Separation and capture of CO2 from ambient air using TEPA-functionalized PAN hollow fibers

吸附 聚丙烯腈 纤维 解吸 化学工程 材料科学 傅里叶变换红外光谱 朗缪尔吸附模型 胺气处理 扫描电子显微镜 化学 有机化学 复合材料 聚合物 工程类
作者
Jianxin Zhang,Shasha Guo,Shidi Wang,Xiaoyao Tan
出处
期刊:Separation and Purification Technology [Elsevier BV]
卷期号:324: 124635-124635 被引量:8
标识
DOI:10.1016/j.seppur.2023.124635
摘要

Solid amine sorbents have potential application in direct air capture of CO2 due to the advantages of low generation energy-demanding, and high adsorption capacity. Although the powdery solid amine sorbents exhibit high CO2 adsorption capacity, large pressure drop still limits their applicability. Structured solid amine are considered as good alternatives to solve this problem, but they still have the bottle-neck of insufficient CO2 adsorption capacity. To this end, we proposed solid amine hollow fiber to address these problems. In this work, tetraethylenepentamine (TEPA)-functionalized polyacrylonitrile (PAN) hollow fibers were fabricated via hydrolyzing nitrile groups on hollow fiber surface and then chemically grafting TEPA on it. The as-prepared PAN-TEPA hollow fiber was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET). In CO2 capture experiment, PAN-TEPA hollow fiber achieved high adsorption capacity under low CO2 concentration (5.07 mmol g−1, 5000 ppm, CO2-N2) source. The adsorption kinetics were studied, and Avrami fractional-order kinetics model fitted best with experimental curve. The adsorption capacities under low concentrations fitted well with Langmuir isotherm. Temperature-vacuum swing (TVS) desorption process was employed to rengenerate PAN-TEPA hollow fiber, and the regeneration conditions were screened. In direct air capture, PAN-TEPA hollow fibers had an adsorption capacity of 2.02 mmol g−1. CO2 Saturated PAN-TEPA hollow fibers could be efficiently regenerated by TVS desorption process. After 11 adsorption–desorption cyclic experiments, the decrease of breakthrough CO2 adsorption capacity is not obvious. Due to their characteristics in CO2 adsorption and desorption processes, PAN-TEPA hollow fiber is a potential sorbent for separation and capture of CO2 from ambient air.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
大模型应助强仔爱写文章采纳,获得10
1秒前
2秒前
2秒前
羊羊羊完成签到,获得积分10
5秒前
wwd完成签到,获得积分10
7秒前
7秒前
wangbq发布了新的文献求助20
7秒前
上官若男应助ycd采纳,获得20
12秒前
矢车菊完成签到 ,获得积分10
13秒前
可罗雀完成签到,获得积分10
17秒前
微笑可乐完成签到,获得积分10
20秒前
无花果应助kiki采纳,获得10
21秒前
vovoking完成签到 ,获得积分10
23秒前
Pawn完成签到,获得积分10
27秒前
Kun发布了新的文献求助50
27秒前
29秒前
无情耷完成签到,获得积分10
30秒前
云母完成签到 ,获得积分10
31秒前
33秒前
李春霞发布了新的文献求助10
34秒前
正直远望完成签到,获得积分10
37秒前
完美世界应助MILK采纳,获得10
38秒前
Kun发布了新的文献求助10
42秒前
HHHWJ完成签到 ,获得积分10
43秒前
45秒前
固的曼完成签到,获得积分10
45秒前
徐老师完成签到 ,获得积分10
48秒前
50秒前
MILK发布了新的文献求助10
51秒前
MAVS完成签到,获得积分10
52秒前
54秒前
科研通AI5应助chendi20082009采纳,获得10
57秒前
Kun发布了新的文献求助10
57秒前
58秒前
59秒前
59秒前
1分钟前
1分钟前
orixero应助凶狠的乐巧采纳,获得10
1分钟前
szong发布了新的文献求助10
1分钟前
高分求助中
【此为提示信息,请勿应助】请按要求发布求助,避免被关 20000
Encyclopedia of Geology (2nd Edition) 2000
Периодизация спортивной тренировки. Общая теория и её практическое применение 310
Mixing the elements of mass customisation 300
the MD Anderson Surgical Oncology Manual, Seventh Edition 300
Nucleophilic substitution in azasydnone-modified dinitroanisoles 300
Platinum-group elements : mineralogy, geology, recovery 260
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3780394
求助须知:如何正确求助?哪些是违规求助? 3325736
关于积分的说明 10224182
捐赠科研通 3040851
什么是DOI,文献DOI怎么找? 1669087
邀请新用户注册赠送积分活动 799013
科研通“疑难数据库(出版商)”最低求助积分说明 758649