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- W2034191906 abstract "Two series of activated carbons have been prepared from date pits; series C, using carbon dioxide as activating agent, and series S, prepared by activation with steam under the same experimental conditions. The obtained samples were oxidized with nitric acid in order to introduce more oxygen surface groups. The surface area and porosity of the parent and oxidized activated carbons were studied by N2 adsorption at 77 K and CO2 adsorption at 273 K. The oxygen surface complexes were characterized by temperature-programmed decomposition (TPD). The results show that carbon dioxide and steam activations produce microporous carbons with an increasing amount of CO evolving groups when increasing the burn-off. On the other hand, oxidation with nitric acid increases the amount of CO and CO2 evolved by the decomposition of surface oxygen groups, this increase being related to the development of porosity in the carbon with the degree of activation and to the activating agent used (CO2 versus steam)." @default.
- W2034191906 created "2016-06-24" @default.
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- W2034191906 date "2009-09-01" @default.
- W2034191906 modified "2023-10-18" @default.
- W2034191906 title "Preparation of activated carbon from date pits: Effect of the activation agent and liquid phase oxidation" @default.
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- W2034191906 doi "https://doi.org/10.1016/j.jaap.2009.05.004" @default.
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