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Synthesis of a novel porous material comprising carbon/alumina composite aerogels monoliths with high compressive strength
- Source :
-
Microporous & Mesoporous Materials . May2013, Vol. 172, p182-189. 8p. - Publication Year :
- 2013
-
Abstract
- Abstract: Resorcinol–formaldehyde/alumina composite (RF/Al2O3) gels were initially prepared by using sol–gel techniques, and then dried to aerogels with supercritical fluid CO2. After thermal treatment in argon atmosphere, RF/Al2O3 aerogels were successfully converted to monolithic carbon/alumina composite (C/Al2O3) aerogels. The samples were characterized by BET, SEM, TEM and XRD, and the compressive strengths were measured. The experimental results showed that the C/Al2O3 aerogels exhibited an interpenetrating framework with high mesoporosity. The as-synthesized C/Al2O3 aerogels consisted of spherical carbon particles and alumina (fibrous or columnar), which had high BET surface area (576–831m2/g) and showed high compressive strength (5.4–9.1MPa) and Young’s modulus (286.95–476.71MPa). These novel C/Al2O3 aerogels could possibly be used as thermal isolates, catalysts and adsorbents. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 13871811
- Volume :
- 172
- Database :
- Academic Search Index
- Journal :
- Microporous & Mesoporous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 86396181
- Full Text :
- https://doi.org/10.1016/j.micromeso.2013.01.021