Effect of the both texture and electrical properties of activated carbon on the CO{sub 2} adsorption capacity

Journal Article · Fri Jan 15 00:00:00 EST 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.08.032· OSTI ID:22584254

Djeridi, W. ^[1]; Ouederni, A. ^[1]; Mansour, N. Ben ^[2]; Llewellyn, P. L. ^[3]; Alyamani, A. ^[2]

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1. Research Laboratory: Engineering Process and Industrial Systems, National school of Engineers of Gabes, University of Gabes, St Omar Ibn Elkhattab, 6029 Gabes (Tunisia)
2. National Nanotechnology Research Centre, KACST, Riyadh (Saudi Arabia)
3. Chimistry laboratory of Provence, University Aix-Marseille I, II, III- CNRS, UMR 6264, Centre de Saint Jerome, 13397 Marseille (France)

Highlights: • A series of activated carbon pellet without binder was prepared by chemical activation. • Carbon dioxide storage isotherm at 30 °C and up to 25 bars was measured for the microporous carbon. • Adsorption enthalpies have been correlated with the carbon dioxide uptake. • Pyrolysis temperature effect on the electrical conductivity of the samples. • Impact of the both texture and electrical properties on CO{sub 2} adsorption capacity have been deducted - Abstract: A series of activated carbon pellets (ACP) based on olive stones were studied for CO{sub 2} storage application. The surface area, pore volume, and pore diameter were evaluated from the analysis of N{sub 2} adsorption isotherm data. The characterization of carbon materials was performed by scanning electron microscopy (SEM), the powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM). The adsorption enthalpies were obtained by microcalorimetry. The effect of pyrolysis temperature on textural, electrical conductivity and gas adsorption capacities of the ACP were investigated by adsorbing CO{sub 2} at 303 K in the pressure range of 0–2.3 MPa. In fact the electrical conductivity is strongly affected by the microporosity of the samples and the size of the micropore. It increases when the pore size decreases which affect the CO{sub 2} adsorption. Also with increases temperature the free electrons concentration on the surface increases which affect the interaction of the adsorbed gas molecules.

• OSTI ID: 22584254
• Journal Information: Materials Research Bulletin, Vol. 73; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACTIVATED CARBON
ADSORPTION
ADSORPTION ISOTHERMS
CALORIMETRY
CARBON DIOXIDE
CHEMICAL ACTIVATION
CONCENTRATION RATIO
ELECTRIC CONDUCTIVITY
ENTHALPY
MICROSTRUCTURE
POROUS MATERIALS
POWDERS
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
TEXTURE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION