IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Understanding the synergy between N-doped ultra-microporous carbonaceous adsorbent and nitrogen functionalities for high performance of CO2 sorption
Ahmed, Rafay1; Liu, Guijian1,2; Yousaf, Balal1,2; Rehman, Abdul1; Munir, Mehr Ahmed Mujtaba1; Irshad, Samina1; Rashid, Muhammad Saqib1; Cheema, Ayesha Imtiyaz1
Corresponding AuthorLiu, Guijian(lgj@ustc.edu.cn)
2021-02-01
Source PublicationJOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume9Issue:1Pages:14
AbstractPorous 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.
KeywordChitosan CO2 adsorption Nitrogen modification Chemical activation Isosteric heat of adsorption
DOI10.1016/j.jece.2020.104646
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41173032] ; Key Program for Science and Technology Development of Anhui Province[1804b06020358]
WOS Research AreaEngineering
Funding OrganizationNational Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000615242600007
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/15965
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu, Guijian
Affiliation1.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
Recommended Citation
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.
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