Spherical carbons: Synthesis, characterization and activation processes
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http://hdl.handle.net/10045/40172
Títol: | Spherical carbons: Synthesis, characterization and activation processes |
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Autors: | Romero Anaya, Aroldo José | Ouzzine, Mohammed | Lillo-Rodenas, Maria Angeles | Linares-Solano, Angel |
Grups d'investigació o GITE: | Materiales Carbonosos y Medio Ambiente |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Paraules clau: | Spherical carbons | Synthesis | Characterization | Activation processes |
Àrees de coneixement: | Química Inorgánica |
Data de publicació: | de març-2014 |
Editor: | Elsevier |
Citació bibliogràfica: | Carbon. 2014, 68: 296-307. doi:10.1016/j.carbon.2013.11.006 |
Resum: | Spherical carbons have been prepared through hydrothermal treatment of three carbohydrates (glucose, saccharose and cellulose). Preparation variables such as treatment time, treatment temperature and concentration of carbohydrate have been analyzed to obtain spherical carbons. These spherical carbons can be prepared with particle sizes larger than 10 μm, especially from saccharose, and have subsequently been activated using different activation processes (H3PO4, NaOH, KOH or physical activation with CO2) to develop their textural properties. All these spherical carbons maintained their spherical morphology after the activation process, except when KOH/carbon ratios higher than 4/1 were used, which caused partial destruction of the spheres. The spherical activated carbons develop interesting textural properties with the four activating agents employed, reaching surface areas up to 3100 m2/g. Comparison of spherical activated carbons obtained with the different activating agents, taking into account the yields obtained after the activation process, shows that phosphoric acid activation produces spherical activated carbons with higher developed surface areas. Also, the spherical activated carbons present different oxygen groups’ content depending on the activating agent employed (higher surface oxygen groups content for chemical activation than for physical activation). |
Patrocinadors: | The authors thank Generalitat Valenciana (GVPRE/2008/004, Prometeo/2009/047), FEDER and Office of the Vice President for Research, Development and Innovation of University of Alicante (UAUSTI10-08) for financial support. |
URI: | http://hdl.handle.net/10045/40172 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2013.11.006 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.carbon.2013.11.006 |
Apareix a la col·lecció: | INV - MCMA - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2014_Romero_etal_Carbon_final.pdf | Versión final (acceso restringido) | 2,37 MB | Adobe PDF | Obrir Sol·licitar una còpia |
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