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Catalytic graphitization of templated mesoporous carbons

AuthorsSevilla Solís, Marta ; Fuertes Arias, Antonio Benito
KeywordsPorous carbon
Electrical properties
Issue DateMar-2006
CitationCarbon 44(3): 468-474 (2006)
AbstractGraphitic porous carbons with a wide variety of textural properties were obtained by using a silica xerogel as template and a phenolic resin as carbon precursor. The synthetic procedure used to prepare them was as follows: (a) infiltration of the porosity of silica by a solution containing phenolic resin, (b) carbonization of the silica-resin composite, (c) removal of the silica skeleton, (d) impregnation of the templated porous carbon with a metallic salt and (e) catalytic graphitization of the impregnated carbon by heat treatment at 900°C. The graphitization of the carbons thus prepared varies as a function of the carbonization temperature used and the type of metal employed as catalyst (Fe, Ni or Mn). The porous characteristics of these materials change greatly with the temperatures used during the carbonization step. These graphitized carbons exhibit high electrical conductivities up to two orders larger than those obtained for the non-graphitized samples.
Description7 pages, 4 figures.-- Available online on Oct 5, 2005.
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2005.08.019
Appears in Collections:(INCAR) Artículos
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