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Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO2 Adsorption.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO2 Adsorption.
Συγγραφείς: Dang Y; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China., Chen Z; School of Automobile and Transportation, Xihua University, Chengdu, China., Zhang C; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China., Han Z; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China., Zuo Z; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China., Liang K; Department of Engineering and Design, University of Sussex, Brighton, UK., Fang J; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; Sichuan Yilan Zhichuang Technology Co., Ltd., Chengdu, China.
Πηγή: Annals of the New York Academy of Sciences [Ann N Y Acad Sci] 2026 Sep; Vol. 1563 (1), pp. e70406.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: New York Academy of Sciences Country of Publication: United States NLM ID: 7506858 Publication Model: Print Cited Medium: Internet ISSN: 1749-6632 (Electronic) Linking ISSN: 00778923 NLM ISO Abbreviation: Ann N Y Acad Sci Subsets: MEDLINE
Imprint Name(s): Publication: 2006- : New York, NY : Malden, MA : New York Academy of Sciences ; Blackwell
Original Publication: New York, The Academy.
Ιατρικοί όροι (MeSH): Zea mays*/chemistry , Carbon Dioxide*/chemistry , Hydroxides*/chemistry , Urea*/chemistry , Potassium Compounds*/chemistry , Carbon*/chemistry, Adsorption
Περίληψη: The rising concentration of greenhouse gases causes severe global warming, creating an urgent need for efficient and low-cost carbon dioxide (CO2) adsorption technologies. Corn stover is an abundant agricultural waste that is often underutilized, leading to resource waste and environmental pollution. To develop value-added utilization of this material, corn stover-derived activated carbon is prepared via urea predoping and controlled potassium hydroxide (KOH) etching, while the effects of pyrolysis temperature, urea doping ratio, KOH dosage, and activation temperature are investigated. Under pure CO2 at 25°C, the optimal adsorbent exhibits an equilibrium CO2 adsorption capacity of 3.57 mmol·g-1. Under pure CO2 at 0°C, the equilibrium capacity increases to 5.91 mmol·g-1, indicating that lower temperature favors CO2 physical adsorption. Under a typical flue gas composition of 20% CO2/80% N2 at 25°C, the adsorbent achieves a CO2 uptake of 1.78 mmol·g-1 after 50 min. The adsorbent exhibits an ideal adsorbed solution theory CO2/N2 selectivity of 30.92. The isosteric heat of adsorption ranges from 28.42 to 23.75 kJ·mol-1. These values suggest predominantly physical adsorption on heterogeneous sites associated with nitrogen functionalities and structural defects. This study offers insights into the design of biomass-derived CO2 adsorbents based on corn stover.
(© 2026 New York Academy of Sciences.)
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Grant Information: 2024ZDZX0042 Sichuan Science and Technology Program
Contributed Indexing: Keywords: adsorption performance; agricultural waste; biomass‐derived activated carbon; carbon dioxide adsorption; corn stover
Substance Nomenclature: 142M471B3J (Carbon Dioxide)
WZH3C48M4T (potassium hydroxide)
0 (Hydroxides)
8W8T17847W (Urea)
0 (Potassium Compounds)
7440-44-0 (Carbon)
Entry Date(s): Date Created: 20260916 Date Completed: 20260916 Latest Revision: 20260918
Update Code: 20260918
PubMed Central ID: PMC13580276
DOI: 10.1111/nyas.70406
PMID: 42747253
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1749-6632
DOI:10.1111/nyas.70406