Study of CO2 Sorption Kinetics on Electrospun Polyacrylonitrile-Based Carbon Nanofibers,Chemical Engineering & Technology

当前位置： X-MOL 学术 › Chem. Eng. Technol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Study of CO2 Sorption Kinetics on Electrospun Polyacrylonitrile-Based Carbon Nanofibers
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-04-12 , DOI: 10.1002/ceat.202000463
Ansgar Kretzschmar _{1,

2} , Victor Selmert _{1,

2} , Henning Weinrich ₁ , Hans Kungl ₁ , Hermann Tempel ₁ , Rüdiger-A. Eichel _{1,

2}

Affiliation

Electrospun carbon nanofibers (CNFs) exhibit a decent CO₂ sorption capacity and outstanding CO₂/N₂ selectivity. In this work, the sorption rate as another practically relevant parameter for CO₂ adsorption is analyzed for different carbonization temperatures. Equilibration curves obtained from different CO₂ sorption isotherms are discussed qualitatively and quantitatively, employing empirical models for pseudo-first- and second-order reactions. The sorption rate constants are found to be highly dependent on the carbonization temperature of the CNFs and the applied pressure during the measurement. Furthermore, two distinct processes of sorption are observed, which are attributed to different sorption sites on the surface and the inner volume of the CNFs.

中文翻译：

电纺聚丙烯腈基碳纳米纤维的CO2吸附动力学研究

电纺碳纳米纤维 (CNF) 具有良好的 CO ₂吸附能力和出色的 CO ₂ /N ₂选择性。在这项工作中，对于不同的碳化温度，对作为 CO ₂吸附的另一个实际相关参数的吸附速率进行了分析。从不同的 CO ₂获得的平衡曲线对吸附等温线进行定性和定量讨论，采用伪一级和二级反应的经验模型。发现吸附速率常数高度依赖于 CNF 的碳化温度和测量过程中施加的压力。此外，观察到两种不同的吸附过程，这归因于 CNF 表面和内部体积的不同吸附位点。

更新日期：2021-06-18

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11