吸附剂
氮气
化学工程
选择性
吸附
烟气
多孔性
化学
生物量(生态学)
材料科学
有机化学
催化作用
海洋学
地质学
工程类
作者
Jie Chen,Jie Yang,Gengshen Hu,Xin Hu,Zhiming Li,Siwei Shen,Maciej Radosz,Maohong Fan
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2016-01-07
卷期号:4 (3): 1439-1445
被引量:306
标识
DOI:10.1021/acssuschemeng.5b01425
摘要
Nitrogen-doped porous carbons obtained from coconut shell by urea modification and KOH activation are found to exhibit very high CO2 uptake at 1 bar, almost 5 mmol g–1 at 25 °C and over 7 mmol g–1 at 0 °C, respectively. The high CO2 uptake of the sorbent can be ascribed to its high microporosity and nitrogen content. In addition, these sorbents possess high CO2/N2 selectivity, stable cyclic ability, high initial heat of CO2 adsorption, fast adsorption kinetics, and high dynamic CO2 capture capacity under simulated flue gas conditions. When combined with the low cost of the coconut-shell precursor, these properties make them exceptionally attractive sorbent candidates for CO2 capture.
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