TY  - JOUR
PB  - Elsevier Ltd
SN  - 03062619
Y1  - 2019///
VL  - 255
JF  - Applied Energy
A1  - Singh, G.
A1  - Ismail, I.S.
A1  - Bilen, C.
A1  - Shanbhag, D.
A1  - Sathish, C.I.
A1  - Ramadass, K.
A1  - Vinu, A.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072028102&doi=10.1016%2fj.apenergy.2019.113831&partnerID=40&md5=04c39f1f6849922fb521c1a20018b214
AV  - none
ID  - scholars11057
TI  - A facile synthesis of activated porous carbon spheres from D-glucose using a non-corrosive activating agent for efficient carbon dioxide capture
KW  - Amines; Carbon capture; Carbon dioxide; Carbonization; Corrosion; Gas adsorption; Glucose; Morphology; Physisorption; Porosity; Porous materials; Spheres
KW  -  Carbon dioxide absorption; Carbon dioxide adsorption; CO2 capture; D-glucose; High specific surface area; Isosteric heat of adsorption; Porous carbon spheres; Potassium acetate
KW  -  Potassium compounds
KW  -  acetate; adsorption; amino acid; carbon dioxide; corrosion; energy planning; glucose; heating; porous medium; potassium
N2  - The energy penalties associated with the liquid amines carbon dioxide absorption are huge which could be minimised by using materials based carbon capture adsorption. A facile one-step approach for the preparation of activated porous carbon spheres through direct carbonization of D-glucose with a novel non-corrosive chemical, potassium acetate for carbon dioxide capture is presented here. The amount of potassium acetate is varied to control the chemical structure, morphology, porosity and textural features. The potassium acetate/D-glucose impregnation ratio of 3 is optimum condition for obtaining activated porous carbon spheres with high specific surface area (1917 m2 gâ??1), spherical morphology, and specific pore volume (0.85 cm3 gâ??1). The activated porous carbon spheres prepared using different glucose to potassium acetate ratios are employed as carbon dioxide adsorbents. Among all, activated porous carbon spheres prepared with the potassium acetate/D-glucose of 3 registers the best performance and exhibits carbon dioxide adsorption capacities of 1.96 and 6.62 mmol gâ??1 at 0 °C/0.15 bar and 0 °C/1 bar. It also shows impressive carbon dioxide adsorption at 0 °C/30 bar (20.08 mmol gâ??1) and 25 °C/30 bar (14.08 mmol gâ??1). This performance is attributed to highly developed porous structure of the optimized material. Low isosteric heat of adsorption (24.8â??23.04 kJ molâ??1) means physisorption which suggests lower energy penalties for material regeneration. A non-complicated synthesis and high carbon dioxide capture demonstrate the importance of this work. This synthesis strategy may be utilized to prepare porous carbons from other precursors which could find potential in energy-related applications. © 2019 Elsevier Ltd
N1  - cited By 61
ER  -