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- W2000841188 abstract "Small angle neutron scattering treated with the Porod approach has been applied to compare the influence of catalysts (C = NaOH, Na2CO3 and Ca(OH)2) on the porous structure of resorcinol-formaldehyde (RF) carbon aerogels. Investigated parameters are the molar ratio (R/C varies from 10 to 800 mol/mol) and the pyrolysis temperature (1050 °C, 1700 °C and 2600 °C). At 1050 °C, carbon aerogels based on NaOH and Na2CO3 catalysts provide denser materials than with Ca(OH)2-based one, due to a three-dimensional network of smaller particles. The density of particles decreases with the amount of catalyst. At 2600 °C the development of an intraparticle microporosity, which is quantified, leads to a slight decrease of the interparticle mesoporosity noticed at 1050 °C. This effect is induced by a stiffness of carbon layers in polyhedral pore walls as illustrated by the feature of the chords length distribution g(r) and TEM micrographs." @default.
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- W2000841188 date "2007-05-01" @default.
- W2000841188 modified "2023-10-14" @default.
- W2000841188 title "The porous network in carbon aerogels investigated by small angle neutron scattering" @default.
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- W2000841188 doi "https://doi.org/10.1016/j.carbon.2007.02.020" @default.
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