that this fibrous PEI adsorbent exhibits a much higher adsorption capacity for CO2 compared with another PEI fiber prepared in our previous work, which employed epoxy resin as the cross-linking agent. A CO2 adsorption capacity as high as 4.12 mmol CO2/g of adsorbent was obtained for this fibrous PEI adsorbent at 30 degrees C, equal to 13.56 mmol CO2/g of PEI, with a PEI/ECH ratio of 20:1. The adsorbent can be completely regenerated at 120 degrees C.
这项工作聚焦于开发一种用于捕获二氧化碳的新型吸附剂，方法是将聚乙烯亚胺（PEI）涂覆在玻璃纤维基质上，并使用环氧氯丙烷（ECH）作为交联剂。对纤维状吸附剂的物理化学性质进行了表征。评估了二氧化碳吸附容量。研究了影响纤维状吸附剂吸附容量的因素。实验结果表明，与我们之前工作中使用环氧树脂作为交联剂制备的另一种PEI纤维相比，这种纤维状PEI吸附剂对二氧化碳表现出更高的吸附容量。在30摄氏度下，这种纤维状PEI吸附剂的二氧化碳吸附容量高达4.12 mmol二氧化碳/克吸附剂，相当于13.56 mmol二氧化碳/克PEI，PEI/ECH比例为20:1。该吸附剂在120摄氏度下可完全再生。
