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Preparation and Characterization of KOH-Activated Carbons Developed from Petroleum Coke
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  • Journal title : Carbon letters
  • Volume 10, Issue 4,  2009, pp.293-299
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2009.10.4.293
 Title & Authors
Preparation and Characterization of KOH-Activated Carbons Developed from Petroleum Coke
Sayed Ahmed, S.A.; Abo El-Enin, Reham M.M.; El-Nabarawy, Th.;
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 Abstract
Potassium hydroxide activated carbons were prepared from Egyptian petroleum cokes with different KOH/coke ratios and at different activation temperatures and times. The textural properties were determined by adsorption of nitrogen at . The adsorption of iodine and methylene blue was also investigated at . The surface area and the non-micropore volume increased whereas the micropore volume decreased with the increase of the ratio KOH/coke. Also the surface area and porosity increased with the rise of activation temperature from 500 to . Textural parameter considerably increased with the increase of activation time from 1 to 3 h. Further increasing of activation time from 3 to 4 h was associated with a less pronounced increase in textural parameters. The adsorption of iodine shows the same trend of surface area and porosity change exhibited by nitrogen adsorption, with KOH/coke ratio and temperature of activation. Adsorption of methylene blue follows pseudo-first-order kinetics and its equilibrium adsorption follows Langmuir and D-R models.
 Keywords
KOH/coke;Preparation;Characterization;Nitrogen;Methylene blue;Iodine adsorption;
 Language
English
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Influence of Amine Grafting on Carbon Dioxide Adsorption Behaviors of Activated Carbons, Bulletin of the Korean Chemical Society, 2011, 32, 9, 3377  crossref(new windwow)
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