Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption
文献类型：期刊论文
| 作者 | Ahmed, Rafay1; Liu, Guijian1,2; Yousaf, Balal1,2; Rehman, Abdul1; Munir, Mehr Ahmed Mujtaba1; Irshad, Samina1; Rashid, Muhammad Saqib1; Cheema, Ayesha Imtiyaz1 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 9期号:1页码:14 |
| 关键词 | Chitosan CO2 adsorption Nitrogen modification Chemical activation Isosteric heat of adsorption |
| DOI | 10.1016/j.jece.2020.104646 |
| 通讯作者 | Liu, Guijian(lgj@ustc.edu.cn) |
| 英文摘要 | Porous carbonaceous adsorbents are believed to encourage contenders to CO2 uptake however their high production cost has urged researchers towards cheap renewable. In this study, nitrogen-doped carbonaceous adsorbents with high ultra-microporous structure were synthesized by carbonization and activation of chitosan along with urea and KOH simultaneously at various temperatures (600-900 degrees C). The effects of temperature, urea modification, and chemical activation on nitrogen functionalities and development of porous structure were analyzed. Results showed that porous carbons synthesized with urea and KOH modification at 700 degrees C exhibit the highest CO2 adsorption value (5.92 mmol g(-1) at 0 degrees C and 4.45 mmol g(-1) at 25 degrees C). Enhanced adsorption by NCABC-700 was found due to synergistic effect of nitrogen as well as high specific surface area (1404 m(2) g(-1)) and micropore volume (0.68 cm(3) g(-1)), respectively. Furthermore, best fitting of Freundlich isotherm model explained heterogeneous nature of adsorbent. Isosteric heat of adsorption with a value of 42.2 kJ mol(-1), also indicated the presence of N containing functional groups and a high number of micropores that created a strong interaction between adsorbent and adsorbate, helping in high CO2 uptake. |
| 资助项目 | National Natural Science Foundation of China[41173032] ; Key Program for Science and Technology Development of Anhui Province[1804b06020358] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000615242600007 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province |
| 源URL | [http://ir.ieecas.cn/handle/361006/15964]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Liu, Guijian |
| 作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ahmed, Rafay,Liu, Guijian,Yousaf, Balal,et al. Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(1):14. |
| APA | Ahmed, Rafay.,Liu, Guijian.,Yousaf, Balal.,Rehman, Abdul.,Munir, Mehr Ahmed Mujtaba.,...&Cheema, Ayesha Imtiyaz.(2021).Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(1),14. |
| MLA | Ahmed, Rafay,et al."Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.1(2021):14. |
入库方式： OAI收割
来源：地球环境研究所
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