Effect of the both texture and electrical properties of activated carbon on the CO 2 adsorption capacity
| Autor: | Ahmed Y. Alyamani, L. El Mir, N. Ben Mansour, W. Djeridi, Abdelmottaleb Ouederni, Philip L. Llewellyn |
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| Přispěvatelé: | NASA Ames Research Center (ARC), College of Sciences, Department of Physics, Al Imam Mohammad Ibn Saud Islamic University (IMSIU) |
| Rok vydání: | 2016 |
| Předmět: |
Isothermal microcalorimetry
Materials science Scanning electron microscope Analytical chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Amorphous materials Adsorption medicine General Materials Science Texture (crystalline) Microstructure Mechanical Engineering Microporous materials [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences High pressure chemistry Mechanics of Materials Transmission electron microscopy Electrical properties 0210 nano-technology Pyrolysis Carbon Activated carbon medicine.drug |
| Zdroj: | Materials Research Bulletin Materials Research Bulletin, Elsevier, 2016, 73 (10), pp.130-139. ⟨10.1016/j.materresbull.2015.08.032⟩ |
| ISSN: | 0025-5408 1873-4227 |
| Popis: | International audience; A series of activated carbon pellets (ACP) based on olive stones were studied for CO2 storage application. The surface area, pore volume, and pore diameter were evaluated from the analysis of N-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 CO2 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 CO2 adsorption. Also with increases temperature the free electrons concentration on the surface increases which affect the interaction of the adsorbed gas molecules |
| Databáze: | OpenAIRE |
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