Design of Porous Carbon Adsorbents from Ethylene Glycol for Selective CO2 Adsorption

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Zaman A. C., Üstündağ C. B.

CHEMISTRYSELECT, cilt.9, ss.1-13, 2024 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1002/slct.202302378
  • Dergi Adı: CHEMISTRYSELECT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier
  • Sayfa Sayıları: ss.1-13
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The production of affordable advanced porous materials is

necessary for applications involving the capture of CO2. This

study aimed to investigate the use of inexpensive liquid

precursors in the production of CO2 sorbents. Porous precursors

were produced through solvothermal processing of ethylene

glycol via dehydration using sulfuric acid. Various pyrolysis and

activation techniques were utilized on a carbon precursor to

examine how different heat treatment methods affect surface

chemical properties and the behavior of static CO2 adsorption

at temperatures of 273 K, 298 K, and 313 K. Out of the studied

carbons, the urea-treated pyrolyzed sample exhibited a CO2

uptake capacity of 0.93 mmolg􀀀 1 at a pressure of 0.15 bar and a

temperature of 298 K. This carbon exhibited a remarkable CO2/

N2 selectivity of 46, mainly due to its microporosity and a

nitrogen content of 8.3 atomic percent. Moreover, the investigation

of adsorption and chemical properties unveiled that

nonoxidized sulfur exhibits favorable effects on CO2 adsorption,

particularly at the temperature of 298 K. This study provides

evidence that liquid precursors can be effectively employed to

generate porous doped functional carbons or precursors using

solvothermal conditions.