Capture of CO2 from flue gas via multiwalled carbon nanotubes

Fengsheng Su, Chungsying Lu*, Wenfa Cnen, Hsun-Ling Bai, Jyh Feng Hwang

*此作品的通信作者

研究成果: Article同行評審

281 引文 斯高帕斯(Scopus)

摘要

Carbon nanotubes (CNTs) were modified by 3-aminopropyl-triethoxysilane (APTS) solution and were tested for its CO2 adsorption potential at multiple temperatures (20-100 °C). The physicochemical properties of CNTs were changed after the modification, which makes CNTs adsorb more CO2 gases. The adsorption capacities of CO2 via CNTs and CNTs(APTS) decreased with temperature indicating the exothermic nature of adsorption process and increased with water content in air at 0-7%. The mechanism of CO2 adsorption on CNTs and CNTs(APTS) appears mainly attributable to physical force regardless of temperature change, which makes regeneration of spent CNTs at a relatively low temperature become feasible. The CNTs(APTS) have good adsorption performance of CO2 at 20 °C as compared to many types of modified carbon or silica adsorbents documented in the literature. This suggests that the CNTs(APTS) are promising low-temperature adsorbents for CO2 capture from flue gas.

原文English
頁(從 - 到)3017-3023
頁數7
期刊Science of the Total Environment
407
發行號8
DOIs
出版狀態Published - 1 4月 2009

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