采用基于辐射接枝程序的聚丙烯腈纳米纤维在固定床吸附柱中进行有效的 CO 捕获。

Effective CO capture by using poly (acrylonitrile) nanofibers based on the radiation grafting procedure in fixed-bed adsorption column.

机构信息

Faculty of Chemical, Gas and Petroleum Engineering, Semnan University, P.O. Box 35195-363, Semnan, Islamic Republic of Iran.

Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-8486, Tehran, Islamic Republic of Iran.

出版信息

Sci Rep. 2023 Apr 15;13(1):6173. doi: 10.1038/s41598-023-33036-y.

DOI:10.1038/s41598-023-33036-y

PMID:37061577

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10105707/

Abstract

In this study, a new adsorbent was investigated for CO adsorption in the fixed-bed column. Poly (acrylonitrile) nanofibers were prepared by electrospinning, then grafting under gamma irradiation with glycidyl methacrylate (GMA). Then, the nanofibers were modified with ethanolamine (EA), diethylamine (DEA) and triethylamine (TEA) to adsorb carbon dioxide molecules. Dynamic adsorption experiments were performed with a mixture of CH, CO in a constant bed column at ambient pressure and temperature and CO feed concentration (5%). The maximum adsorption capacity is 2.84 mmol/g for samples with 172.26% degree of grafting (DG) in 10 kGy. Also, the degree of amination with ethanolamine was achieved equal to 170.83%. In addition, the reduction of the regeneration temperature and the stability of this adsorbent after four cycles indicated the high performance of this adsorbent for CO adsorption.

摘要

在这项研究中，考察了一种新型吸附剂在固定床柱中对 CO 的吸附性能。通过静电纺丝制备了聚丙烯腈纳米纤维，然后在γ辐照下用甲基丙烯酸缩水甘油酯（GMA）接枝。然后，用乙醇胺（EA）、二乙胺（DEA）和三乙胺（TEA）对纳米纤维进行修饰，以吸附二氧化碳分子。在环境压力和温度以及 CO 进料浓度（5%）下，在恒床柱中用 CH、CO 混合物进行了动态吸附实验。在 10 kGy 下接枝度为 172.26%的样品的最大吸附容量为 2.84 mmol/g。此外，乙醇胺的胺化度达到了 170.83%。此外，再生温度的降低和四次循环后吸附剂的稳定性表明，这种吸附剂对 CO 的吸附性能很高。