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Structural characterization of carbon xerogels: From film to monolith
Ist Teil von
Microporous and mesoporous materials, 2012-05, Vol.153, p.24-29
Ort / Verlag
San Diego, CA: Elsevier Inc
Erscheinungsjahr
2012
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
[Display omitted]
► Preparation of carbon xerogels with different formats. ► Highly mesoporous materials obtained in pellets avoiding the supercritical drying. ► Microporous films and coatings with high potential as molecular sieves.
Two series of carbon materials obtained by polymerization of resorcinol and formaldehyde catalyzed respectively by Li2CO3 and Cs2CO3 were prepared in different format: aerogel pellets, xerogel pellets of different diameters, films and coatings of ceramic structures. The samples were extensively characterized by different techniques and their porous texture, morphology and mechanical properties were related with the synthesis conditions: polymerization catalyst, drying method and mainly the nature, size and shape of the mold used for the polymerization and cure of the gel. Highly mesoporous materials are obtained in pellets avoiding the supercritical drying, while films and coatings are microporous materials with a high potential as molecular sieves.